An???“ 121214 (RAM |
USOO8705768B2
(12) United States Patent
(10) Patent N0.:
(45) Date of Patent:
Aiso et a].
(54)
US 8,705,768 B2
Apr. 22, 2014
FOREIGN PATENT DOCUMENTS
MIXING APPARATUS AND COMPUTER
PROGRAM THEREFOR
JP
(75) Inventors: Masaru Aiso, Hamamatsu (JP);
Masaaki Okabayashi, Hamamatsu (JP);
Takamitsu Aoki, Hamamatsu (JP)
Notice:
4/2004
OTHER PUBLICATIONS
PMl D Digital Audio Mixing System Owners Manual, includes
“Information regarding PMl D System Software V1.41”, “CSDl
Control Surface Reference Manual and Appendices”, Yamaha Cor
(73) Assignee: Yamaha Corporation, Hamamatsu-shi
(J P)
(*)
2004-112162
p0rati0n.*
PMl D Digital Audio Mixing System Owners Manual includes
“information regarding PMl D System Software V1.41”, “CSDl
Control Surface Reference Manual and Appendices”, CSDl Refer
ence Manual ( )Hardware).*
PMl D Digital Audio Mixing System Owner’s Manual includes
“information regarding PMl D System Software V1.41”, “CSDl
Control Surface Reference Manual and Appendices”, CSDl Refer
Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
U.S.C. 154(b) by 1561 days.
(21) App1.No.: 11/494,163
ence Manual (Hardware).*
“Instruction Manual Digital Mixer D-901 Version 3”, Dec. 2004;
Filed:
(22)
Jul. 26, 2006
(65)
TOA Electronics.*
PMlD Digital Audio Mixing System Owner’s Manual, includes
“Information regarding PMlD System Software V1.41”, “CS1D
Prior Publication Data
Control Surface Reference Manual and Appendices”, Yamaha Cor
US 2007/0025568 A1
(30)
poration, Japan.
Feb. 1, 2007
* cited by examiner
Foreign Application Priority Data
Jul. 29, 2005
Primary Examiner * Mohammad Islam
(JP) ............................... .. 2005-222148
Assistant Examiner * David Ton
(74) Attorney, Agent, or Firm * Morrison & Foerster LLP
(51)
Int. Cl.
(52)
H04B 1/00
H03G 3/00
H03G 7/00
US. Cl.
(2006.01)
(2006.01)
(2006.01)
(57)
Digital mixer includes a plurality of input ports each capable
of performing gain adjustment, and a plurality of signal pro
cessing channels. Signal of each of the input ports is allocated
USPC .......................... .. 381/119; 381/104; 381/107
(58)
to one or more desired ones of the channels. Each of the input
channels includes an attenuator and can control the level of
Field of Classi?cation Search
USPC ............ .. 381/119, 1024109, 118, 91; 84/660,
each signal supplied thereto. Gain value of any one of the
84/615, 625; 700/94
See application ?le for complete search history.
(56)
input ports is updated in accordance with the gain adjustment
performed in that input port, and, when an automatic gain
adjustment function is ON in any one of the input channels set
as patched-to destinations of the input port, an attenuator
value of the input channel is automatically adjusted so as to
cancel out an amount of variation of the gain value.
References Cited
U.S. PATENT DOCUMENTS
7,831,054 B2*
11/2010
ABSTRACT
Ball etal. .................... .. 381/104
16 Claims, 4 Drawing Sheets
2005/0249364 A1* 11/2005 Makino etal.
INPUT CHANNEL SCREEN
45
41\
DIGITAL MIXER
7
8
9
%
%
R
\
DISPLAY
42\
4
6
%
r v
VARIOUS
ELECTRIC
LEVEL
PROCESSING
WAVEFORM
OPERATORS
FADERS
METERS
SECTION
VO
(re/{Q
/
(DSP)
.I
(
.
I
I
15
I
I
10
An???“
I 11
,
I
1
)
I
CPU
i
D
1
I
HA
43¥_'\@
44
5
SIGNAL
/ PANQ)
I
.
121214
(RAM
|
2
3
ATT
é SENDO
II
H -YInn
COMP
o
@
o
OHO
E
US. Patent
Apr. 22, 2014
Sheet 1 0f4
US 8,705,768 B2
A
DIGITAL MIXER
6
7
L1
8
L1
DISPLAY
\
S
18
\
5
QM
\ v v
VARIOUS
ELECTRIC
LEVEL
‘
PROCESSING
> WAVEFORM
OPERATORS
FADERS
METERS
‘
SECTION
I
I
‘
4
9
I
I
I
] ET}:5RC:‘ET
10
I ,)
I
I
FLASH
CPU
11
I/O
I
I
I CIT/HgR
:
(DSP)
MEMORY
7
RAM
/
/
/
1
2
3
F I G.
1
i
I: C]
DG
[:1 Cl
DISPLAY
III III
13a
SGENENO.
DISPLAY
13b
13
1
GE
1 3d
130
CI :1
[:1 {:1
12
18a
/
14V
1
1 8b
[O O G
5v
SEL
—|_AYER
2 1 8C
1 6 v
CH1
1ST—12TH INPUT
HANNELS >
13TH—24TH INPUT
CHANNELS
A
L/
Lil—$15???”
OUTPUT CHANNEL
G
I
I I -
GUI:
PI (3.2
US. Patent
Apr. 22, 2014
20
?
Sheet 2 0f4
24
US 8,705,768 B2
25
28
23
26
INPUT
ST OUTPUT
'
I
a,
(24ch)
L;
L
s0.
2
E
D
INPUT
I
0
> CHANNELS
g
g1
OUTPUT
CHANNEL
INPUT
,9
29
\
27
g
\
i’,_
MIX OUTPUT
‘ CHANNELS
‘ 8
7
'
(80h)
>
38
D
' OUTPUT
ANALOG INPUT PORT
200
—
ADC
x
202
201
F I G.
3 B
24
INPUT CHANNEL
FROM
—-—-
Att
EQ
\
Comp
\
W
LVI
32
33
34
CH_ON
TO_ST
3
36
PAN
?
38 395 40
Jig—N
pp SND_|_ SND_ON
Vol(i)
ONG)
Pre(i_j) SL(iJ) SON(iJ)
INPUT CHANNEL i
FIG.
3C
25
§T
@IX
BUS
BUS
US. Patent
Apr. 22, 2014
US 8,705,768 B2
Sheet 3 0f 4
INPUT CHANNEL SCREEN
41
42\
| CH5 | [TQM
'
C)
43 \_ H_A I?l‘il Ag SEND
44 \56
6 9 H
46/1?
\“I I!
6)
6)
V
1CPMP
Q Q %
U
Q) Q)
PI G.4
HA GAIN MANIPULATION
OF INPUT PORT k
ATTENUATOR OPERATION
OF INPUT CHANNEL i
UPDATE IPG(k) IN CURRENT
MEMORY IN ACCORD. WITH
OPERATION AMOUNT
I
$81
UPDATE AT(i) IN
CURRENT MEMORY IN
ACCORD. WITH
OPERATION AMOUNT
PATCHED—TO
no
V
DESTINATION (INPUT
(END)
HANNEL) °
yes
FIG.
i 4—NO. OF PATCH-TO INPUT CHANNEIJ~A83
r
no
GAG):
S4
yes
UPDATE AT(i) OF INPUT
CHANNEL i IN ACCORD. WITH
VARIATION AMOUNT OF IPG(k)
mss
$88
US. Patent
Apr. 22, 2014
Sheet 4 0f4
US 8,705,768 B2
SCENE S RECALL
OPERATION
s1 0 \ READ OUT OPERATION
DATA OF DESIGNATED
SCENE s
LOCK CURRENT
$1 1
S12
MEMORY
ANY PATCH
LINK ?
yes
$1 3 '\~ COPY LINKED PATCH DATA
A
V
S14N
COPY AGA OF EACH INPUT
CHANNEL
T
COPY IPG NOT SET AS NON—RECALL
$1 5\ OBJECT (“RECALL-SAFE OBJECT") &
PERFORM AGA PROCESS
s16 \ COPY AT NOT SET AS
NON—RECALL OBJECT
V
COPY OTHER
S1 7 x OPERATION DATA NOT
SET AS NON—RECALL
OBJECT
V
UNLOCK CURRENT
S1 8 X
MEMORY
FIG.
