Audio mixing apparatus
US008351623B2
(12) Ulllted States Patent
(10) Patent N0.:
Terada
(54)
(45) Date of Patent:
AUDIO MIXING APPARATUS
(75) Inventor:
US 8,351,623 B2
Jan. 8, 2013
FOREIGN PATENT DOCUMENTS
JP
Kotaro Terada, Hamamatsu (JP)
2009-027574 A
_
2/2009
OTHER PUBLICATIONS
(73) Ass1gnee: Yamaha Corporation (JP)
Digital Mixing Console M7CL Owner’s Manual, Yamaha Corpora
( * ) Notice:
Subject to any disclaimer, the term of this
tiOIl, 2005, httP1//WWW2~yamaha~°°1P/manua1/Pdf/Pa/engliSh/mix
patent is extended or adjusted under 35
efS/II17CLeI1i0II1ie0Pdf, pp 1-282
U.S.C. 154(b) by 310 days.
* cited by examiner
(21) Appl.N0.: 12/749,042
22
(
F1 d_
)
M
1e '
29 2010
an
(65)
Assistant Examiner * George Monikang
Prior Publication Data
US 2010/0309153 A1
(30)
ar-
Dec. 9, 2010
(57)
(JP) ................................. .. 2009-78036
JP
2009 78037
,
(
) """"""""""""""""""""" "
ABSTRACT
Each Oflevelmete? blocklmages 21w 2'" arranged .OnatPuch
panel d1splay 1 d1splays, as a bar graph, respect1ve s1gnal
'
levels of channels of a corresponding one of m blocks into
Int Cl
Which a plurality of channels are divided. The level meter
H0213 '1/00
(2006 01)
block images 21 to 2m also serve as assignment selection
H03G 3/00
G1 0H 7/00
(200601)
(200601)
buttons of an assignment selection portion 2. For each level
meter block image, an image generation portion 8 generates
'
(52)
Attorney, Agent, orFirm * Rossi, Kimms & McDoWell
Foreign Application Priority Data
Mar. 27, 2009
M 27 2009
(51)
Primary ExamineriYuwen Pan
’
_
_
not only an image of a bar graph but also an image Which
US. Cl. ...... .... ...... ... .......... .. 381/119, 381/61, 84/645
(58) Fleld of Classl?catlon Search """
_
indicates respective Color indicators of the respective Chan_
38841/66415’
_
_
nels such that, When a signal type of a channel indicates that
’
there is a signal correlationbetWeen the channel and its neigh
See apphcanon ?le for Complete Search hlstory'
boring channel, the channel has a color indicator of a con
References Cited
nected shape shared With the neighboring channel, and syn
thesiZes these images to output the synthesized image to an
image display control circuit 3.
(56)
U.S. PATENT DOCUMENTS
2004/0240686 Al*
2009/0028359 A1
12/2004
Gibson ....................... .. 381/119
16 Claims, 10 Drawing Sheets
1/2009 Terada et al.
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US 8,351,623 B2
1
2
AUDIO MIXING APPARATUS
designed such that When a signal type of a channel indicates
that there is a signal correlation betWeen the channel and its
neighboring channel, the indicator of the channel has a con
BACKGROUND OF THE INVENTION
nected shape shared With the neighboring channel; and syn
thesiZing the generated images to display the synthesiZed
1. Field of the Invention
The present invention relates to an audio mixing apparatus
Which has a display on an operating panel and mixes a plu
image on the display.
In addition, the image generating means generates an
rality of input audio signals to output the mixed audio signals.
image for superimposing respective fader position markers of
2. Description of the Related Art
Conventionally, a large audio mixing apparatus inputs a
the channels indicative of respective current positions of the
faders of the channels on the respective bars of the bar graph
indicative of the channels. In this case, When the signal type of
the channel indicates that there is the signal correlation
betWeen the channel and its neighboring channel, the fader
position marker of the channel has a connected shape shared
With the neighboring channel.
Furthermore, the image generating means generates an
multiplicity of audio signals and mixes the input signals,
resulting in an increased number of channels. The increase in
the number of channels leads to an increased number of
physical operators provided for the respective channels,
resulting in a Wide operating panel. Such a conventional large
audio mixing apparatus involves not only an increased price
but also dif?cult operability.
Therefore, there has been a knoWn audio mixing apparatus
having a large display on an operating panel and a plurality of
assignment channel strips placed in front of the display
(Manual for Digital Mixing Console M7CL” (online),
Yamaha Corporation). This conventional audio mixing appa
image for superimposing respective fader position markers of
the channels indicative of the respective fader positions of the
channels stored as scene data on the respective bars of the bar
20
tively, by user’s manipulation.
ratus alloWs a user, by selecting a block of input channels
from among input channels Which are to be controlled at an
input channel strip portion placed around the operating panel
25
a user to concurrently observe various kinds of information
such as the respective signal types of the channels, the respec
tive current fader positions of the channels, the respective
HoWever, the selection of channels Which are to be assigned
30
such a conventional audio mixing apparatus to alloW the user
the user is able to see the various kinds of information of the
35
There has been another knoWn audio mixing apparatus
Which has a touch panel sub-display provided on the right of
an assignment channel strip portion to display images each
indicative of respective levels of a channel group formed of a
plurality of channels to alloW a user to touch and select his
channels in addition to the signal levels to observe respective
statuses of signal processing on the respective channels on the
basis of the various kinds of information.
It is another feature of the present invention that the audio
mixing apparatus further includes touch detecting means for
detecting an area Where a user has touched on the display, the
40
desired one of the images to assign the channels contained in
his selected image to assignment channel strips (Japanese
Unexamined Patent Publication No. 2009-27574). HoWever,
the images of the conventional audio mixing apparatus sim
ply indicate respective signal levels of the channels.
fader positions of the channels stored as scene data and the
respective colors of the channels set by user’s manipulation.
By the level meter image displayed on the display, as a result,
to change the number of assignable channels. In addition, the
conventional audio mixing apparatus requires space for the
physical operators.
Therefore, the audio mixing apparatus of the present inven
tion displays the respective signal levels of the channels by
use of the bars of the bar graph on the display, also alloWing
to assign the selected input channel block to the assignment
channel strips, to process signals of the assigned input chan
nels at the central portion as Well Where the display is placed.
to the assignment channel strips is done by use of physical
operators. Disadvantageously, therefore, it is di?icult for
graph indicative of the channels.