6
US 8,705,768 B2
1
2
MIXING APPARATUS AND COMPUTER
PROGRAM THEREFOR
connected to) the analog input port, namely, signals that are
supplied via the patched-to input channels to the mixing
buses, would vary in level, which thereby undesirably in?u
BACKGROUND OF THE INVENTION
ences a mixing level ratio among the signals.
At an input stage of each of the input channels, there is
The present invention relates to mixing apparatus which
mix audio signals, and computer programs for the mixing
provided a level control mechanism called “attenuator”
which attenuates or ampli?es the level of the audio signal
apparatus.
input to the channel in question. This attenuator is provided to
As well known, audio mixers are mixing apparatus which
include a predetermined plurality of mixing buses and which
mix a plurality of audio signals, via the mixing buses, at
desired tone volume levels. Digital mixers are mixing appa
appropriately adjust the level of the audio signal, input to the
channel, with effects of an equalizer etc., provided at subse
quent stages, taken into consideration.
When gain adjustment has been performed in the analog
ratus which perform mixing processing and other necessary
input port and if the attenuator of a given patched-to input
channel connected with the analog input port is adjusted to
cancel out level variation having occurred due to the gain
adjustment, the signal mixing ratio can be prevented from
processing, such as effect impartment, through digital signal
processing. In such digital mixers, audio signals, such as tone
signals and digital audio signals, input via a plurality of input
ports, are allocated and supplied to desired one or ones of a
changing. However, the conventionally-known mixing appa
plurality of input channels. Each of the input channels adjusts
ratus are not constructed with interlocked relation between
characteristics and level of the signal allocated thereto and
then supplies the thus adjusted signal to desired mixing buses.
Each of the mixing buses mixes a plurality of the digital
signals supplied from the input channels and supplies the
resultant mixed signals to corresponding output channels.
the gain adjustment of the input ports and the adjustment of
20
through manual operation by users. Speaking of possible
arrangements for interlocking the gain adjustment of a given
Each of the output channels adjusts characteristics and level
of the supplied signal and then outputs the thus-adjusted
signal to the outside of the mixer. Among examples of digital
the attenuators of the input channels taken into consideration;
to date, it has been conventional to perform such adjustment
input port and the adjustment of the attenuator of a corre
25
sponding patched-to input channel to each other, the input
mixers of the above-discussed type is a digital mixer mar
ports and the input channels may be connected with each
other in desired combinations and any of the input ports may
keted by the assignee of the instant application under the
product name “PMlD” (see, for example, http://
be connected to two or more patched-to input channels. How
www.2.yamaha.co.jp/manual/pdf/pa/japan/mixers/
30
PMl D_Manager].pdf).
In this speci?cation, allocating signals of input ports to
input channels or allocating output signals of output channels
to output ports will be referred to as “patch” or “patching”,
and setting data of such patching will be referred to as “patch
data”. Allocation (or patching) of the signals from the input
ports to the input channels is performed by an “input patch”
section, while allocation (or patching) of the signals from the
output channels to the output ports is performed by an “output
patch” section.
ments for merely interlocking the gain adjustment of a given
35
converter into a digital audio signal. Then, the thus-converted
40
ing in a corresponding patched-to input channel and in?uenc
ing a mixing ratio of signals supplied from individual input
45
In order to accomplish the above-mentioned object, the
50
that allocates the audio signal, supplied from said input port,
ther, the digital input port, which may comprise a digital
55
to one or more desired ones of said plurality of channels; an
automatic adjustment section that, in accordance with the
gain adjustment in the input port, automatically adjusts level
control to be performed by the level control section in each of
the channels, having the audio signal of the input port allo
60
cated thereto, in a direction to cancel out level variation hav
ing occurred due to the gain adjustment in the input port; and
to an optimal gain level that can reliably prevent the A/D
converted digital signal from assuming too small a level and
prevent signal clipping from occurring due to an excessive
a setting section that, for each of the channels, sets an
ON/OFF state of an automatic adjustment function of the
automatic adjustment section independently of the other
input to the A/D converter or excessive gain of the A/D con
patched-to destinations of (i.e., patched-to input channels
which comprises: an input port that inputs an audio signal,
adjusts a gain of the inputted audio signal and supplies the
audio signal of the adjusted gain in digital representation; a
plurality of channels that process signals, each of the channels
including a level control section that controls an input level of
an audio signal allocated to the channel; an allocation section
one or more input channels that are patched-to destinations of
verter. However, if the gain of the analog input port is
adjusted, signals to be processed in input channels that are
channels to a mixing bus.
present invention provides an improved mixing apparatus,
the analog input port (i.e., “patched-to input channels”). Fur
mark) or mLAN (trademark), is capable of inputting a plu
rality of digital audio signals by means of a single cable.
Via a gain control mechanism provided in the analog input
port, the user is allowed to adjust the input analog audio signal
In view of the foregoing, it is an object of the present
invention to provide an improved digital mixer which, even
when gain adjustment of an input port has been made, can
prevent the gain adjustment from in?uencing signal process
digital audio signal is supplied via the input patch section to
audio I/O based on the AES/EBU, ADAT, TDIF or other
standard or an audio network I/O like the Cobranet (trade
input port and the adjustment of the attenuator of a corre
sponding input channel to each other alone are not suf?cient.
SUMMARY OF THE INVENTION
Generally, the digital mixers, such as the one marketed
under the product name “PMlD” mentioned above, are pro
vided with a plurality of input ports including analog input
ports each for inputting an analog audio signal and digital
input ports each for inputting a digital audio signal.
The analog input port is provided with a gain-variable
ampli?er and A/ D converter. Analog audio signal input to the
analog input port is appropriately adjusted in amplitude level
by the gain-variable ampli?er and then converted via the A/D
ever, that the gain of a given input port is adjusted in accor
dance with adjustment of the attenuator of a given patched-to
input channel is practically unreasonable in view of the
intended purpose of the attenuator. Therefore, the arrange
65
channels.
According to the present invention, which is provided with
the automatic adjustment section, the level control to be per
US 8,705,768 B2
3
4
formed by the level control section for each of the channels, to
which the audio signal of the input port has been allocated,
FIG. 6 is a ?ow chart showing an example operational
sequence of scene recall processing performed in the embodi
can be automatically adjusted in a direction to cancel out level
ment.
variation having occurred due to the gain adjustment in the
input port, and the ON/OFF state of the automatic adjustment
function can be set by the ON/OFF setting section indepen
dently for each of the channels. Because the automatic adjust
ment function is performed, by the automatic adjustment
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an example hardware
setup of a digital mixer in accordance with an embodiment of
the present invention. The digital mixer of FIG. 1 comprises a
CPU 101, a ?ash memory 2, a RAM 3, a signal processing
section, in the channel selected or set as a destination of the
signal (i.e., “destination channel”), the gain adjustment of the
circuit (DSP) 4, a waveform input/ output interface (I/O) unit
(hereinafter “waveform I/O unit”) 5, a display device 6, vari
input port is not varied when the level control operator has
been operated in the destination channel. Namely, the auto
matic adjustment function serves to ?x the signal, to be used
for signal processing in each of the channel, at a given con
ous operators 7, electric faders 8, level meters 9, an Ethernet
interface (I/O) 10, and another interface (“other I/ O”) 11. The
above-mentioned components are connected with one
stant level irrespective of the gain adjustment performed in
the corresponding input port whose audio signal has been
allocated to the channel. Even when the gain of a given input
port has been adjusted, each of the channels, to which the
audio signal has been allocated, can perform signal process
another via a bus 1B. Microcomputer, comprising the CPU 1,
?ash memory 2 and RAM 3, executes control programs
stored in the ?ash memory 2 or RAM 3 to control the general
behavior of the mixer. The DSP 4, which is an engine for
20
ing without being in?uenced by level variation resulting from
the gain adjustment in the input port. Thus, the mixing appa
ratus of the present invention can achieve the superior bene?t
that a mixing ratio among signals of the individual channels
can be prevented from being in?uenced even when the gain of
signal processing on digital audio signals, supplied via the
waveform I/O unit 5, on the basis of an instruction given from
the CPU 1 and then outputs the resultant processed signals to
the outside of the digital mixer. The display device 6, various
25
operators 7, electric faders 8 and level meters 9 are user
interfaces provided on an operation panel of the digital mixer.
the input port has been adjusted.