In addition, the image generating means displays the
respective indicators in colors set for the channels, respec
45
display being a touch panel display; a plurality of assignment
channel strips; and channel assigning means, Wherein the
image generating means generates, as the level meter image,
a plurality of blocks of level meter images each of Which
indicates a corresponding block of the channels divided into
a certain number of blocks; and the channel assigning means
detects a user’s touch of one of the level meter images dis
played on the touch panel display on the basis of an output of
the detection by the touch detecting means to select a block of
channels corresponding to thc touchcd level meter image and
SUMMARY OF THE INVENTION
The present invention Was accomplished to solve the
above-described problems, and an object thereof is to provide
an audio mixing apparatus Which displays, on a display, level
meter images each indicative of respective signal levels of a
50
strips, respectively.
Without occupying an operating panel, therefore, the audio
mixing apparatus of the present invention alloWs the user to
select channels Which the user desires to assign to the assign
plurality of channels and alloWs a user to observe not only the
signal levels but also various kinds of information on the
respective channels.
assigns the selected channels to the assignment channel
55
ment channel strips. Without occupying the operating panel,
It is a feature of the present invention to provide an audio
mixing apparatus Which controls a tone volume parameter of
each of a plurality of channels in accordance With a current
more speci?cally, the audio mixing apparatus alloWs the user
to select channels and assign the channels to the assignment
position of a fader of the each channel and displays respective
kinds of information.
It is still another feature of the present invention to provide
an audio mixing apparatus Which controls a tone volume
parameter of each of a plurality of channels in accordance
With a current position of a fader of the each channel and
displays respective signal levels of the channels as a level
meter image on a display, the audio mixing apparatus includ
signal levels of the channels as a level meter image on a
channel strips While observing the above-described various
60
display, the audio mixing apparatus including image gener
ating means for generating the level meter image by use of
respective bars of a bar graph indicative of the respective
signal levels of the channels; generating an image indicative
of indicators of the channels, respectively, such that the
respective indicators correspond to the respective bars of the
bar graph indicative of the channels, the indicators being
65
ing image generating means for generating the level meter
image by use of respective bars of a bar graph indicative of the
US 8,351,623 B2
4
3
respective signal levels of the channels; generating an image
for superimposing respective fader position markers of the
FIG. 2B is a concrete example of a signal type table indi
cated in FIG. 1;
FIG. 3 is an entire layout indicative of an example operat
ing panel of the embodiment indicated in FIG. 1, a display
screen of the operating panel displaying a ?rst concrete
example of an assignment selection portion and an overview
channels indicative of respective current positions of the fad
ers of the channels on the respective bars of the bar graph
indicative of the channels, and synthesizing the generated
images to display the synthesiZed image on the display.
portion;
In addition, the image generating means generates an
image for superimposing respective fader position markers of
FIG. 4A is a concrete example of a level meter block image
the channels indicative of the respective fader positions of the
indicated in FIG. 1 and FIG. 3, every channel of the example
channels stored as scene data on the respective bars of the bar
being mono;
graph indicative of the channels.
The respective fader positions of the channels stored as the
scene data are, for example, respective positions of the
image indicated in FIG. 1 and FIG. 3, the example having
channels of different signal types;
respective faders of the channels stored as part of the most
recently read scene data set.
indicator display portion indicated in FIG. 4B;
FIG. 4B is a concrete example of the level meter block
FIG. 5A is another concrete example of a channel color
FIG. 5B is the other concrete example of the channel color
In addition, the image generating means generates an
image indicative of respective indicators of the channels in
respective colors set for the respective channels by user’s
indicator display portion indicated in FIG. 4B;
manipulation such that the respective indicators correspond
example of the assignment selection portion and the overview
to the respective bars of the bar graph of the channels.
Therefore, the audio mixing apparatus of the present inven
tion displays the respective signal levels of the channels as the
bars of the bar graph on the display, also allowing the user to
FIG. 6 is a display screen indicative of a second concrete
20
FIG. 7 is a block diagram indicative of an example con
?guration of hardware which realiZes the embodiment indi
cated in FIG. 1;
FIG. 8 is a ?owchart of an image generation program (1)
concurrently ob serve various kinds of information such as the
respective current fader positions of the channels, the respec
25
the respective colors of the channels set by user’s manipula
FIG. 9 is a ?owchart of an image generation program (2)
for generating images of bar graphs of the channels;
tion. By the level meter image displayed on the display, as a
FIG. 10 is a ?owchart of an image generation program (3)
result, the user is able to see the various kinds of information
30
FIG. 11 is a ?owchart of an image generation program (4)
35
40
detects a user’s touch of one of the level meter images dis
45
strips, respectively.
Without occupying an operating panel, therefore, the audio
50
ment channel strips. Without occupying the operating panel,
55
60
respective signal levels of channels belonging to its corre
sponding block.
BRIEF DESCRIPTION OF THE DRAWINGS
indicated in FIG. 1;
placed in a row in the order of channel numbers. The level
of all the channels used on the audio mixing apparatus as bar
graphs, the channels being divided into a given number m of
blocks so that each level meter block image will display
capabilities of the audio mixing apparatus.
FIG. 2A is a concrete example of a channel color table
fader operators of the respective channels are used to control
meter block images 21 to 2m indicate respective signal levels
kinds of information.
Furthermore, the present invention is also applied to an
audio mixing program that enables a computer to realiZe the
FIG. 1 is a functional block diagram indicating a con?gu
ration of an audio mixing apparatus according to an embodi
ment of the present invention;
FIG. 1 is a functional block diagram indicative the con?gu
ration of an audio mixing apparatus according to an embodi
ment of the present invention. In respective channels for
respective values of tone volume parameters of the respective
channels. On an operating panel of the audio mixing appara
tus, a touch panel display 1 is provided. On a part of the
display 1, level meter block images 21 to 2m are laterally
more speci?cally, the audio mixing apparatus allows the user
to select channels and assign the channels to the assignment
channel strips while observing the above-described various
DESCRIPTION OF THE PREFERRED
EMBODIMENT
signal processing (hereafter simply referred to as channels),
the audio mixing apparatus controls respective properties of
signals input to the respective channels and outputs the sig
nals. On the audio mixing apparatus, for example, respective
assigns the selected channels to the assignment channel
mixing apparatus of the present invention allows the user to
select channels which the user desires to assign to the assign
FIG. 12 is a ?owchart of a channel assignment program;
and
FIG. 13 is a ?owchart of an assigned number change pro
gram.
display being a touch panel display; a plurality of assignment
channel strips; and channel assigning means, wherein the
played on the touch panel display on the basis of an output of
the detection by the touch detecting means to select a block of
channels corresponding to the touched level meter image and
for generating images of respective current fader position
markers of the respective channels;
for generating images of respective scene fader position
markers of the respective channels;
detecting an area where a user has touched on the display, the
image generating means generates, as the level meter image,
a plurality of blocks of level meter images each of which
indicates a corresponding block of the channels divided into
a certain number of blocks; and the channel assigning means
for generating images of the channel color indicator display
portion;
tive fader positions of the channels stored as scene data, and
of the respective channels in addition to the signal levels to
observe respective statuses of signal processing on the
respective channels on the basis of the various kinds of infor
mation.
It is a further feature of the present invention that the audio
mixing apparatus further includes touch detecting means for
portion displayed on a main display indicated in FIG. 3;
65
On the operating panel, a plurality of assignment channel
strips 241 to 2416 which will be described later in detail refer
ring to FIG. 3 are arranged. The respective level meter block
images 21 to 2m also serve as assignment selection buttons
(virtual switches) for selecting a channel block which is to be
assigned to the assignment channel strips 24 1 to 2416. A touch
US 8,351,623 B2
5
6
detection circuit 4 detects an area Where a user has touched on
fader positions of the channels stored as part of lastly, in other
the touch panel display 1. On the detection of a user’s touch of
one of the level meter block images 21 to 2m divided into the
Words, as part of the most recently recalled scene data set.
Instead of using the most recently recalled scene data set, a
plurality (m) of blocks, a channel assignment portion 6 selects
user may designates a scene number to select a scene data set
a plurality of channels belonging to the touched level meter
of the designated scene number from among the stored scene
block image and assigns the selected channels to the assign
ment channel strips 241 to 2416, respectively, on the basis of
data sets so that the image generation portion 8 can generate
images for superimposing scene fader position markers on
the respective bars of the bar graphs of the channels. The
scene faderposition markers indicate faderpositions stored as
the output detected by the touch detection circuit 4 and an
assignment number setting portion 5.
part of the selected scene data set. In this case, the user is able
The assignment number setting portion 5 determines a
numbern of assignable channel strips of the assignment chan
nel strips 24. An image generation portion 8 determines a
to previously check (previeW) changes in the respective fader
positions resulting from a recall of the selected scene data set.
As indicated in FIG. 2A, a channel color table 11 stores
number m of splits on the basis of the total number of chan
respective colors assigned to the respective channels by user’ s
nels used on the audio mixing apparatus and the assignable
manipulation. The image generation portion 8 displays
number n, and then generates m blocks of level meter images
into Which the plurality of channels are divided. Usually,
respective channel color indicators (461 to 46 16 of FIG. 4A)
by use of the respective colors of the channels stored in the
every assignment channel strip 24 l to 24 l 6 is assigned a chan
channel color table 11 so that each channel color indicator
nel. HoWever, the number of channels Which con?gure a
block may vary among the level meter block images 21 to 2m
Will be correlated With a bar graph (431 to 4316) of each
channel.
As indicated in FIG. 2B, a signal type table 12 stores
20
as long as the number of channels con?guring a block is
respective signal types assigned to the respective channels by
smaller than the total number of assignment channel strips
241 to 2416. Furthermore, a channel may belong to different
blocks.
The image generationportion 8 generates fundamental part
user’s manipulation. The signal types are employed in order
25
of the level meter block images 21 to 2”, on the basis of bar
to indicate Whether signals of a channel are correlated With
those of its neighboring channel. In a case Where the signal
type of a channel indicates that there is a signal correlation
graphs (431 to 4316 of FIG. 4A) indicative of signal levels of
betWeen the channel and its neighboring channel, the respec
the respective channels Written into a signal level table 7. In
tive faders of the channel and its neighboring channel are
addition, the image generation portion 8 also generates
images for superimposing current fader positions markers
(441 to 4416 of FIG. 4A) of respective channels on respective
bars of the bar graphs of the channels. The current fader
position markers of respective channels indicate the respec
tive positions of faders of the channels Written into a table 9 by
the respective vertical positions of the faders or the like.
A scene fader position table 10 stores respective positions
controlled to be positioned at the same position. In a case
30
table 12 indicates that signals of the channel are correlated
With those of its neighboring channels, the image generation
35
of the faders of the respective channels as scene data at the
time of storage of a scene. Furthermore, the image generation
portion 8 generates images for superimposing scene fader
position markers (451 to 4516 of FIG. 4A) of the respective
Where the signal type of a channel stored in the signal type
40
portion 8 generates an image of a channel color indicator
having a connected shape shared betWeen the channel and its
neighboring channels Which are correlated With each other as
indicated in 5111 to 510 of FIG. 4B. As a result, the channel
color indicator shoWs the user the correlation of the signals
betWeen the channel and its neighboring channels at a glance.
The channel correlated With its neighboring channels is con
trolled in conjunction With the neighboring channels so that
respective values of most parameters (except pan and delay)
channels on the respective bars (43 1 to 43 16 of FIG. 4A) of the
bar graphs of the channels. The scene faderposition makers of
such as the fader position of the channel Will conform to those
the respective channels indicate the respective positions of the
of its neighboring channels (by copy of parameter values of
faders of the channels stored in the scene fader position table
10 as scene data by the respective vertical positions of the
one channel to the other channels). In a case Where the user
45
faders or the like.
A scene is a function of storing respective positions of the
fader operators, respective on/ off states of key sWitches of the
respective channels provided on the operating panel, various
parameter values such as send levels and equalizers of the
respective channels and the like as a single unit of scene data
in a scene memory at the time of storage and putting the
current positions of the faders, on/off states, various param
eter values and the like back to the respective states indicated
50
by the stored scene all at once in response to a recall of the
55
desires to vary respective values of a parameter among the
channels Which are to be controlled in conjunction, those
channels are to be controlled by “pan”.
In the case Where the signal type of the channel indicates
that the signals of the channel are correlated With those of its
neighboring channels, furthermore, the image generation
portion 8 may generate an image of the current fader position
marker so that the channel and its neighboring channels
Which are correlated With each other Will share a current fader
position marker having a connected shape as indicated in 5211
to 520 of FIG. 4B.