The user can use the various operators 7 and electric faders 8
The present invention may be constructed and imple
mented not only as the apparatus invention as discussed above
but also as a method invention. Also, the present invention
may be arranged and implemented as a software program for
performing digital signal processing of the mixer, performs
to perform various instructing operation pertaining to mixing
processing, i.e. operation for setting various parameters and
30
instructing activation of various functions. Further, the elec
tric faders 8 each have a motor built therein for automatically
execution by a processor such as a computer or DSP, as well
as a storage medium storing such a software program. Fur
controlling an operational position of the fader 8; via the
ther, the processor used in the present invention may comprise
a dedicated processor with dedicated logic built in hardware,
motor, the operational position of a knob of the electric fader
8 is automatically controlled on the basis of a drive signal
not to mention a computer or other general-purpose type
35
thus, using GUIs on the display screens, the user is allowed to
make settings of the entire mixer and set parameters for the
various functions. The level meters 9 are devices for display
tion is not limited to the described embodiments and various
modi?cations of the invention are possible without departing
from the basic principles. The scope of the present invention
is therefore to be determined solely by the appended claims.
given from the CPU 1. Further, the user can call a display
screen corresponding to a desired one of various functions;
processor capable of running a desired software program.
The following will describe embodiments of the present
invention, but it should be appreciated that the present inven
40
ing levels of predetermined parameters (such as tone volume
and degree of effectiveness of effecters) of an audio signal
supplied to the DSP 4.
The waveform I/ O unit 5 includes various interfaces for an
analog input, analog output, digital input and digital output.
BRIEF DESCRIPTION OF THE DRAWINGS
45
For better understanding of the objects and other features
of the present invention, its preferred embodiments will be
described hereinbelow in greater detail with reference to the
accompanying drawings, in which:
FIG. 1 is a block diagram showing an example hardware
setup of a digital mixer in accordance with an embodiment of
50
waveform I/O unit 5.
The digital mixer of FIG. 1 may also be connected to a
LAN network via the Ethernet I/ O 10. Other computer in the
the present invention;
FIG. 2 is a diagram showing an external appearance of a
primary part of an operation panel of the digital mixer of FIG.
1;
55
behavior of the digital mixer of FIG. 1 to be remote-controlled
via external equipment. Further, the other computer in the
60
FIG. 4 is a diagram showing an example of a screen dis
played on a display device in the embodiment;
FIG. 5A is a ?ow chart of auto gain adjuster processing
performed in the embodiment in response to head ampli?er
(HA) gain adjusting operation, and FIG. 5B is a ?ow chart of
showing an example operational sequence of processing car
ried out in response to operation of an attenuator; and
LAN network can execute a software program, designed for
remote-controlling the digital mixer, to allow the general
FIG. 3A is a block diagram outlining signal processing
arrangements in the embodiment, FIG. 3B is a diagram show
ing a detailed construction of an analog input port in the
embodiment, and FIG. 3C is a diagram showing an example
construction of an input channel in the embodiment;
Analog audio signal input via the I/ O unit 5 is converted into
a digital audio signal and then supplied to the DSP 4. The
digital audio signal output from the DSP 4 is converted via the
I/ O unit 5 into an analog audio signal, and the converted
analog audio signal is output to the outside of the digital
mixer. Further, the digital mixer can communicate digital
signals with audio equipment, connected thereto, via the
LAN network can also display operating conditions etc. of the
digital mixer on its display device. Note that the digital mixer
of FIG. 1 may be provided with any other interfaces (e.g.,
other I/O 11) than the above-described.
In the ?ash memory 2 or RAM 3, there is provided a current
memory area for recording current settings of the digital
65
mixer. Data recorded in the current memory area are various
operation data set by the user for the mixing processing, such
as settings of parameters for use in signal processing to be
US 8,705,768 B2
5
6
performed by the DSP 4. In other words, the DSP 4 performs
the signal processing on the basis of the operation data (such
ber as a subject of store or recall. The scene recall switch
as settings of parameters) stored in the current memory area.
As any one of the parameter settings etc. is changed, the data
in the current memory area, corresponding to the changed
memory area, the scene data set corresponding to the number
selected via the selection switch 13d, so as to recall the scene.
(RECALL) 130 is operable to read out, from the scene
Further, the scene store switch (“STORE”) 13b is operable to
parameter or the like, is updated in accordance with the
store the current parameter settings (i.e., “current scene”) of
change (e. g., amount of operation), and the updated result is
re?ected in the signal processing by the DSP 4.
the digital mixer as scene data of the number selected via the
The ?ash memory 2 includes a “scene memory area”,
where are set a plurality of sets of scene data comprising
Further, on the operation panel of FIG. 2, there are pro
vided various other operators 19, such as ON/OFF switches
various kinds of operation data corresponding to given set
tings (such as settings of various parameters). The user can
of various functions, rotary encoders, increment and decre
ment switches, cursor keys and enter key (decision key).
store current settings of the digital mixer into the scene
Using these operators 19, the user can control various opera
tion interfaces on a screen, displayed on the display device 6,
scene selection switch 13d.
memory area as scene data. The user can also read out a
desired scene data set from the scene memory area so as to
to perform various operation, such as parameter setting
operation.
replace the current settings of the digital mixer with the read
out scene data set and thereby automatically reproduce (or
recall) given mixing-related settings (i.e., scene).
FIG. 2 is a diagram showing an external appearance of a
primary part of the operation panel (mixing console) of the
20
digital mixer of FIG. 1. On the operation panel, as shown in
FIG. 2, there are provided the display device 6, channel strip
FIG. 3A is a block diagram outlining example arrange
ments for the signal processing performed by the DSP 4 in the
instant embodiment of the digital mixer. As shown, the digital
mixer includes a plurality of analog input ports (A inputs) 20
for inputting analog audio signals, and a plurality of digital
input ports (D inputs) 21 for inputting digital audio signals.
section 12, scene memory control section 13, etc. Various
FIG. 3B shows a detailed construction of one of the analog
operators (such as switches) shown in FIG. 2 correspond to
the various operators 7 shown in FIG. 1.
The channel strip section 12 comprises a plurality of chan
nel strips CH. Let it be assumed here that the channel strip
input ports 20. As shown in FIG. 3B, each of the analog input
ports 20, which receives an externally-supplied analog audio
signal (input via a microphone or signal line), includes a head
25
ampli?er 200 for amplifying the input analog audio signal,
gain adjuster 201 for adjusting a gain of the head ampli?er
section 12 in the instant embodiment comprises a total of
200 and an A/D converter (ADC) 202 for converting the
twelve channel strips CH1, CH2, CH3, . . . . Each of the
channel strips CH includes: operators for adjusting charac
teristics and level of a digital signal input to the channel
assigned to that channel strip CH, such as the electric fader 8
and knob-type operator 14 for adjusting the level of the sig
nal; a SEL switch 15 for giving an instruction for setting up
the assigned channel in a not-shown selected channel section
30
trolled as necessary by the gain adjuster 201 adjusting the
gain of the head ampli?er 200. Such gain adjustment is per
35
(i.e., module for deploying functions of the assigned channel
in detail) and giving an instruction for pairing the assigned
channel with another one of the channels; an ON switch 16 for
setting an ON/OFF state of the assigned channel; a CUE
switch 17 for setting an ON/OFF state of a CUE function (i.e.,
function for monitoring a tone of a selected channel); and
40
other operators.
formed to adapt the input signal level to a level range accept
able by the A/D converter 202. Further, each of the digital
input ports 21, which receives a digital audio signal, com
prises a suitable digital I/O.