For each of the level meter block images 2 l to 2,", the image
scene.
tions as part of the above-described scene data. In the scene
generation portion 8 synthesiZes the image of the bar graph
indicative of corresponding channels, the image of the fader
fader position table 10, more speci?cally, the scene data sets
position markers of the channels, the image of the fader
The scene fader position table 10 stores scene fader posi
are stored in a manner in Which each scene data set is given a 60 position markers of the channels of the scene data and the
image of the indicators of the channels. Then, the image
generation portion 8 outputs the synthesiZed image to an
image display control circuit 3 to display each of the level
meter block images 21 to 2m on the touch panel display 1.
scene number. In other Words, scene faderpositions are stored
in each scene data set as part of the data. On the basis of the
scene fader position table 10, the image generation portion 8
generates images for superimposing the respective scene
fader position markers of the channels on the respective bars
of the bar graphs of the channels. The respective scene fader
position markers of the channels indicate of the respective
65
FIG. 2A and FIG. 2B are concrete examples of the channel
color table 11 and the signal type table 12 indicated in FIG. 1,
respectively. The examples indicated in the ?gures have ?rst
US 8,351,623 B2
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7
to twenty second input channels, respectively. In the example
On the sub-top panel portion 22, channel strips 301 to 3016
of FIG. 2A, the channel color table 11 indicates names of
colors as information for identifying channel colors. Each
channel color is obtained from hue into Which tone (lightness,
are arranged as an upper channel strip portion 30, Whereas
channel strips 31 1 to 311 6 are arranged as a loWer channel strip
portion 31. From among all the channels used on this audio
mixing apparatus, channels belonging to a selected bank are
saturation of color) is incorporated.
recalled to be assigned to the channel strips 301 to 3016. The
selection is made by the manipulation of a selection key
sWitch (a physical operator) of an assignment selection por
tion 32. Each of the channel strips 301 to 3016 has physical
On the basis of the channel colors, the user is able to
identify signals Which are being processed in the respective
channels. The channel colors are set by the user. More spe
ci?cally, the channel colors of the signals Which are processed
in the respective channels are de?ned according to “part”
indicative of source of signal. For example, the channel colors
are de?ned according to parts of musical instruments. That is,
operators such as a plurality of key sWitches and a fader
operator. In accordance With the manipulation of the respec
tive fader operators, respective tone volume parameters of the
the channel colors are de?ned as folloWs: “sky blue” indica
channels assigned to the channel strips 301 to 30 16 are con
tive of guitar; “orange” indicative of vocal; “pink” indicative
of vocal; and “yelloW green” indicative of drum. Further
trolled. The signal processing on each channel is performed in
accordance With various parameter values Written into a cur
rent memory.
more, the channel colors are also de?ned according to voice
range such as soprano and tenor. It is preferable that the
channel color of gray indicates that the channel to Which gray
is assigned is not used or disabled.
FIG. 2B indicates the signal type table 12. More speci?
Types of the channels include input channels for input,
20
MIX channels for output, MATRIX channels, stereo output
channels A and B, and a DCA (Digital Controlled Ampli?er)
group for group control. On the audio mixing apparatus,
cally, the signal types for indicating correlation of signals
sixteen banks are provided, With a selected one of the banks
among neighboring channels include “mono”, “stereo” and
“5.1 surround”. In addition, the signal type table 12 may
include signal types, such as “type I’’ and “type 2” indicated
in the ?gure, de?ned by the user in consideration of the
being assigned to the channel strips 301 to 3016. As for con
ventional audio mixing apparatuses, such banks are referred
25
to as layers. Some of the conventional apparatuses, such as the
above-described conventional apparatus, do not have banks
30
(layers). The channel strips 311 to 3116 are con?gured simi
larly. Therefore, detailed description thereof Will be omitted.
A detailed description about the main top panel 21 Will be
given again. The selection of channels for assigning to the
assignment channel strips 241 to 2416 is done by a touch of
correlation of signals among neighboring channels. In a case
Where a performer uses a microphone to input signals, a
channel for processing the signals is assigned “mono”. In a
case Where a performer uses tWo microphones for stereo or
six microphones for 5.1 surround to input signals, respective
channels for processing the signals are assigned “stereo” or
one of the level meter block images 21 to 2m. Primarily,
assignable channels are those currently assigned to the chan
“5.1 surround”, respectively.
nel strips 301 to 3016, 311 to 3116 ofthe sub-top panel 22.
In a case Where the user desires to assign “stereo” to ch.
ID:3, 4 (input channels 3 and 4), the user is to assign “stereo”
to ch. ID:3 Which is a loWer number. To ch. ID:4 as Well,
In addition, channels Which are not currently assigned to
35
“stereo” is automatically assigned. In addition, sub-channels
are also automatically assigned from a loWer number to a
higher number. That is, ch. ID:3 is assigned “L” (left),
Whereas ch. ID:4 is assigned “R” (right). In a case Where the
user desires to assign “5.1 surround”to ch. ID:l7 to 22 (input
channels 17 to 22), the user is to assign “5.1 surround” to ch.
ID:l7 Which is the loWest number. To ch. IDIl 8 to 22 as Well,
nels that can be used on this audio mixing apparatus) assign
able to the assignment channel strips 241 to 24 16 can be
40
channels are also automatically assigned from a loWer num
2416.
45
levels of channels Which con?gure m number of blocks each
assignable to the assignment channel strips 241 to 2416.
HoWever, the siZe of each level meter block image
50
assignable to the assignment channel strips 24 1 to 241 6 may be
divided into tWo groups, for example (e.g., sixteen blocks
55
divided into one group of 1 st to 8th blocks and the other group
of 9th to 16th blocks), to display blocks belonging to one of
the divided groups on an area of an assignment selection
portion 2 so that the user can sWitch betWeen the tWo groups
60
display 23 is placed Which corresponds to the touch panel
by a manipulation of a display sWitch button displayed on the
screen of the main display 23 to display the user’s desired
group of blocks.
The assignment channel strips 241 to 2416 have not only a
plurality of key sWitches such as channel selection buttons
and fader operators 291 to 2916 but also encoders 281 to 2816,
display 1 of FIG. 1. BeloW the main display 23 (at a near side
seen from the user), assignment channel strips 241 to 2416 are
arranged as an assignment channel strip portion 24. On the
right side of the assignment channel strip portion 24, a stereo/
decreases With an increase in the number of channels Whose
signal levels are to be displayed. In order to prevent the
reduction in the siZe, therefore, the plurality of blocks each
related to the present invention are omitted. In some cases,
sub-displays can be placed in a blank of the main top panel 21
and a blank of the sub-top panel 22, respectively. At the center
of the upper part of the main top panel 21, a touch panel main
In order to serve as buttons for selecting a block, therefore,
the level meterblock images 2 1 to 2m display respective signal
assigned “C” (front center). Ch. ID:20 is assigned “Ls” (left
rear). Ch. ID:2l is assigned “Rs” (right rear). Ch. ID:22 is
assigned “LFE” (sub-Woofer). As for channel color of these
neighboring channels Whose signals are correlated With each
other, it is preferable that these channels are assigned a chan
nel color of the channel of the loWest number, for example.
FIG. 3 is an entire layout of an example operating panel of
the embodiment indicated in FIG. 1. The operating panel is
designed such that a main top panel 21 is connected to a
sub-top panel 22. In this ?gure, parts Which are not directly
assigned as a block. Furthermore, the user is alloWed to freely
de?ne the total number of channels Which con?gure a block
and to specify channels that are to belong to the block to
assign the channels to the assignment channel strips 241 to
“5.1 surround” is automatically assigned. In addition, sub
ber to higher numbers. That is, ch. ID:l7 is assigned “L” (left
front). Ch. IDI18 is assigned “R” (right front). Ch. IDIl 9 is
the channel strips 301 to 3016, 311 to 3116 are also assignable.
More speci?cally, any channels (input channels, output chan
nels, and DCA group channels: generally speaking, any chan
65
respectively. To each of the encoders 281 to 28 1 6, a parameter
mono master fader portion 25 for both stereo output and
type is previously assigned. In accordance With the respective
monaural output is placed.
amounts of rotation of the respective encoders 281 to 2816,
US 8,351,623 B2
10
respective values of the assigned parameters of the channels
omitted in the ?gure) and the scene faderposition markers 45 1
to 4516 (Whose signs are omitted in the ?gure) are the same as
assigned to the assignment channel strips 241 to 2416 change.
rotation of respective knobs and the like, respectively. By a
those of FIG. 4A. As for neighboring channels sharing the
same signal types, in the shoWn example, that is, the input
channel groups 3 and 4, 6 to 8, and 9 to 11, the respective tone
volume parameter values of each neighboring channel group
are controlled in conjunction. In spite of separate current
fader position markers 443 to 444, 446 to 448, and 449 to 441 1
in FIG. 4A, therefore, these current fader position markers are
indicated in FIG. 4B such that the current fader position
markers of each neighboring channel group are placed at the
same position (same height) (signs of 441 to 4416 are omitted
in the ?gure). In FIG. 4B, furthermore, these current fader
user’s touch of a certain area of a channel strip, a certain
position markers are indicated as common current fader posi
parameter sWitches betWeen on and off, or a certain type of
parameter is selected. In a case of a selection of a certain type
tion markers 52a, 52b, 620.
In the channel color indicator display portion 42, the chan
nels having the signal types correlated With their respective
neighboring channels have channel color indicators Which
Below the assignment selection portion 2, an overvieW por
tion 26 is provided Where a virtual assignment channel strip
portion 27 is displayed. The assignment channel strip portion
27 is arranged so as to be seen by the user as if the assignment
channel strip portion 27 Were seamlessly linked to the assign
ment channel strip portion 24 provided on the main top panel
21 in the vertical direction.
What is displayed on the overvieW portion 26 variously
change. In the shoWn example, assignment channel strips 271
to 2716 indicate current parameter values by values, graphs,
of parameter, the parameter type is assigned to an encoder of
a corresponding channel strip, the encoder being included in
are shaped, as indicated by channel color indicators 51a to
the encoders 281 to 2816.
FIG. 4A and FIG. 4B are concrete examples of the level
20
510, as if original rectangles of each neighboring channel
meter block images 21 to 2m indicated in FIGS. 1 and 3. FIG.
group Were melted into one another to have right and left sides
4A and FIG. 4B indicate a case in Which the input channels 1
to 16 are assigned to the level meter block image 21. FIG. 4A
protruding outWard With only the middle parts of the respec
tive original rectangles in the vertical direction being com
bined With each other. The original rectangles of the channels
indicates a case Where every channel is “mono”. FIG. 4A
indicates a level display portion 41 and a channel color indi
25
cator display portion 42 provided beloW the level display
portion 41.
Bars 431 to 4316 of a bar graph indicate respective signal
among the neighboring channels are altered automatically to
be shaped like the combined channel color indicators. Chan
nels of “5.1 surround” Which are not shoWn have a similar
levels of the input channels 1 to 16 measured at a certain point
(metering point). The signal level of —l8 dB or less is indi
cated by a green bar, Whereas the signal level exceeding —l8
dB but being 0 dB or less is indicated by a yelloW bar. The
signal level exceeding 0 dB is indicated by a red bar. The
metering point is selected from among alternatives by the user
for the input channels and for the output channels, respec
tively. For the DCA group, the levels of the signals having the
largest level at a post fader position of the channels Which
con?gure the group are displayed.
30
51a to 510 indicated in FIG. 4B enable the user to recogniZe
35
the correlation of the signals of each neighboring channel
group (the number of channels correlated With each other) by
the number of protrusions Which protrude upWard and doWn
Ward.
Furthermore, the respective current fader position markers
40
52a to 520 eliminate the borders betWeen the respective
neighboring channels so as to indicate the respective signal
correlations among the respective neighboring channels. In a
case Where the signal types are also to be stored as scene data,
borders betWeen the neighboring channels of the scene fader
tion markers 451 to 45 16 are indicators indicative of respective
positions of the fader operators of the channels 1 to 16 stored
as a scene (in the ?gure, signs for the markers 452 to 4516 are
omitted). The hue and lightness of the scene fader position
channel color indicator obtained by combining six neighbor
ing original rectangles With each other so that only the middle
parts of the respective rectangles in the vertical direction can
be combined With each other. The channel color indicators
Current fader position markers 441 to 44 16 are indicators
indicative of respective positions of fader operators of the
respective channels 1 to 16 (in the ?gure, signs for the mark
ers 442, 445, and 4412 to 4416 are omitted). Scene fader posi
having the signal types indicative of the signal correlation
45
position markers provided for the channels having the signal
types indicative of respective signal correlations among the
respective neighboring channels may be eliminated at the
markers 451 to 4516 are determined so that the scene fader
time of storage so that the scene fader position markers Will be
position markers 45 l to 45 16 are seen like shades of the current
displayed Without the borders.
FIG. 5A and FIG. 5B are other concrete examples of the
fader position markers 441 to 4416, respectively. In a case
Where the scene fader position markers 451 to 4516 are over
50
channel color indicator display portion 42 indicated in FIG.
laid on the current fader position markers 441 to 4416, the
scene fader position markers 451 to 4516 are displayed to be
hidden behind the current fader position markers 441 to 4416.