Input patch section 22 is a module that selects any one of
the analog or digital input ports 20 or 21 for each of the
predetermined plurality of (twenty-four in the instant
embodiment) input channels and interconnects the selected
input port and the input channel. Via this input patch section
22, the user allocates the signal of each of the input ports to
any of the input channels. Data indicative of the connections
The user can use channel any one of assignment switches
18a, 18b and 180 to assign desired input channels or output
channels to the channel strips CH of the channel strip section
12. Let it be assumed here that the digital mixer according to
output of the head ampli?er 200. In the analog input port 20,
the signal input level to the A/D converter 202 can be con
45
in the input patch section 22 between the individual input
channels and the input ports are stored as “patch data” in a
the instant embodiment is provided with twenty-four input
suitable memory, such as the ?ash memory 2 or RAM 3. Note
channels, eight output channels and one stereo output channel
(hereinafter “ST output channel”). More speci?cally, the user
can assign the ?rst to eighth output channels and one ST
output channel to nine of the channel strips CH via the chan
that the signal of the same input port may be allocated to two
or more of the input channels.
50
channel to adjust characteristics and level of the digital signal
supplied to the input channel. Signal output from each of the
nel assignment switch 1811 (“MASTER 1”), assign the ?rst to
twelfth input channels to the twelve channel strips CH via the
channel assignment switch 18b (“LAYER 1”), and assign the
thirteenth to twenty-fourth input channels to the twelve chan
nel strips CH via the channel assignment switch 180
The twenty-four input channels 23 each perform signal
processing on the basis of various parameters set for the input
input channels is sent to desired one or more of a predeter
55
mined plurality of mixing buses (MIX buses); in the illus
trated example, there are provided one stereo bus (ST bus) 24
(“LAYER 2”).
and eight mixing (MIX) buses 25. Signals output from the
As further seen in FIG. 2, the scene memory control section
13 includes a scene number display section 13a, scene store
input channels to any of the ST bus 24 and mixing buses 25 are
switch (“STORE”) 13b, scene recall switch (RECALL) 13c,
and scene selection switch (“UP” and “DOWN”) 13d. Unique
60
are supplied to the output channels corresponding to the bus.
In the illustrated example, the output channels consist of one
ST output channel 26 corresponding to the ST bus 24 and
number of a scene data set selected by the user as a subject of
store or recall is displayed on a scene number display section
1311. The scene selection switch (“UP” and “DOWN”) 13d is
operable to increase or decrease the number to be displayed
on the scene number display section 1311, and the user can use
the scene selection switch 13d to select a desired scene num
subjected to the mixing processing performed by the bus 24 or
25 at a mixing ratio corresponding to respective signal output
levels of the input channels, and the resultant mixed signals
65
eight output channels 27 corresponding to the eight mixing
buses 25. Each of the ST output channel 26 and eight output
channels 27 performs signal processing on the basis of vari
US 8,705,768 B2
7
8
ous parameters, set for the output channel, to adjust charac
a send-ON parameter SON(ij), a send-ON/OFF switch (“SN
teristics and level of the digital signal supplied thereto.
D_ON”) 40 is provided for switching between send ON and
OFF states of the signal to be sent to the mixing bus 25. Signal
Output patch section 28 is a module that selects any one of
send (or delivery) paths following the pre/post switch (“PP”)
the output channels (ST output channel 26 and output chan
nels 27) for each of analog or digital output ports (A output
38 are provided in corresponding relation to the plurality of
(eight in this case) MIX buses 25, and the user is allowed to set
the pre/post switch 38, send level setter 39 and send-ON/OFF
switch 40 independently for each of the MIX buses. “j” in the
ports or D output ports) 29 or 30 and interconnects the
selected output channel and the output port that is a patched
to destination of the signal of the output channel. Via this
output patch section 28, the output signal of each of the output
above-mentioned parameters Pre(ij), SL(ij) and SON(ij) indi
channels is allocated and supplied to any one of the output
ports 29 and 30.
cates a speci?c bus number of the MIX bus 25 that is a sent-to
destination of the signal.
Thus, each of the digital audio signals output from the ST
FIG. 4 shows an example of a screen displayed on the
output channel 26 and output channels 27 is allocated via the
output patch section 28 to any one of the output ports 29 or 30.
display device 6 shown in FIG. 2; more particular, FIG. 4
shows an “input channel screen” for setting parameters for a
given one of the input channels. In the ?gure, a character
string “CH5” indicated in an upper region of the input channel
screen indicates that the ?fth input channel has been called to
the screen. “SEL” indicated to the left of the character string
Each of the analog output ports 29 converts the thus-supplied
digital audio signal into analog representation and thereby
outputs an analog audio signal. Each of the digital output
ports 30 comprises a suitable digital I/O and outputs a digital
audio signal.
FIG. 3C is a diagram showing an example of a construction
“CH5” is a button for deploying a window for selecting a
20
for signal processing in each of the input channels 23 of FIG.
3A. More speci?cally, in FIG. 3C, the signal processing con
struction for a given one of the input channels (the given input
channel is indicated by reference character “i” for conve
nience of description). In the input channel i, there are pro
cause a desired one of the predetermined plurality of (twenty
four in the instant embodiment) to be called to the screen. On
the input channel screen, there are displayed various opera
25
tion interfaces (e.g., images of buttons, knob-type operators,
faders, etc.) for setting parameters of various signal process
ing modules explained above with reference to FIG. 3. In the
?gure, ON/OFF states of the switches corresponding to the
button images are indicated by the line thicknesses of the
vided, from the input stage of the input channel, a plurality of
signal processing modules, i.e. an attenuator (ATT) 31, equal
izer (EQ) 32, compressor (Comp) 33 and tone volume fader
button images.
(Vol) 34 in the order mentioned. The attenuator 31 is a level
control mechanism for attenuating or amplifying the level of
channel number to be called to the screen, and the user can
30
the digital audio signal, allocated via the input patch section
Head ampli?er section HA indicated immediately below
the “SEL” button corresponds to the head ampli?er 200 (see
22 to the input channel i, on the basis of an attenuator param
FIG. 3B) of the analog input port 20 (see FIG. 3A) connected
eter setting AT(i) of the input channel. The attenuator 31 is
via the input patch section to the input channel in question,
provided for appropriately adjusting the level of the signal,
supplied to the input channel, with effects of the equalizer 32
and the number “Ain14” of the input port that is an input
35
attenuator 31 on the basis of an equalizing parameter setting
of the input channel, and the compressor 33 imparts a com
pressor effect to the output of the equalizer 32 on the basis of
a compressor setting of the input channel. The tone volume
fader 34 controls the tone volume level of the signal, allocated
to the input channel, on the basis of a tone volume parameter
on a level meter 43. Further, a phase inversion button 44 is a
40
switch for switching between ON/OFF states of a phase inver
sion function of the input signal.