4B. FIG. 5A indicates an example of channel color indicators
61a to 610 each shaped like a rectangle obtained by combin
In a case Where the scene faderposition markers 45 l to 45 l 6
channels of a signal type indicative of a signal correlation
among neighboring channels. Channels of “5.1 surround”
have a rectangular channel color indicator obtained by com
indicate respective positions of the faders of the lastly, that is,
ing a plurality of neighboring original rectangles indicative of
55
most recently recalled scene data set included in the scene
bining six neighboring original rectangles With each other to
data sets, the respective differences betWeen the respective
positions of the scene fader position markers 451 to 4516 and
those of the current fader position markers 441 to 4416 shoW
the user, at a glance, hoW the user has intentionally moved the
respective fader operators since the most recent recall of the
scene data set. Rectangular channel color indicators 461 to
46 16 are displayed as if the bars 431 to 4316 of the respective
input channels 1 to 16 Were extended doWnWard.
form one rectangle. FIG. 5B indicates an example of channel
color indicators 62a to 620 of connected shapes each obtained
60
FIG. 4B indicates a concrete example of a case Where the 65
signal types are set in accordance With the signal type table 12
ofFIG. 2B. In FIG. 4B, the bars 431 to 4316 (Whose signs are
by connecting a plurality of neighboring original rectangles
With each other so that only the middle parts of the respective
rectangles in the vertical direction can be connected With each
other, With edges being rounded. Channels of “5 .l surround”
have a channel color indicator of a similar shape obtained by
combining six neighboring original rectangles With each
other so that only the middle parts of the respective rectangles
in the vertical direction can be combined With each other.
US 8,351,623 B2
11
12
a tone signal input circuit 96 and a tone signal output circuit
97 to an audio bus 95, has a plurality of input ports and a
FIG. 6 is a display screen indicative of the second concrete
example of the assignment selection portion 2 and the over
vieW portion 26 displayed on the main display 23 indicated in
plurality of output ports.
FIGS. 8 to 13 are ?oWcharts of programs carried out by the
CPU 82 in order to realiZe the operation of the embodiment
described With reference to FIG. 1.
FIG. 3. In some occasions, the user desires to ?xedly assign
certain channels to some of the assignment channel strips 24 1
to 2416. In other occasions, furthermore, the user desires to
use some of the assignment channel strips 241 to 2416 for a
purpose other than the control of channels.
In such occasions, the user is alloWed to change the value of
“n” by use of the assignment number setting portion 5 so that
only some of the assignment channel strips 24 1 to 24 1 6, that is,
been demanded. In this image generation program (1), the
only the number n of the assignment channel strips 24 1 to 24 1 6
can be assigned channels. In this case, the number of channels
CPU 82 retrieves respective channel colors of all the channels
from the channel color table 11 (S101), and also retrieves
contained in each of the level meter block images 21 to 2m is
also “n”. As a result, unless the total number of assignable
respective signal types of all the channels from the signal type
An image generation program (1) indicated in FIG. 8 is
carried out When the contents of the channel color table 11 of
FIG. 2A or the signal type table 12 of FIG. 2B have been
changed or When the refreshing of the level meter images has
table 12 (S102). The CPU 82 then draWs color indicators of
channels is changed by the assignment selectionportion 2, the
shapes corresponding to the retrieved signal types in the
number m of blocks displayed on the level meter display area
retrieved channel colors to generate an image of the channel
color indicator display portion 42 of FIG. 4A and FIG. 4B of
is to increase. In the example of FIG. 6, letting n:8, the
assignment channel strips 249 to 2416 of the right half are
de?ned as ?xed channel strips. Unless the total number of
20
channels used on the audio mixing apparatus changes, the
numberm of blocks of level meter block images 711 to 71m is
to be doubled.
FIG. 7 is a block diagram indicative of an example con
?guration of hardWare Which realiZes the embodiment indi
25
cated in FIG. 1. A bus 81 connects among a later described
CPU (Central Processing Unit) 82, a ?ash ROM (Read Only
Memory) 83, a RAM (RandomAccess Memory) 84 and other
hardWare blocks. The CPU 82 controls the entire operation of
the audio mixing apparatus by use of the RAM 84 Which
temporarily stores various kinds of data in accordance With
computer programs stored in the ?ash ROM 83, also trans
An image generation program (3) indicated in FIG. 10 is
30
carried out When the fader operator of a channel has been
manipulated or When the refreshing of the level meter images
has been demanded. In the image generation program (3), the
DSP (Digital Signal Processor) 91 and retrieving signal level
35
The signal level table 7 and the current fader position table
9 indicated in FIG. 1 are stored in the RAM 84 as part of
current memory. The scene fader position table 10, the chan
nel color table 11 and signal type table 12 are stored in the
?ash ROM 83. The computer programs enable the CPU 82 to
carried out at regular time intervals or When the refreshing of
the level meter images has been demanded. In the image
generation program (2), the CPU 82 retrieves respective level
values of all the channels (S111). The CPU 82 then refreshes
bar graph images in accordance With the retrieved level values
to generate an image of the bars 431 to 4316 of FIG. 4A and
FIG. 4B of each of the level meter block images 21 to 2m
(S112).
ferring parameter values such as tone volume parameters to a
values from the DSP 91.
each of the level meter block images 21 to 2m (S103).
An image generation program (2) indicated in FIG. 9 is
40
CPU 82 retrieves the position of the manipulated fader of the
channel (S121). The CPU 82 then refreshes the current fader
position markers 441 to 4416 of FIG. 4A and FIG. 4B in
accordance With the retrieved position of the manipulated
fader to generate an image of the current fader position mark
ers for each level meter block image (S122).
An image generation program (4) indicated in FIG. 11 is
carried out When scene data is recalled or When the refreshing
realiZe respective functions of the assignment number setting
portion 5, the channel assignment portion 6 and image gen
of the level meter images has been demanded. In the image
generation program (4), the CPU 82 retrieves fader positions
eration portion 8 indicated in FIG. 1 and functions of Writing/
reading data into/from various tables such as the signal level
table 7.
CPU 82 then refreshes the scene fader position markers 45 1 to
451 6 of FIG. 4A and FIG. 4B in accordance With the retrieved
stored in the most recently recalled scene data set (S131). The
45
Operators 85 include key sWitches, encoders, fader opera
tors and touch panels provided for the channel strips. The
fader operators are motor-driven moving faders, for example.
A display portion 87 is an LED (light emitting diode) display.
An external apparatus 89 is a personal computer, for example.
fader positions to generate an image of the scene fader posi
tion markers of the mo st recently recalled scene for each level
meter block image (S132).
50
By an administration program installed on the personal com
puter, the personal computer is able to remote-control the
audio mixing apparatus, edit parameters and store set param
(channel IDs, parameter values, etc.) of the channels Which
eter values.
The DSP 91 realiZes the signal processing function of the
audio mixing apparatus in accordance With a micro -program
55
under the control of the CPU 82. The DSP 91 inputs tone
signals from a plurality of audio input apparatuses such as
microphones 93 through a Waveform I/O (Waveform input/
output data interface) 92. The DSP 91 then performs digital
signal processing such as control of attenuator, equalizer,
and the like, and refreshes the displayed operators and the
60
compressor, gate, expander, fader and send level on a plurality
92, Which is realiZed, as principles, by connecting the DSP 91,
are to assign (S141). The CPU 82 then assigns the retrieved
channel information to the respective operators of the assign
ment channel strips 241 to 2416 of FIG. 3 (S142), refreshes
respective positions of the fader operators (moving faders)
displayed parameter values of the assignment channel strips
(screen) 271 to 2716 (S143) to execute the channel assign
ment.
An assigned number change program indicated in FIG. 13
of channels, also mixing output signals of the channels to
output tone signals to a plurality of audio output apparatuses
such as a speaker 94, a monitoring headphone and a recording
apparatus through the Waveform I/O 92. The Waveform I/O
A channel assignment program indicated in FIG. 12 is
carried out When a manipulation of selecting channels Which
are to be assigned has been made or When the refreshing of the
level meter images has been demanded. In the channel assign
ment program, the CPU 82 retrieves channel information
65
is carried out When a demand for changing the number of
assigned channels has been detected. The change in the num
ber of assigned channels is equivalent to a change from the
assignment selection portion 2 of FIG. 3 to the assignment
US 8,351,623 B2
14
13
neighboring channel, the fader of the channel and that of
selection portion 71 of FIG. 6 and vice versa. In the assigned
number change program, the CPU 82 retrieves the number of
?xed channels (S151). The CPU 82 then redivides (or
regroups) the channels that are to be indicated by the level
meter images so that each level meter image Will have a
the neighboring channel are situated at the same posi
tion; and
a controller that:
generates the level meter image using respective bars of
a bar graph indicative of the respective signal levels of
the channels stored in the signal level storing device;
number of channels, the number being obtained by subtract
ing the ?xed number from the maximum assignable number
(S152). The maximum assignable number is the number of
generates an image indicative of indicators of the chan
nels, respectively, so that the respective indicators
correspond to the respective bars of the bar graph
indicative of the channels, the indicators being
designed so that When the signal type of the channel
stored in the signal type storing device indicates that
there is the signal correlationbetWeen the channel and
its neighboring channel, the indicator of the channel
has a connected shape shared With the neighboring
channel; and
assignment channel strips 24 l to 2416, Whereas the number of
?xed channels is 8 in the example of FIG. 6. The CPU 82 then
instructs to refresh the redivided level meter images (S153).
By execution of the programs indicated in FIGS. 8 to 12, the
respective images are generated on the condition provided
after the redivision.
In the above description, the audio mixing apparatus is
designed such that the user selects a channel block Which the
user desires to assign to the assignment channel strip portion
24 by touching one of the level meter block images 21 to 2m
displayed on the main display 23 of the main top panel 21.
HoWever, the audio mixing apparatus may be modi?ed to be
provided With a touch panel sub-display Which is not shoWn
in the space betWeen the upper channel strip portion 30 and
the loWer channel strip portion 31 of the sub-top panel 22 to
eliminate the assignment selection portions 32, 33.
The audio mixing apparatus may be also designed such that
the sub-display has level meter block images of all the chan
nels assignable to the upper channel strip portion 301 to 3016
synthesiZes the generated images to display the synthe
20
comprising:
a fader position storing device that stores respective posi
tions of the faders of the channels,
Wherein the controller:
25
bar graph indicative of the channels so that When the
30
strip portion 30 and the loWer channel strip portion 31, the
level meterblock images being similar to the above-described
level meter block images 21 to 2,".
The audio mixing apparatus is designed such that the sub
top panel 22 is provided on the left of the main top panel 21.
HoWever, the audio mixing apparatus may be designed to
further include a second sub -top panel on the right of the main
35
comprising:
a scene data storing device that stores respective positions
40
the level meter block images being provided on the touch
ing respective fader position markers of the respective
channels indicative of the respective fader positions of
45
lating a mouse to select one of the displayed level meter block
50
comprising:
a channel color storing device that stores colors set for the
channels,
channel block selection by use of the mouse.
What is claimed is:
1. An audio mixing apparatus comprising:
55
Wherein the controller displays the respective indicators in
the respective colors stored for the channels in the chan
nel color storing device.
5. The audio mixing apparatus according to claim 1, further
comprising:
current positions;
a display that displays respective signal levels of the chan
a touch detecting circuit that detects an area Where a user
has touched on the display, the display being a touch
nels as a level meter image;
a signal level storing device that stores the respective signal
levels of the respective channels;
a signal type storing device that stores signal types to be set
for the channels, each signal type indicating Whether a
signal of a channel of the signal type is correlated With
60
that of its neighboring channel to control the channel so
65
that When the signal type of the channel indicates that
there is a signal correlation betWeen the channel and its
the channels stored as the scene data in the scene data
storing device on the respective bars of the bar graph
indicative of the channels, and synthesiZes the generated
images to display the synthesiZed image on the display.
4. The audio mixing apparatus according to claim 1, further
mixing apparatus having no touch panel, hoWever, the user is
able to perform similar channel block selection by manipu
a plurality of faders that control tone volume parameters of
a plurality of channels respectively in accordance With
of the faders of the channels as scene data at the time of
storage of a scene,
Wherein the controller generates an image for superimpos
to have the touch panel display. Even as for a modi?ed audio
images 21 to 2,". Furthermore, even the audio mixing appa
ratus having the touch panel display may alloW the user’s
shape shared With the neighboring channel; and
synthesiZes the generated images to display the synthe
siZed image on the display.
3. The audio mixing apparatus according to claim 1, further
be provided only With the main top panel 21. In a case Where
panel sub-display, the audio mixing apparatus may be pro
vided only With the sub-top panel 22.
The above-described audio mixing apparatus is designed
signal type of the channel stored in the signal type stor
ing device indicates that there is the signal correlation
betWeen the channel and its neighboring channel, the
fader position marker of the channel has a connected
top panel 21. Alternatively, the audio mixing apparatus may
the sub-top panel 22 has the above-described touch panel
sub-display With an assignment selection portion formed of
generates an image for superimposing respective fader
position markers of the channels indicative of respective
current positions of the faders of the channels stored the
fader position storing device on the respective bars of the
and the loWer channel strip portion 31 l to 31 16 so that the user
Will touch one of the level meter block images to select a
channel block Which is to be assigned to the upper channel
siZed image on the display.
2. The audio mixing apparatus according to claim 1, further
panel display; and
a plurality of assignment channel strips,
Wherein the controller generates, as the level meter image,
a plurality of blocks of level meter images each of Which
indicates a corresponding block of the channels divided
into a certain number of blocks, and
Wherein the controller detects a user’s touch of one of the
level meter images displayed on the touch panel display
US 8,351,623 B2
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10. The audio mixing apparatus according to claim 9, fur
on the basis of an output of the detection by the touch
detecting circuit to select a block of channels corre
ther comprising:
sponding to the touched level meter image and assigns
the selected channels to the assignment channel strips,
a scene data storing device that stores respective positions
of the faders of the channels as scene data at the time of
storage of a scene,
respectively.
6. The audio mixing apparatus according to claim 1,
Wherein the controller generates an image for superimpos
ing respective fader position markers of the respective
Wherein:
channels indicative of the respective fader positions of
the signal level storing device comprises a RAM, and
the signal type storing device comprises a ?ash ROM.
7. A non-transitory computer-readable storage medium
the channels stored as the scene data in the scene data
storing device on the respective bars of the bar graph
indicative of the channels, and synthesiZes the generated
images to display the synthesiZed image on the display.
11. The audio mixing apparatus according to claim 10,
storing an audio mixing program executable by a computer to
execute a method of controlling a tone volume parameter of
each of a plurality of channels in accordance With a current
Wherein:
position of a fader of the each channel and to display respec
tive signal levels of the channels as a level meter image on a
the scene data storing device stores a plurality of scene data
display, the method comprising the steps of:
sets, and
the controller generates an image for superimposing the
respective fader position markers of the channels indica
tive of respective positions of the respective faders of the
storing the respective signal levels of the channels into in a
signal level storage device;
storing signal types to be set for the channels in a signal
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type storage device, each signal type indicating Whether
channels stored as part of a scene data set read most
a signal of a channel of the signal type is correlated With
that of its neighboring channel to control the channel so
that When the signal type of the channel indicates that
there is a signal correlation betWeen the channel and its
neighboring channel, the fader of the channel and that of
the neighboring channel are situated at the same posi
recently from the scene data storing device on the
tion; and
generating the level meter image using respective bars of a
bar graph indicative of the respective signal levels of the
channels stored in the signal level storage device;
generating an image indicative of indicators of the chan
respective bars of the bar graph indicative of the chan
nels.
25
ther comprising:
a channel color storing device that stores colors set for the
channels,
Wherein the controller generates an image indicative of
30
nels, respectively, so that the respective indicators cor
respond to the respective bars of the bar graph indicative
of the channels, the indicators being designed so that
When the signal type of the channel stored in the signal
type storage device indicates that there is the signal
correlation betWeen the channel and its neighboring
35
a touch detecting circuit that detects an area Where a user
has touched on the display, the display being a touch
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45
level meter images displayed on the touch panel display
on the basis of an output of the detection by the touch
detecting circuit to select a block of channels corre
50
respectively.
Wherein:
55
generates the level meter image using respective bars of a
bar graph indicative of the respective signal levels of the
current positions of the faders of the channels stored in
the faderposition storing device on the respective bars of
the bar graph indicative of the channels; and
synthesiZes the generated images to display the synthe
siZed image on the display.
sponding to the touched level meter image and assigns
the selected channels to the assignment channel strips,
14. The audio mixing apparatus according to claim 9,
a controller that:
channels stored the signal level storing device;
generates an image for superimposing respective fader
position markers of the channels indicative of respective
Wherein the controller generates, as the level meter image,
a plurality of blocks of level meter images each of Which
indicates a corresponding block of the channels divided
into a certain number of blocks, and
Wherein the controller detects a user’s touch of one of the
nels as a level meter image;
a signal level storing device that stores the respective signal
levels of the respective channels;
a fader position storing device that stores respective posi
tions of the faders of the channels; and
panel display; and
a plurality of assignment channel strips,
a plurality of faders that control tone volume parameters of
a plurality of channels respectively in accordance With
current positions;
a display that displays respective signal levels of the chan
nels, and synthesiZes the generated images to display the
synthesiZed image on the display.
13. The audio mixing apparatus according to claim 9, fur
siZed image on the display.
8. The non-transitory computer-readable storage medium
according to claim 7, Wherein:
the signal level storing device comprises a RAM, and
the signal type storing device comprises a ?ash ROM.
9. An audio mixing apparatus comprising:
respective indicators of the respective colors stored in
the channel color storing device for the respective chan
nels so that the respective indicators correspond to the
respective bars of the bar graph indicative of the chan
ther comprising:
channel, the indicator of the channel has a connected
shape shared With the neighboring channel; and
synthesiZing the generated images to display the synthe
12. The audio mixing apparatus according to claim 9, fur
the signal level storing device comprises a RAM, and
the fader position storing device comprises a ?ash ROM.
15. A non-transitory computer-readable storage medium
storing an audio mixing program executable by a computer to
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execute a method of controlling a tone volume parameter of
each of a plurality of channels in accordance With a current
position of a fader of the each channel and to display respec
tive signal levels of the channels as a level meter image, the
method comprising the steps of:
storing the respective signal levels of the channels in a
signal level storage device;
storing respective positions of the respective faders of the
channels into a fader position storage;
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generating the level meter image using respective bars of a
synthesizing the generated images to display the synthe
bar graph indicative of the respective signal levels of the
siZed image on the display.
channels stored the signal level storage device;
16. The non-transitory computer-readable storage medium
generating an image for superimposing respective fader
according to claim 15, Wherein:
position markers of the channels indicative of respective 5
the signal level storing device comprises a RAM, and
current positions of the respective faders of the channels
stored in the fader position storage device on the respec
tive bars of the bar graph indicative of the channels; and
the fader position storing device comprises a ?ash ROM.
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