Attenuator section ATT corresponds to the attenuator 31 of
FIG. 3C, and the user is allowed to use a knob image 45 to set
Vol(i) of the input channel. Channel ON/OFF switch
(“CH_ON”) 35 switches between ON/OFF states of the out
put signal of the tone volume fader 34 on the basis of an
source of the channel is displayed in a box 41 located to the
right of the section “HA”. Gain adjusting knob image 42
corresponds to the gain adjuster 201 of FIG. 3B. Level of the
head ampli?er HA (before the A/D conversion) is displayed
etc., provided at subsequent stages, taken into account.
The equalizer 32 performs equalizing on the output of the
an attenuator value AT(i) of the input channel to thereby
45
control the input level of the signal patched to the input level.
In the attenuator section ATT, there is provided an “AGA”
button 46. The “AGA” button 46 is provided for switching
ON/OFF parameter ON(i) of the input channel, and the ON
switch 16 of FIG. 2 corresponds to this channel ON/OFF
between ON/OFF states of an “auto gain adjuster function” to
switch 35. TO_ST switch 36 is provided for switching
between output ON and OFF states of the signal of the input
channel i to be output to the stereo bus (ST bus) 24. The signal
be performed in the instant embodiment. The “auto gain
adjuster function” (AGA function) is a function which, when
gain adjustment has been performed on the head ampli?er
HA of any one of the analog input port, automatically adjusts
the setting of the attenuator section ATT of the input channel,
50
output from the input channel i to the stereo bus 24 is appro
priately distributed, via a panning control section (“PAN”)
37, to left and right bus lines of the stereo bus 24 on the basis
of a panning parameter setting.
On the basis of a pre/post switch parameter Pre(ij), a pre/
post switch (“PP”) 38 switches between a signal before being
processed by the tone volume fader 34 (i.e., pre-fader signal)
and a signal after having been processed by the tone volume
fader 34 (i.e., post-fader signal), so that one of the pre-fader
and post-fader signals thus selected via the pre/post switch 38
is sent to the mixing bus 25. In FIG. 3C, the pre/post switch 38
is shown as being in a post-fader-signal selecting position so
that the post-fader signal can be sent to the mixing bus 25.
Send (or delivery) level setter (“SEND_L”) 39 sets a send
level of the signal to be sent to the mixing bus 25 in accor
dance with a send level parameter SL(ij). In accordance with
55
60
65
which is a patched-to destination of the input port, in a direc
tion to cancel out level variation having occurred due to the
gain adjustment. Even when the gain of the head ampli?er HA
has been adjusted, the “auto gain adjuster function” allows
level variation, resulting from the gain adjustment, to be
canceled out at the input stage (attenuator) in the input chan
nel which is a patched-to destination of the input port (i.e.,
patched-to input channel), so that signal processing per
formed at subsequent stages can be prevented from being
in?uenced by the gain adjustment performed on the head
ampli?er HA of the input port. Thus, the mixing ratio of
signals of the input channels in the ST or MIX bus 24 o 25 can
be prevented from changing. Details of the “auto gain adjuster
function” will be described later.
US 8,705,768 B2
10
corresponding to the HA gain manipulation is re?ected in the
signal processing by the DSP 4. At step S2, a determination is
Further, an equalizer section EQ corresponding to the
equalizer 32 of FIG. 3C and compressor section COMP cor
responding to the compressor 33 of FIG. 3C each include a
made as to whether any of the input channels has been set as
switch for switching between ON/OFF states of that effecter
(function), level meter indicating an output level or a degree
of effectiveness of the effecter, and a graph display for show
ing a characteristic of the effecter. Once the characteristic
graph of any one of the section EQ and section COMP is
a patched-to destination for the input port k. If no such
patched-to destination has been set (NO determination at step
S2), the instant processing is brought to an end. Note that two
or more of the input channels may have been designated as
patched-to destinations for a given input port k (however,
clicked on, a detailed setting screen of the section EQ or
only one input port, not two or more input ports, can be
connected with one input channel). If one or more of the input
COMP is deployed. In a mix send section SEND, send func
tion setting tools corresponding to the plurality of (eight in
this case) MIX buses are displayed, and, for each of the send,
there are provided a knob image for send level adjustment
(send level setter (SEND_L) 39 of FIG. 3C), pre/post switch
ing button (pre/post switch (PP) 38 of FIG. 3C) and send
ON/OFF switching button (corresponding to the send-ON/
OFF switching button (SND_ON) 40 of FIG. 3C). Further, in
a panning section PAN corresponding to the panning control
section (PAN) 37 of FIG. 3C, there is displayed a knob image
for panning parameter setting. To the right of the panning
section PAN, there is displayed a TO_ST button image (cor
channels have been set as patched-to destinations for the input
port k (YES determination at step S2), operations of steps
S4-S6 are performed on each of the input channels currently
set as patched-to destinations, as will be described below.
At next step S3, the channel number of each of the input
channels set as patched-to destinations is set as a channel
variable (i) on the basis of the patch data of the input port k. In
the case where two or more of the input channels have been
20
set as patched-to destinations, the channel numbers of these
input channels are set as channel variables (i), for example, in
responding to the TO_ST switch 36 of FIG. 3C) for switching
the order of increasing channel numbers. At step S4, the
between output ON and OFF states of a signal to be output to
ON/OFF setting parameter AGA(i) of the “auto gain adjuster
the stereo bus 24. Further, a fader operator image, displayed
in a right-end region of the screen, corresponds to the tone
volume fader 34 of FIG. 3C and operable to adjust the tone
25
volume parameterVol(i) of the input channel. Displayed posi
tion of the fader operator image varies in response to (i.e., in
interlocked relation to) the physical operator (electric fader 8)
of the channel strip to which the input channel in question is
currently assigned. Tone volume level of the output signal of
the fader 34 of the input channel is displayed on a level meter
located immediately above the fader operator image. Position
at which the tone volume level to be displayed is detected may
be selected by the user from among a position preceding or
30
35
amount of the value IPG(k) mentioned above in relation to
step S1). The updating of the attenuator parameter value AT(i)
serves to vary the parameter value in a direction to cancel out
40
and so on. If two or more input channels have been set as
45
50
description will be given about the auto gain adjuster function
(AGA function) performed in the instant embodiment. FIG.
5A shows an example operational sequence of processing
55
HA gain.
60
indicated by “k”). Let it be assumed here that a given input
channel i has been selected as a patched-to destination of the
input port k.
updated in accordance with an amount of the manipulation or
operation performed by the user. Thus, the gain adjustment
Through the aforementioned operations, the attenuator
parameter setting of each of the input channels, which have
been selected as patched-to destinations for a given input port
k and where the AGA function is currently ON, is automati
cally adjusted in accordance with a variation amount of the
ment on the input channel screen of FIG. 4, operation of the
corresponding physical operator, or the like) of any one of the
Once the HA gain is manipulated, the HA gain value IPG
(k) of the input port k, stored in the current memory area, is
determination is made, on the basis of the value of the channel
variable (i), as to whether any input channel designated as the
patched-to destination remains to be processed. With a YES
determination at step S7, the processing reverts to step S4, so
that the operations of steps S4-S6 are performed on the des
ignated input channel remaining to be processed.
lation of the head ampli?er gain (hereinafter “HA gain”) (e. g.,
operation of the knob image 42 for head ampli?er gain adjust
analog input port 20 (hereinafter, this analog input port will be
is set as the channel variable (i), at step S6. If the AGA
function is currently set in the OFF state (NO determination at
step S4), the processing jumps to step S6. Then, at step S7, a
head ampli?ers HA of the input ports in association with the
carried out in the instant embodiment in response to manipu
the variation amount of the corresponding value IPG(k). Spe
ci?cally, if the corresponding value IPG(k) has been
increased by “1 dB”, the value AT(i) is decreased by “1 dB”,
patched-to destinations, the number of the next input channel
device 6. Examples of the other display screens include a
screen showing a list of modules for adjusting the gains of the
patched-to input channels, a screen showing a list of modules
for adjusting the attenuators of the individual input channels.
Next, with reference to ?ow charts of FIGS. 5A and 5B, a
current memory area is updated, at step S5, in accordance
with a variation amount of the HA gain value IPG(k) of the
input port k connected with the input channel i (i.e., variation
CUE switch 17 of FIG. 2.
Note that, in addition to the “input channel screen” of FIG.
4, various other display screens, corresponding to various
functions of the digital mixer, can be displayed on the display
“AGA” button 46 of the attenuator section ATT on the input
channel screen of FIG. 4. If the AGA function is currently set
in the ON state (YES determination at step S4), the attenuator
parameter value AT(i) of the input channel i stored in the
following the tone volume fader 34, position preceding the
equalizer (EQ) 32, etc. Further, immediately below the fader
operator image, there are displayed an ON/OFF switching
button (corresponding to the channel ON/OFF switch
(“CH_ON”) 35) for the input channel in question, and a
CUE-function ON/OFF switch CUE corresponding to the
(AGA) function” for the channel set as the channel variable (i)
is checked. Let it be assumed here that, if the parameter
AGA(i) is “1”, it indicates that the AGA function is ON, but,
if the parameter AGA(i) is “0”, it indicates that the AGA
function is OFF. Value of the ON/OFF setting parameter
AGA(i) is set in accordance with the ON/OFF state of the
65
FIG. 5B shows an example operational sequence of pro
cessing carried out in the instant embodiment in response to
operation of the attenuator of a given input channel i. The
operation of the attenuator can be performed using the screen
displayed on the display device 6 or physical operator pro
vided on the operation panel. Once the attenuator of the given
input channel i is operated, the attenuator parameter value
AT(i) of the input channel i, stored in the current memory
US 8,705,768 B2
11
12
area, is updated in accordance with an amount of the opera
completion of the sequential operation data writing, the cur
tion performed by the user (step S8).
rent memory area is unlocked to allow the stored contents of
the current memory area to be re?ected in the signal process
If the AGA function of the input channel i is currently set in
the ON state, it means that the attenuator parameter value
ing by the DSP 4.
AT(i) of the input channel i has been automatically adjusted in
In the scene recall, the user can make non-recall (“recall
accordance with an amount of variation of the HA gain of the
safe”) setting on some of desired operation data to be recalled.
Operation data set as an non-recall subject or object is not
input port k connected with the input channel i (step SS).
Thus, the attenuator parameter value AT(i) having been auto
recalled (for overwriting). Such non-recall setting can be
made per signal processing module of each of the input and
matically adjusted in the aforementioned manner is used as an
initial value at the time of operation of the attenuator. In the
case where the attenuator parameter value AT(i) has been
output channels (e.g., HA module, ATT module, EQ module,
COMP module, tone volume fader module, SEND module or
automatically adjusted by the AGA function, it appears super
the like). Further, non-recall setting can be made indepen
?cially that the attenuator level has been varied in accordance
with the attenuator parameter value AT(i). However, the auto
dently for each signal processing module (e. g., DCA, effecter,
attenuator parameter value AT(i) in accordance with the
amount of variation of the HA gain; thus, in actuality (i.e.,
GEQ or the like) that does not belong to any one of the input
and output channels.
At step S12, patch link data in the read-out scene data set is
auditorily), it is possible to operate the attenuator with a level
checked. Note that each scene data set includes no patch data
matically-adjusted result is only offset from the previous
(i.e., operation data for patching) itself but includes “patch
feeling as if the previous attenuator parameter value AT(i)
were the initial value. Note that, even when the AGA function
20
scene data set includes patch link data (YES determination at
of the input channel i is ON and the attenuator of the input
channel i has been operated, the HA gain of the input port
having the input channel i as its patched-to destination is not
varied in the instant embodiment.
In the ?eld of digital mixers, a so-called pairing function
link data” for linking to particular patch data. If the read-out
step S12), linked-to patch data (i.e., patch data to which the
25
scene data set is to be linked) is copied, at step S13, on the
basis of the patch link data and written into the current
memory area. In the read-out scene S, for each of the input
channels, whose patching has been changed, the AGA func
has been known, which allows a user to combine two desired
input channels into a pair so that a desired parameter can be
tion of the patching-changed channel does not work even
varied for the paired input channels in an interlock fashion.
Such a pairing function may be employed, for example, in
retaining the level that was set before the recall.
cases where two monaural input channels are paired and a
when it is in the ON state, because there is nothing about
30
signal of each channel of two-channel stereo audio signals is
distributed to individual ones of the paired input channels so
that mixing processing is performed on the two-channel ste
reo audio signals supplied to the paired channels. The user can
select any desired parameter that is to be varied in the paired
channels simultaneously in an interlocked fashion.
In a case where the attenuator parameter of the input chan
nel i is set in paired relation to the attenuator parameter of
read-out scene data set and written into the current memory
area. The AGA settings recalled here are re?ected in subse
quent processing. Namely, for each input channel where the
35
input port. The AGA operation data is never set as a non-recall
40
channel i is turned on. Further, once the AGA function of the
input channel i is turned off, the paired state of the parameter
setting parameter is again made valid as before the turning-on
of the AGA function. Namely, in the case where the pairing
has been canceled compulsorily in response to turning-on of
the AGA function, it is restored in response to tuming-off of
the AGA function.
FIG. 6 is a ?ow chart showing an example operational
sequence of scene recall processing performed in the instant
embodiment. Once the scene recall switch 130 (FIG. 2) is
operated by the user, a scene data set (i.e., a set of various
AGA function is ON, the value of the attenuator AT is auto
matically adjusted by the AGA function when the HA gain of
a given input port patched to the input channel has been
adjusted and in accordance with the gain adjustment in the
another input channel, the pair is canceled compulsorily, in
the instant embodiment, once the AGA function of the input
Then at step S14, AGA (Auto Gain Adjustment) operation
data of the individual input channels are copied from the
(“recall-safe”) object; namely, the AGA operation data is an
object that is always recalled.
At following step S15, for each input channel where the
HA module has been set as a non-recall object, the HA gain
value IPG of a given analog input port is copied from the
45
read-out scene data set and written into the current memory
area.
Here, if the AGA function is ON, the operations at and after
step S3 of FIG. 5A are carried out, so that a value AT' having
been automatically adjusted in accordance with variation of
current memory area is locked so that the stored contents of
the current memory area are not re?ected in the signal pro
the gain value IPG copied from the scene data set is written,
as the attenuator value AT of the input channel, into the
current memory. In the case where the analog input port has
been patched to two more input channels including that input
channel, the respective attenuator values AT of these patched
to input channels will be automatically adjusted in accor
dance with variation of the gain value IPG. If, on the other
hand, the AGA function is OFF, the attenuator value AT of the
cessing by the DSP 4. Each of the scene data sets contains a
input channel is not automatically adjusted at this stage, irre
50
operation data) corresponding to the scene S selected by the
user is read out from the scene memory area, at step S10 of
FIG. 6. The thus read-out scene data set is temporarily stored
in a working memory provided in the RAM 3. At step S11, the
55
variety of operation data. At the time of the scene recall, all of
the operation data contained in the scene S must be made
60
valid concurrently. Thus, in the scene recall, the current
memory area is locked ?rst (step S11 above) to prevent the
spective of variation in the IPG copied from the scene data set.
Note that, for each input channel where the HA module has
been set as a non-recall object, the same HA gain value IPG as
before the recall is maintained.
stored contents of the current memory area from being
Namely, because the HA gain of each of the input channels
re?ected in the signal processing by the signal processing
is recalled at step S15 after the AGA function of each of the
input channels has been set to the ON or OFF state at step S14,
section, and then the operation data of the scene S are sequen
65
tially written into the current memory area through operations
the AGA function can be caused to work on the recall opera
at and after step S12 as will be described below. Then, upon
tion of the HA gain.
US 8,705,768 B2
14
13
channel where the ATT module has not been set as a non
channel may be performed via the ON/OFF switch 16 pro
vided in the corresponding channel strip. In this case, the
recall object is copied from the read-out scene data set and
written into the current memory area. Thus, for each input
input channels assigned to the channel strips.
At next step 816, the attenuator value AT of each input
ON/OFF state of the AGA function can be set for each of the
One example manner in which the ON/OFF setting
arrangement of the AGA function may be effectively used is
channel where the ATT module is not set as a non-recall
object, the value AT' having been automatically adjusted by
explained below.
the AGA function at step SIS above is overwritten with the
attenuator value AT included in the scene data set. Namely,
When signal input equipment, such as a microphone, has
been connected to a given input port, the HA gain of the input
port is adjusted, then the AGA function of each of the input
channels, supplied with a signal from the input port, is turned
on, and thence the mixing processing is started. Here, even
when the attenuator of the input channel has been operated,
the HA gain of the input port having the input channel as its
patched-to destination does not vary, by virtue of the AGA
function arranged to automatically adjust the attenuator in
the attenuator parameter value AT recalled as scene data is
given priority over the value AT' automatically adjusted by the
AGA function. If, on the other hand, the ATT module is set as
a non-recall object and the AGA function of the input channel
is ON, the value AT' automatically adjusted by the AGA
function is employed at step 814; if the AGA function of the
input channel is OFF, the same attenuator value AT as before
the recall is maintained.
The operations carried out at steps $15 and 816 may be
accordance with a variation amount of the HA gain. By set
summarized as follows.
(1) Where neither the HA module norATT module is set as
a non-recall object, the HA gain value IPG and attenu
20
ator value AT are set in accordance with the scene data.
(2) Where the HA module is set as a non-recall object, the
HA gain value IPG is excluded from the scene recall
(i.e., not recalled from the scene), but the attenuator
value AT is set in accordance with the scene data.
(3) Where the ATT module is set as a non-recall object, the
HA gain value IPG is set in accordance with scene data.
If the AGA function is ON, the attenuator value AT is
automatically adjusted in accordance with a variation
amount of the HA gain value IPG set in accordance with
input channel can be ?xed at a constant level without the user
25
30
(4) Where the HA module and ATT module are both set as
non-recall objects, both of the HA gain value IPG and
attenuator value AT are maintained at the same values as
35
At step 817, the operation data for all of the other factors
(input an output channels and various other modules), not set
as non-recall objects, are copied from the scene data set and
40
written into the current memory area. At following step 818,
the current memory is unlocked upon completion of writing,
into the current memory area, of all of the operation data of
a plurality of channels that process signals, each of the
channels including a level control section that controls
an input level of an audio signal allocated to the channel;
an allocation section that allocates the audio signal, sup
desired ones of said plurality of channels, wherein each
of the channels can receive the audio signal from any one
area to be re?ected in the processing by the CPU 4. In this
way, all of the operation data of the recalled scene data set are
made valid concurrently, so that the mixing state of the scene
S can be reproduced.
According to the instant embodiment as described above,
45
when the HA gain of a given analog input port has been
adjusted, the attenuator value AT of each patched-to input
channel that is a patched-to destination of the input port is
50
of the input ports that has been allocated thereto;
a plurality of mixing buses, each capable of mixing the
audio signals supplied from one or more of said channels
to the mixing bus;
an automatic adjustment section that, in accordance with
gain adjustment in said input ports, automatically
adjusts level control to be performed by the level control
section in each of the channels, having the audio signal
of a corresponding one of said input ports allocated
thereto, to compensate for level variation having
occurred due to the gain adjustment in the corresponding
automatically adjusted, by the AGA function, so as to cancel
55
one of said input ports; and
a setting section that sets an ON/OFF state of an automatic
adjustment function of said automatic adjustment sec
tion independently for each channel,
channels is not in?uenced even when the HA gain of any one
of the input ports has been adjusted.
Whereas the embodiment has been described above in
1. A mixing apparatus comprising:
an input port for receiving an audio signal, the input port
being con?gured to adjust a gain of the received audio
signal and to output the audio signal with adjusted gain
in digital representation, wherein a plurality of the input
ports are provided, and the gain adjustment can be per
formed independently for each of said input ports;
plied from each of said input ports, to one or more
the scene, to allow the stored contents of the current memory
out the HA gain adjustment. Thus, in the digital mixer where
the input ports and the input channels are connected via the
input patch section, there can be achieved the superior bene?t
that the mixing ratio among signals of the individual input
operating the attenuator of the patched-to input channel.
Therefore, the provision of the AGA function ON/OFF
switching arrangement in all of the input channels is very
useful.
What is claimed is:
the scene data.
before the recall.
Therefore, in the case of (3) above, a scene recall using the
AGA function is permitted if the AGA function is ON.
ting the AGA function of each of the input channels, supplied
with the signal from the input port, to the ON state, the
attenuator of each patched-to input channel is automatically
adjusted when the HA gain of the input port is adjusted at a
later time. Thus, the signal (i.e., output signal of the attenua
tor) to be used in the signal processing in each patched-to
60
wherein the automatic adjustment section further deter
mines the gain adjustment in a respective one of said
relation to the case where the input channel screen of FIG. 4
input ports, and wherein automatically adjusting the
includes the button 46 for setting the ON/OFF state of the
AGA function of the input channel called to the screen, the
ON/OFF state setting or switching of the AGA function may
input ports includes automatically adjusting the level
be performed via a corresponding physical switch provided
on the operation panel of FIG. 2. For example, the ON/OFF
state switching of the AGA function for each of the input
level control in accordance with gain adjustment in said
control based on the gain adjustment determined as for
65
the corresponding one of said input ports.
2. The mixing apparatus as claimed in claim 1 wherein each
of said input ports includes a manually-operable gain adjuster
US 8,705,768 B2
16
15
for adjusting the gain of the received audio signal irrespective
of the respective ON/OFF setting of the automatic adjustment
ment function for the given channel has been set to the
function of said automatic adjustment,
Wherein the respective level control section of each channel
includes a manually-operable level control operator for
controlling the level of the audio signal in the respective
adjustment to be performed by said automatic adjust
ON state by the ON/OFF setting data, automatic level
ment section for the given channel is made valid, so that
the input level control to be performed by the level
control section for the given channel, excluded from the
scene recall control, is automatically adjusted in the
channel, and
Wherein, for each of the channels for Which the automatic
adjustment function is currently set in the ON state by
direction to cancel out level variation having occurred
due to automatic gain adjustment in the corresponding
said setting section, said automatic adjustment section
automatically adjusts, in accordance With gain adjust
ment by the gain adjuster of the corresponding one of
one of said input ports.
8. The mixing apparatus as claimed in claim 1 Which fur
ther comprises:
said input ports, an input level of the channel to be
controlled by the level control section in accordance
With operation of the level control operator.
3. The mixing apparatus as claimed in claim 2 Wherein the
level control operator of each of the channels is an automati
a scene data memory that stores scene data for a plurality of
scenes, each scene including various settings in said
mixing apparatus; and
a scene recall control section that selects a scene from
cally-operable operator, and an operating position of the level
among said plurality of scenes and, in accordance With
control operator is automatically moved in response to auto
the scene data, stored in said scene data memory, corre
matic adjustment, by said automatic adjustment section, of
the input level of the channel responsive to the gain adjust
ment by the gain adjuster of the corresponding one of said
20
and
Wherein said scene data include ON/OFF setting data that
input ports.
4. The mixing apparatus as claimed in claim 2 Wherein,
irrespective of the ON/OFF setting of the automatic adjust
ment function set by said setting section, a gain of the gain
25
adjuster is not automatically adjusted even When the level
control operator has been operated.
5. The mixing apparatus as claimed in claim 1 Wherein each
of said input ports includes a gain adjuster that performs gain
30
adjustment on the input analog audio signal, and an A/D
converter that converts the analog audio signal, having been
subjected to the gain adjustment by the gain adjuster, into the
35
each of the channels includes a characteristic controller that
45
mixing apparatus; and
said plurality of channels, each of the channels being capable
among said plurality of scenes and, in accordance With
buses each capable of mixing the audio signals supplied from
the scene data, stored in said scene data memory, corre
50
one or more of said channels to the mixing bus, said program
comprising:
tively makes various settings in said mixing apparatus,
and
Wherein said scene data include ON/OFF setting data that
a step of, for each of the channels, setting an ON/OFF state
of an automatic adjustment function independently of
55
excluded from scene recall control, and
60
been automatically set, in scene recall control, in accor
dance With the scene data, and on condition that a selec
tion has been made to exclude, from the scene recall
control, input level control to be performed by the level
control section for a given one of the channels, having
the audio signal of the corresponding one of said input
ports allocated thereto, and that the automatic adjust
from each of said input ports, to one or more desired ones of
of receiving the audio signal from any one of the input ports
that has been allocated thereto; and a plurality of mixing
a scene recall control section that selects a scene from
Wherein, When the gain adjustment in said input ports has
adjustment can be performed independently for each of said
input ports; a plurality of channels that process signals, each
allocation section that allocates the audio signal, supplied
a scene data memory that stores scene data for a plurality of
sets, independently for each of said plurality of chan
nels, setting the ON/OFF state of the automatic adjust
ment function to be performed by said automatic adjust
ment section,
Wherein a particular setting function can be selectively
the mixing apparatus including: a plurality of input ports each
of the channels including a level control section that controls
an input level of an audio signal allocated to the channel; an
7. The mixing apparatus as claimed in claim 1 Which fur
ther comprises:
sponding to the selected scene, automatically collec
storing a program for causing a computer of a mixer apparatus
to perform automatic adjustment on an input level of a signal,
adjusted gain in digital representation, Wherein the gain
40
of the mixing buses.
scenes, each scene including various settings in said
ON/OFF state of the automatic adjustment function for
each of said channels in accordance With the ON/OFF
setting data included in the scene data.
con?gured to receive an audio signal, adjust a gain of the
received audio signal and output the audio signal With
processes the audio signal having been subjected to level
control by the level control section, and each of the channels
further includes a level setter that controls the level of the
audio signal to be supplied from said channel to desired ones
sets, independently for each of said plurality of chan
nels, setting the ON/OFF state of the automatic adjust
ment function to be performed by said automatic adjust
ment section, and
Wherein, in scene recall control, said setting section sets the
9. A non-transitory computer readable storage medium
digital audio signal.
6. The mixing apparatus as claimed in claim 1, Wherein
sponding to the selected scene, automatically collec
tively makes various settings in said mixing apparatus,
65
other said channel;
a step of determining the gain adjustment in a respective
one of said input ports; and
a step of, in accordance With the gain adjustment in said
input ports, automatically adjusting level control to be
performed by the level control section in each of the
channels, Which has the audio signal of a corresponding
one of said input ports allocated thereto and for Which
the automatic adjustment function is currently set in the
ON state, to compensate for level variation having
occurred due to the gain adjustment in the corresponding
one of said input ports,
Wherein automatically adjusting the level control in accor
dance With gain adjustment in said input ports includes
US 8,705,768 B2
17
18
Wherein said second setting section controls the value of
automatically adjusting the level control based on the
gain adjustment determined as for the corresponding
one of said input ports.
10. A mixing apparatus comprising:
a plurality of input ports, each input port receives an audio
signal, adjusts a level of the audio signal in accordance
01
the second parameter of a channel in accordance With
the second operation on a second level control, provided
for the channel, by the user, and
Wherein for each channel of Which the third parameter is set
to the ON state, said automatic adjustment section auto
With a value of a ?rst parameter and supplies the audio
matically adjusts the value of said second parameter in
signal of the adjusted level in digital representation,
accordance With the ?rst operation on the ?rst level
control by the user.
12. The mixing apparatus as claimed in claim 11 Wherein
the second level control is an automatically-operable control,
Wherein the level adjustment can be performed indepen
dently for each of said input ports;
a ?rst setting section that changes the value of said ?rst
parameter of any port in response to a ?rst operation by
and When the automatic adjustment section automatically
adjusts the value of said second parameter in accordance With
a user;
a plurality of channels, each channel performs signal pro
the ?rst operation on the ?rst level control, a position of the
second level control is automatically moved in accordance
With the value of the second parameter.
13. The mixing apparatus as claimed in claim 11 Wherein,
irrespective of state of the third parameter set by the third
cessing on an audio signal supplied to the channel so as
to control characteristic of the audio signal, said signal
processing including a level control for controlling a
level of the audio signal in accordance With a value of a
second parameter at a input stage of said signal process
ing;
20
setting section, the value of said ?rst parameter of each port
a second setting section that changes the value of said
does not changes even When the second level control of a
second parameter of any channel in response to a second
channel is operated by the user.
14. The mixing apparatus as claimed in claim 10 Wherein
operation by the user;
an allocation section that allocates the audio signal, sup
plied from each of said input ports, to one or more
said input port includes an A/D converter that converts an
25
desired ones of said plurality of channels, and supplies
the audio signal from the input port to the allocated ones
of said plurality of channels, Wherein each of the chan
an analog audio signal, and
Wherein said audio signal Which said input port supplies is
nels can receive the audio signal from any one of the
input ports that has been allocated thereto;
a plurality of mixing buses, each capable of mixing the
30
to the mixing bus;
and
35
setting section, automatically adjusts the value of said
signal from the one input port is allocated by said allo
40
scenes, the scene data of each scene including values of
45
channel to either ON state or OFF state in response to a
setting section,
a scene recall control section that selects a scene from
among said plurality of scenes and, in accordance With
the scene data of the selected scene, stored in said scene
data memory, automatically collectively makes up vari
ous settings in said mixing apparatus, and
50
Wherein said scene data includes the value of said third
parameter of each channel as one of said various param
eters, and
Wherein, When the scene recall control section makes vari
on the determined value of said ?rst parameter.
11. The mixing apparatus as claimed in claim 10 Wherein
said ?rst setting section adjusts the value of said ?rst param
eter, of an input port, in accordance With the ?rst operation on
a ?rst level control, provided for the input port, by the user and
irrespective of the state of the third parameter set by the third
further comprises:
various parameters for controlling various settings in
said mixing apparatus; and
third operation by the user,
Wherein the automatic adjustment section further deter
mines the value of said ?rst parameter of one port, and
Wherein automatically adjusting the value of said second
parameter of each channel of Which a third parameter is
set to ON state includes automatically adjusting based
includes a set of level controls for controlling levels of
a scene data memory that stores scene data for a plurality of
audio signal output from said ?rst stage of the channel,
having occurred due to the change of the value of said
?rst parameter of the one input port by said ?rst setting
section; and
a third setting section that sets said third parameter of any
Wherein said signal processing of each channel further
audio signals to be supplied from said channel to desired
ones of the mixing buses.
16. The mixing apparatus as claimed in claim 10 Which
second parameter of each channel, of Which a third
parameter is set to ON state, and to Which the audio
cation section, so as to cancel out level variation of the
a digital audio signal converted by the A/D converter.
15. The mixing apparatus as claimed in claim 10 Which
further comprises a plurality of mixing buses for mixing the
audio signals supplied to said mixing buses by said channels,
audio signals supplied from one or more of said channels
an automatic adjustment section that, When the value of
said ?rst parameter of one port is changed by said ?rst
analog audio signal into a digital audio signal,
Wherein said audio signal Which said input port receives is
55
ous settings in said mixing apparatus, said third param
eter of each channel in said mixing apparatus is set either
ON state or OFF state in accordance With the value of
third parameter of the channel included in the selected
scene data.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement