Method and apparatus for ambient sound therapy user interface and

Method and apparatus for ambient sound therapy user interface and
(12) Ulllted States Patent
(10) Patent N0.:
Davis, Jr.
(45) Date of Patent:
4,038,499 A *
InverniZZi ....................... .. 174/3
Kanamori et a1.
5,058,170 A
5,219,322 A
5,239,587 A *
Muckelrath ................... .. 381/56
5,260,920 A *
Ide et a1. ......................... .. 369/5
6/ 1993 Weathers
530421 12 A
5’778’083 A
4/1994 Mrklas et al'
7/1998 Godfrey
6,254,527 B1
7/2001 August
6,072,878 A
U-S-C- 154(1)) by 1427 days-
6/2000 MOOIGI
6,366,679 B1
4/2002 Steffen et a1.
6,484,062 B1* 11/2002 Kim .............................. .. 700/90
Appl. No.1 11/163,179
Oct. 7, 2005
Prior Publication Data
US 2006/0153399 A1
Jul. 13, 2006
Related US. Application Data
...................... ..
Subject to any disclaimer, the term of this
tent is extended or ad'usted under 35
(22) Filed:
E2218 er a1~
4,480,146 A *
Louis Fisher Davis, Jr., Omaha, NE
Jan. 21, 2014
7/1977 Yeaple ........................ .. 381/301
2 *
US 8,634,572 B2
Provisional application No. 60/595,408, ?led on Jun.
30, 2005, provisional application No. 60/643,468,
?led on Jan 13’ 2005'
Cool Edit User’s Manual, 1996*
(51) Int‘ Cl‘
H04B 3/00
H04R 3/00
G10L 21/00
G10L 21/04
Primary Examiner * Vivian Chin
Assistant Examiner * Douglas Suthers
(74) Attorney, Agent, or Firm *Mark E. Stallion; Husch
US. Cl.
Blackwell LLP
USPC ............. .. 381/80; 381/77; 381/122; 704/503;
Field of Classi?cation Search
USPC ......... .. 381/124, 56, 57, 92, 80, 301, 368, 77,
381/122; 704/503’ 504
See application ?le for Complete Search history
References Cited
Method and apparatus Comprising a method Of recording
natural sounds With a matched microphone array, recording
the signal on a high resolution recording device including
creating an audio bed, and playing back the recording on a
tuned playback system. The method and apparatus is used to
create or duplicate an ambient sound space for ambient
3,651,286 A *
3,710,034 A
1/1973 Murry
Gorike et a1. ............... .. 381/353
27 Claims, 7 Drawing Sheets
11111 Q ,
E m)
US 8,634,572 B2
Page 2
References Cited
6,535,610 B1
6,608,903 B1
RE38,350 E *
6,782,104 B1
6,845,163 B1
2003/0138106 A1
2003/0185404 Al*
3/2003 Stewart
8/2003 Miyazaki etal.
12/2003 Godfrey ........................ .. 381/92
8/2004 Vieilledent
1/2005 Johnston et al‘
7/2003 Dabringhaus
Milsap .......................... .. 381/77
1993-0001076 B1
The NASA STI Program Of?ce; “3-D Sound for Vlrtual Reallty and
Multimedia,” Publication; Apr. 2000; Introduction/Acknowledg
ments 4 pages, Table of Contents 8 pages, and Publication 234 pages;
National Aeronautics and Space Administration, Ames Research
Center, Moffett Field, California.
* cited by examiner
US. Patent
Jan. 21, 2014
Sheet 1 017
US 8,634,572 B2
\ r\I\."1 \ \JA.
US. Patent
Jan. 21, 2014
Sheet 2 of7
US 8,634,572 B2
US. Patent
Jan. 21, 2014
Sheet 3 of7
US 8,634,572 B2
US. Patent
Jan. 21, 2014
Sheet 4 of7
US 8,634,572 B2
US. Patent
Jan. 21, 2014
Sheet 5 of7
Emom TAvv_vast
25 1
E.H3M2m5 :0
US 8,634,572 B2
US. Patent
Jan. 21, 2014
US 8,634,572 B2
Sheet 6 of7
610 —'
US. Patent
Jan. 21, 2014
Sheet 7 of7
US 8,634,572 B2
0U u:
3 Egg
F I G . 8
] <<] >>
/ 02:15 PM \
US 8,634,572 B2
creating an audio bed, and playing back the recording on a
playback system tuned for the play back space such that the
playback experience mimics the original sound space. The
method and apparatus is used to create or duplicate an ambi
ent sound space for ambient therapy in order to give a patient
a feeling they are actually in the original ambient sound
This application claims the bene?t of US. Provisional
App. Ser. No. 60/595,408 ?led Jun. 30, 2005 and US. Pro
visional App. Ser. No. 60/643,468 ?led Jan. 13, 2005.
recorded space.
The present ambient therapy invention comprises a com
bination of natural sounds, Which in one embodiment can be
for example recorded in a 200'><200' algorithm, in combina
tion With musical parts that spring from sound events in the
natural sounds to address or induce a certain emotional thera
peutic effect. The invention embodies the concept of Psy
choacoustics, Which suggests that an individual believes they
1. Field of Invention
This invention relates generally to a method and apparatus
using ambient sounds for a therapeutic effect and, more par
ticularly, to method and apparatus for duplicating an ambient
sound space.
are Where their ears tell them they are. There are various
elements key to this method of putting the patient and those
attending to the patient at ease by distracting them With a
believable phenomenon including a noise ?oor, a time shift
2. Background Art
There are various audio recording methods and apparatus
and audio playback systems that are intended to mimic the
acoustics of a given space in a space different from the given
and distance algorithm/spatial perception.
There is typically a certain amount of ambient noise sur
rounding us in most of our everyday World. HoWever, from
space for Which the acoustics are being mimicked With a
time to time, there are abrupt high transient spikes in the
recording and playback system. For example, the acoustic
normal pattern of sounds around us that disrupt us, Which are
sometimes referred to as startle sounds. The drone of consis
tency can give an individual the comfort of a sense of Well
being. The present invention is a method of producing a drone
experience When listening to a full orchestra in an open
amphitheatre is different than listening to the same orchestra
in a concert hall, Which is again different than listening to the
of natural sounds With systematic overlays that Will mask
transient noise that is novel over typical sound masking tech
same orchestra in a large convention hall or a recording stu
The acoustics of each venue is different due to the dimen
sions, material of surrounding structures and etc. . . . The 30
acoustic differences are due to the different sound re?ections
and absorptions and etc. . . . Therefore, the sounds emanating
from the orchestra Will have a different sound quality and
?delity to the listener depending on the acoustics of the
venue. If the sounds emanating from an orchestra playing in
any venue are recorded and played back With the standard
recording and play back system, then the music sounds as
received by the listener upon playback does not mimic the
acoustics of the venue. In other Words, the acoustic experi
ence of the listener during playback does not mimic the
Typical surround playback systems are comprised of a set
of ?ve satellite speakers With a sub Woofer and a playback unit
Which poWers the speakers and reads the DVD media. These
type systems have proven fairly simple and can alloW one the
ability to quickly illustrate the program material of the
present invention. In these demonstrations it becomes clear
that the home theater systems could be improved upon in a
project that Would encompass the complete idea of the ambi
ent therapy system. The concept is nota home entertainment
acoustic experience of a live performance being heard by the
system nor a standard surround recording and playback sys
tem nor a scheme or digital signal processing system for
replicating the acoustics of a particular venue.
listener in the original venue.
Some listeners may prefer to hear a rock band in an amphi
left and center channels; left and right rear channels and a
The standard surround sound system includes front right,
subWoofer. The three front channels provide the primary por
tion of the portions of the sound dynamic and the three front
theatre venue and hear a full orchestra in a concert hall.
Methods and systems for recording and playback have been
designed to give listeners that choice When listening to
playback speakers are typically positioned forWard of the
recorded music on a playback system that simulates the
listener. The sub-Woofer is typically dedicated to the loWer
acoustical dynamics of a given type of venue. Some recording
and playback methods have attempted to simulate the acous
tics of famous venues like Carnegie Hall.
There are also various recording methods and systems for
using various musical tracks sometimes combined With natu
frequency sounds and the speaker in the playback system is
usually centrally positioned Within the playback area or room.
rearWard of the listener.
Whereas, the present invention creates a media playback
system that focuses on ambient therapy fundamentals and
embodies the concept by providing a novel recording and
playback method. The ambient sounds are captured by four
independent multidirectional microphones connected on four
separate recording channels and arranged in a 200'><200'
recording array. The four channel playback system Will play
ral or simulated sounds, such as ocean Waves, to induce a
therapeutic or calming effect. HoWever, neither of the above
methods or systems provides for duplicating and/or enhanc
ing a given ambient sound space and playing back in a dif
ferent play back sound space for inducing a therapeutic result.
The invention is a method and apparatus for recording and
playing back of natural and/or enhanced natural sounds to
capture and reproduce and ambient sound space in a different
back the four independently recorded channels on four cor
responding play back channels and speakers. The built in
sound delays created by the independent multidirectional
microphones arranged in a 200'><200' recording array and
sound space in such a manner to cause a therapeutic effect.
The method and apparatus comprises a method of recording
natural sounds With a matched microphone array, recording
the signal on a high resolution recording device including
The left and right rear channels usually provide the secondary
portion of the sound dynamic to provide the sound re?ection
and delay effect and these speakers are usually positioned
other sound dynamics are replicated on the four playback
channels in order to replicate the sound space of the 200'><200'
recording area. The sound or time delay realiZed by the inde
US 8,634,572 B2
pendent microphones during recording is matched and repli
system can also, optionally include a subWoofer channel. The
and smoother integration into existing hospital rooms Which
can’t be freed up for long periods of time for the installation
process. Unlike traditional ceiling mount commercial speak
Ambient Therapy System (ATS) and its components can
ers systems, the ones utiliZed in the present invention can be
function in a hospital recovery room and therapeutic environ
ment. The present invention hoWever is the method of record
loW voltage instead of the industry standard 70V speakers
Which require step up and step doWn impedance matching
transformers to operate. With these particular type of speak
cated by the playback channels and speakers. The play back
ing and playing back and is not speci?cally related to the
electronic components used to implement the method. The
dimensions of the recording array may vary to create and
ers, they have a dispersion pattern for a fairly large coverage
area Which alloWs for making the choice of speaker place
optional sound space.
ment a little easier.
The present invention provides a device to eliminate the
fact that the user is operating a machine, but rather, creates a
World or sound space of audible ambience far removed from
The speakers can be statically mounted Which doesn’t
alloW for physically moving them as Would a Wall mount type
the noises and beeps generated by all the medical related
area is such that being able to adjust the sound ?eld for a
patient’s bed area in a hospital room Won’t be dif?cult. It Will
of speaker With ball and cup mount, but again, the coverage
machinery Which plague the recovery room in a typical hos
pital. The playback system can be designed to be very trans
parent and can alloW the patient to not focus on the fact they
are listening to an audio recording and convince them they
Were someWhere other than a hospital room, in pain, and
recovering from or preparing to enter surgery. Therefore, one
goal is to have equipment that is physically discrete, and
Where there is LoW visual impact of equipment, concealed
and unobtrusive.
The present system provides a user interface that is simple
to operate and is not visually distracting or obtrusive. Along
simply be a matter of locating the speakers in the appropriate
ceiling tiles and adjusting the volume on the individual
speaker channels to balance the program Where a patient’s
head may be laying in the bed. Another aspect of the ceiling
mount type of speaker is its inherent adherence to typical
building plenum space ?re codes. When used With the appro
priate plenum rated speaker Wiring, these speakers easily
exceed any ?re codes that may exist. The speaker, hoWever,
can be mounted in any other appropriate area or can be inte
grated With various furnishings such as beds or end tables
With the playback equipment, the speakers that are the sound
Within a hospital room.
sources for the ambient programs and are concealed, further
The drivers for the speakers are full range devices, Which
alloW for very high ?delity audio Without need for added
?ltering and such to compensate for ine?iciencies in tradi
tional designs. With a single driver of this nature, the cost of
the speaker array is greatly reduced due to the loWer parts
count. In using a full range device, one possible embodiment
of the invention comprises reducing the number of speakers in
alloWing the patient to feel that they aren’t listening to speak
ers, but instead feeling as though they are actually in the
original recorded environment of sound space of the program
being played back. Along With being visually concealed, the
present invention has minimum controls to alloW the maxi
mum amount of user control necessary to playback the ambi
ent sound material.
The system provides a pertinent and effective user inter
face. The user interface comprises a set of input controls that
correspond exactly to the functions needed as Well as a simple
and easy to understand indication and display section for
the surround array to just four instead of ?ve With a sub
prospective hospital clients that may be reluctant to install an
audio system With a subWoofer. The main goal of the speaker
selecting the desired program to be played and the style i.e.
ambience or music only or both, by Which the program is
played back. The playback system can include a touch screen
monitor user interface for selecting the various modes of
operation as Well as programming the play back function. The
playback system can be designed to be able to receive neW
programming When it is available. For example, the ATS
playback system can be designed such that it includes a
removable module that can be returned to the provider of the
array is to convey the spatial relationships and delays present
in the original surround recording space. One focus is to
maintain high quality audio ?delity and the surround image
that is its ?ngerprint.
The ATS playbackbox can be built upon essentially a small
PC motherboard. The unit can contain a hard drive Which Will
hold the ambient programs. There can also be an audio sound
ATS for upgrading. Alternatively the ATS playback system
can include a sWappable hard drive that can be removed and
replace With a hard drive containing neW programming. The
Woofer. This scenario may prove even more attractive for the
ATS playback system can also have a communication link for
upgrading by uploading neW programs via a netWork inter
face, such as for example a Wide Area NetWork (WAN) such
as the intemet.
One embodiment of the playback system architecture
includes a Speaker System that can be designed to match and
replicate the recording array. In order to meet the above
criteria for concealment of the speakers, it is desirable to
utiliZe a suitable device to playback at a ?delity meeting or
exceeding desired requirements for the audio as Well as to
utiliZe a speaker that can be almost hidden When installed.
One embodiment comprises a ceiling mount speaker scenario
that mounts ?ush into a suspended ceiling tile. The speakers
themselves can comprise a magnetically shielded aluminum
cone driver and a back can be utiliZed, Which insulates and
board to Which the computer sends the program data and then
it’s converted to the audible analog ambient program.
Included inside the main chassis of the box there can be the
motherboard, the audio board, the hard drive, the user inter
face, the poWer distribution section and the audio poWer
ampli?er section to drive the speakers. The main poWer to the
box can be supplied by an external poWer supply that plugs
into regular line poWer from a standard 110V Wall outlet and
transforms the poWer doWn to the level needed by the box
itself. The unit can be designed to be loW poWer and extremely
quiet, Which lends itself to the concealment and loW pro?le
criteria for the ambient therapy system. This siZe can be
minimiZed to make it easy to conceal and adapt to the hospital
By constructing the ATS on the infrastructure of the com
puter system, there is the ability to augment the design in the
future to improve upon the features that the unit can contain.
The computer system being utiliZed can also contain a built in
netWork interface. With this interface in place, there is an
ability to build in provisions for upgrading program material
provides the proper cabinet siZe to maximiZe the speaker’s
through the intemet or other Wide area netWork. This Will
make the unit very ?exible and eases the responsibility of the
characteristics. It also alloWs for a much easier installation
end user of having to maintain upgrades.
US 8,634,572 B2
The computer also serves as a liaison to the user by pro
viding the information on the program being played and the
methodby Which it’ s played via the display section in the user
interface. Encompassed in the user interface are the input
controls for the user to select the program, adjust the volume,
etc. For the ATS’s box, the complexity of a typical home
theater system’s user interface can be avoided. One goal is to
keep it as simple as possible and clearly de?ne the functions
For a better understanding of the present invention, refer
ence may be made to the accompanying draWings in Which
FIG. 1 is a basic schematic of a microphone array and record
ing device;
FIG. 2 is a basic schematic of a play back system;
FIG. 3 is a perspective vieW of the microphone protective
for the user so there is minimal ambiguity.
FIG. 4 is a block diagram of the ATS Analog Board;
Within the ATS ’ s case, a small but e?icient poWer ampli?er
can be housed to handle the driving of the speakers in the
surround array. The ampli?ers are tailored speci?c for the
speakers they are driving. This alloWs us to shape the tonal
characteristics imparted by the speaker to alloW for a more
transparent sound source as if the speaker system Weren’t
actually there. The ampli?er can provide for an equalization
FIGS. 5-9 are various user interface screens.
According to the embodiment(s) of the present invention,
various vieWs are illustrated in FIG. 1-9 and like reference
numerals are being used consistently throughout to refer to
like and corresponding parts of the invention for all of the
or tonality adjustment of the output signal driving the speak
ers to compensate for inaccuracies in sound reproduction. For
example, providing an equalization adjustment operable to
The recording algorithm for recording the nature sounds is
also a key aspect of the invention, Which is designed to be
Weatherproof and someWhat animal proof. The height for the
microphone assembles can be about approximately 30" When
they are inserted into the ground. This puts the microphone
position at a little more than about approximately tWo feet
above the ground. The height can vary depending on the
recording environment and the desired result. The top of the
microphone cage can be semi-spherical Which aids in alloW
ing Water to run off and doWn the sides instead of dripping
recording system 100 is shoWn. The preferred embodiment
placed at one of the four (4) corners of the 200'><200' space
Where DimensionA is about approximately 200' and Dimen
sion B is about approximately 200'. The dimension of the
ity that handles our requirements and is able to support an
herein beloW.
record sounds With a built-in time delay betWeen micro
phones for each sound event as de?ned by the 200'><200' array.
Items 110, 112, 114, and 116 are a representation of a
customized cage further ring in Which the microphones are
suspended in a bell and clapper con?guration. The case, or
covering, keeps moisture and debris off the microphone. The
cages can be mounted on porcelain insulators 118. The micro
phones output signals M1, M2, M3, and M4 responsive to
surrounding sounds and representative thereof. The signals
are received into a pre-amp 120 and then monitored and
recorded by the monitor/recording system 122. There is also
preferably a rod 126 placed a proximate distance from the
array for attracting aWay static. The rod is preferably about
approximately 7 ft. in height above ground and is to be placed
ambience catalog on one hard drive in their original uncom
pressed native 48k PCM format and still have space to spare
These and other advantageous features of the present
invention Will be in part apparent and in part pointed out
array can be adjusted to better accommodate a given natural
environment, hoWever, the about approximately 200'><200'
array is preferred in many natural environments, for example
the Woods or forest. The independent microphones Will
operating system other than WindoWs and has the appropriate
The system can be operational for streaming the individual
audio ?les from the hard drive to the sound circuitry for D/A
conversion. One embodiment encloses the Dolby AC3 audio
decoder as it can help compress our ?le system immensely
With no loss of ?delity, and it is in the public domain Which
Will help to loWer the price tag. HoWever, due to the size of
hard drives these days, one may be able to just put the Whole
shoWn in FIG. 1 is about approximately a 200'><200' array
Where four (4) 102, 104, 106 and 108 microphones are each
can have the appropriate combination of computing capabil
Working drivers to run multi-channel audio.
be better understood by referring to the ?gures of the draWing
and the various electronic equipment speci?cation examples
tation of one embodiment of a microphone matrix array and
condensor microphone. A Shure microphone product Which
is less expensive can also be used.
As far as the ATS playback “box” is concerned, the system
desired range for the present invention.
One embodiment of the present invention comprises a
method of recording natural sounds at sound recording loca
tion With a matched microphone array, recording the signal on
a high resolution recording device including creating an audio
bed, and playing back the recording on a tuned playback
system at a separate playback location teaches a novel appa
ratus and method for ambient therapy.
included herein by reference. Referring to FIG. 1, a represen
ground With little or no corrosion. The Windscreens can be a
dampen the Wind noise and at the same time Would be some
What Weather resistant could be utilized to obtain a similar
result. The invention comprises a feature to combat the
mouse/rodent problem that may occur. A braided Wire mesh
cage covers the microphone cabling from the external con
nector on up to and covering the microphone. The micro
phone that can be used internal to the cage is a DPA miniature
examples of performance and operating speci?cations in the
The details of the invention and various embodiments can
into the microphone area. The legs of the cage can be made
from 302 stainless steel so that they can be inserted into the
nylon material much like the material used in the Rycote type
microphones. A number of other materials that Would
various vieWs and ?gures of the draWing. Also, please note
that the ?rst digit(s) of the reference number for a given item
or part of the invention should correspond to the Fig. number
in Which the item or part is ?rst identi?ed. Also, various
electronic equipment speci?cations are provided to illustrate
?atten out the speaker output for more accurate reproduction
of the recorded sound. It can be an equalization adjustment at
the time of mixing and/or designed into an ATS box adjusted
for a speci?c set of speakers.
about 3-4 ft. aWay from array and preferably made of copper.
The gauge and material of the microphone transmission lines
may vary but is preferably selected to minimize signal noise
and interference. The Wind screen 124 is also represented
Which shields the microphone from the Wind.
US 8,634,572 B2
(2) a custom designed “cage” manufactured to suspend the
microphones upside doWn in a bell and clapper con?gu
ration in order to keep moisture from con?icting With the
Referring to FIG. 2, a representation of a tuned and match
speaker array and playback system 200 designed to maximize
the ambient therapy effect is shoWn. There are shoWn four (4)
matched speakers 202, 204, 206, and 208 and an optional
center channel subWoofer 210. The playback system 212
purity of the signal.
plays back the signal through Ampli?er 214, Which generates
signals S1, S2, S3, S4 and C. The center channel can be
A 7 foot solid copper rod can be placed in the ground about
approximately 3-4feet aWay in order to attract any static
optional as indicated.
Ambient therapy is made of 2 major components.
charge that may con?ict With the purity of the signal. The
1. recorded audio softWare
microphone transmission cable is of an appropriate gauge
multi pair Wire, in a shield to block rf interference. The
2. speci?c playback or delivery system
The recording process is done in a microphone con?gura
transmission cable can run 1000' to the microphone preamps,
tion Which is referred to herein as the “4.1” technique. That
means that the play back of the audio goes to 4 matched
then to the monitoring system and a high resolution multi
channel digital audio recorder, Which is a 24 bit, 48 khZ digital
resolution. All 4 channels can be recorded simultaneously.
Once the raW audio is recorded, the time compression takes
place to create the audio “bed”. The digital audio is trans
ferred from the digital audio tapes to a computer based audio
speakers and optionally 1 sub Woofer. Natural sounds of the 4
seasons and other natural sounds such as Waves can be
recorded in this manner With microphone placement being
200'><200' With 200' betWeen all 4 microphones. The playback
system can include four (4) speakers for four (4) channel
playback of sound each corresponding to the sound captured
by each of the four (4) microphone channels and the playback
recording, editing, and playback system for greater ?exibility.
Then, music is custom designed to integrate at speci?c times
on the audio bed based on events triggered by nature sounds
that occur in the ambient sound space. Custom sound effects
may also be created and included to enhance or augment the
system can alternatively include a subWoofer channel for
playback enhancement of loW frequency sound. This is
referred to as the “4.1” technique. HoWever, a “4.0” technique
playback system can also be utiliZed, Which does not include
(3) the cage can be, in turn, mounted on porcelain insula
natural sounds or music content.
a subWoofer channel. The 4.0 or 4.1 technique can be alter
The content of the music can be guided and customized for
natively selected to best satisfy a speci?c playback installa
the purpose of the speci?c intention of each therapy, for
example pain distraction, or child birth. This is an important
component because it addresses the creative process of the
composer being inspired by the natural sounds as it relates to
Once the season or ambient natural sound space is
recorded, comprising several continuous, or sequential, or
random hours of recorded material, the audio “bed” is
reviewed, compressed and edited. Months of recording can be
a purpose driven objective. The natural sound events are used
as a key or trigger to guide the musical overlay in a manner to
achieve the desired target therapeutic effect.
assembled into a 1 hr. format for delivery of the ambient
The microphones used preferably have a speci?cation that
includes a Wide range of audible sounds and are omni direc
tional. For example, there are tWo different brands of micro
phones that have the desired speci?cation. One brand that can
be utiliZed in the set up is Shure brand electret condenser MX
183 type microphones, Which may have permanent installa
The delivery system hardWare is made up of:
(1) a playback unit system
(2) speci?c code Wire
(3) a shielded speaker system
(4) an ampli?cation system
Another hardWare component is the installation and tuning
tion, since they have proven to be more robust in a variety of
Weather conditions.Also, DPA brand 4060 electret condenser
microphones can be utiliZed. Other microphones having simi
lar performance speci?cations can be utiliZed
The microphone pick up pattern can be “omni-directional”
or “omni”. The microphones pickup sounds from all direc
tions. They are small “lavalier” type microphones. The micro
phones receive a Wide variety of audible sounds of the loca
tion Where they are placed. The microphone converts the
The present method and system is not the creation of music
for music sake, or sounds for sounds sake, rather, a creative
process applied to generate and create a speci?c outcome that
has to do With healing, therapy, etc.
of the Ambient Therapy listening room so that the patient
receives the greatest bene?t from this modality of treatment.
The concept and use of the treatment can be used for:
(1) pain distraction
(2) anxiety distraction
(3) transient spike masking for unWanted sounds surround
(via hard Wire, Wireless transmitter, ?ber optics and, etc.) to a
ing the Ambient Therapy rooms “hospital sounds” etc.
One theory is that this distraction, is due to the evolution of
microphone preampli?er. The ampli?ed electrical signal
the Human auditory system Where sound, has the ability to
from each microphone is then manipulated in a number of
address the auditory nerve and suspend belief as to the loca
tion of the individual and may cause various effects like day
audio sound energy to electrical signals that are transmitted
(1) converted to an audio signal for monitoring purposes
(2) modi?ed electronically for content ieiloW frequency
interference, hum removal, etc.
One key feature of the preferred embodiment goes back to
the 200'><200' algorithm or array created at the time of the
recorded “bed”. The listener/patient can be alloWed to men
(3) converted to a digital signal for storage on an appropri
ate high resolution medium (tape, disc, etc.)
These 4 microphone signals are electrically transmitted by
shielded cable under ground to a multi-channel, high resolu
tion digital audio recorder as a storage medium for the raW
audio. The microphone mounts consist of:
(1) a custom designed Wind screen coated With a Water
proof fabric to Weather protect the microphones and
reduce the amount of objectionable Wind noise picked
up by the microphones.
tally place themselves “in a 3 dimensional acoustic space”
because of the present technique. If content Were presented in
a single (mono), or stereo (tWo channel) method, the present
unique 3 dimensional surround component Would not be
present. The therapy results Would likely not be the same if
not presented in surround 4.0, or 4.1.
The musical content addresses the emotional make up,
more speci?cally. The recording process, in conjunction With
hi end equipment in a 200'><200' con?guration, musical con
US 8,634,572 B2
tent speci?cally designed, and a delivery system as a control
for the output of the material are all critical to the method.
The playback system con?guration can take on various
User Interface
embodiments having various performance speci?cations
Display: Noritake dot-matrix vacuum ?uorescent display
Without departing from the scope of the present invention.
Listed beloW are three possible embodiments having varying
Analog Audio section
Analog Level and Trim: Custom designed VCA driven
Front Panel: Custom designed pushbutton key matrix, vol
ume control and trim controls
performance speci?cations.
preamp, 4 channels With main and trim controls
PoWer Ampli?er: Custom designed 4 channeli50 W/4Q
First Embodiment
Computing Platform
custom class D audio poWer ampli?ers
PoWer Supply
Motherboard: VIA EPIA M Mini-ITX motherboard
Processor: VIA C3/EDEN EBGA Processor 600 MHZ
Memory: 512 MB SDRAM DDR-266
Audio Processor: VIA VTl6l6 6 channel AC’97 Codec
CPU PoWer: ITX-PB 200 W Internal ITX PoWer Supply
Audio PoWer: Custom designed multiple output DC supply
System Case
ATS Case: Various cases are being evaluated
Remote Control
Hard Drive: 160 GB Western Digital Caviar, 7200 RPM,
Remote Control: Implementation of a Wireless system
emulated through softWare
8M cache
Speaker System
Optical Storage: 16x DVD ROM
MA/T 6.5" ceiling mount coaxial speaker
Was chosen for its 6-channel audio support and devel
opment tools.
Programming Language: Microsoft Visual Basic Was used
to simulate the front panel display and controls in soft
Third Embodiment
Computing Platform
Motherboard: Cost effective solution that passes all quality
and life testing
Ware to emulate the physical panel.
Audio File Format: Extensible Wave Was utiliZed as it is the
default WindoWs format
User Interface
Front Panel: The CrystalfontZ 633 front panel LCD &
keypad Was chosen for its tWo line LCD display, the 6
button keypad, and its ability to ?t into a drive bay.
Analog Audio section
PoWer Ampli?er: 4 discrete channelsi50 W/4Q custom
class D audio poWer ampli?ers
Speakers: Further experimentation and evaluation of dif
ferent speakers including the Speco Technologies SP-6
Operating System: Microsoft WindoWs XP Professional
Processor: Fanless processor that accompanies the chosen
Memory: Adequate memory to handle all system functions
Audio Processor: Audio codec selected With the chosen
Hard Drive: IBM/Hitachi 2.5" 8 MB cache Enhanced 24/7
Optical Storage: Panasonic Slot Load DVD ROM
PoWer Supply
Operating System: A royalty free Linux OS custom con
CPU PoWer: ITX-PB 200 W Internal ITX PoWer Supply
Audio PoWer: Astrodyne SPUl30-l08 130 W 24V Univer
sal 85-265 VAC Input
?gured for this application.
Programming Language: The C programming language
System Case
investigation of possible encryption scenarios to assist in
copy protection.
ATS Case: ITX-PB ITX Checker Cube Case
Speaker System
Speakers: Speco Technologies SP-6MA/T 6.5" ceiling
mount coaxial speaker
Second Embodiment
under Linux.
Audio File Format: Dolby AC3 multichannel format and
User Interface
Front Panel: Custom designed pushbutton key matrix, vol
ume control and trim controls
Computing Platform
Display: Noritake dot-matrix vacuum ?uorescent display
Motherboard: VIA EPIA MS Mini-ITX
Processor: VIA C3/ EDEN EBGA Processor Fanless
Analog Audio Section
Analog Level and Trim: Custom designed VCA driven
Memory: 512 MB SDRAM DDR-266
Audio Processor: VIA VTl6l6 6 channel AC’97 Codec
PoWer Ampli?er: Custom designed 4 channeli50 W/4Q
custom class D audio poWer ampli?ers
PoWer Supply
Hard Drive: IBM/Hitachi 2.5" 8 MB cache Enhanced 24/7
CPU PoWer: ITX-PB 200 W Internal ITX PoWer Supply
Audio PoWer: Custom designed multiple output DC supply
System Case
Operating System: Microsoft WindoWs XP Professional
ATS Case: A custom case that meets the required feature
Optical Storage: Panasonic Slot Load DVD ROM
needs and visual styling desires.
Was chosen for its 6-channel audio support and devel
opment tools. Also, preliminary Linux migration and
Remote Control
Programming Language: Microsoft Visual Basic is being
Speaker System
used to simulate the front panel display and controls in
softWare to emulate the physical panels and test out neW
features as they are requested.
Audio File Format: Dolby AC3 multichannel format and
investigation of possible encryption scenarios to assist in
copy protection.
Remote Control: Implementation of the physical counter
part from the emulated system tested through softWare.
Speakers: Full range ceiling mount coaxial speaker that is
magnetically shielded The above embodiments are
merely illustrative examples of hoW the system can be
implemented. HoWever, the speci?c components may
vary Without departing from the scope of the invention.
US 8,634,572 B2
Referring to FIG. 4, the ATS analog board’s primary func
tion is to take the loW level analog audio output signals from
the ATS’s CPU motherboard and provide adequate ampli?
is capable of being upgraded to become softWare controlled.
This alloWs for future implementation of softWare controlled
volume functions including preset volume levels for recalling
cation to those signals in order to drive an array of loudspeak
ers. The design for the Voltage Controlled Ampli?er (VCA)
in speci?c scenarios.As Well, a Wireless remote control canbe
added to the system With relative ease Without redesigning the
based preampli?er design can include one master control and
entire preampli?er circuitry.
individual trim controls 404, 406, 408, 410 for each channel
403, 405, 407, 409. The ATS is a multichannel audio output
The audio signal from the CPU motherboard is transmitted
to the ATS analog board and When the audio signal is receive
by the ATS analog board it is input to the VCA ampli?er. This
device. This means that there are multiple discrete channels of
audio running simultaneously that need to be controlled
can be seen in FIG. 4. The audio signal’s exiting current level
simultaneously in some reasonable fashion. One embodiment
from the VCA or gain through the ampli?er is controlled by a
of the ATS analog board is described in detail beloW, hoWever,
the analog board design can vary Without departing from the
scope of the present invention.
The traditional approach is to utiliZe a stacked potentiom
eter style volume control, essentially four volume controls
sandWiched together and operated from a single mechanical
rotation. This approach is loW tech, but very reliable. HoW
linear DC control voltage, Which then corresponds to an over
all logarithmic throughput from the VCA. There are tWo
sources of control voltage for each channel’s VCA on the
ATS’s analog board. These sources can be seen in FIG. 4.
The #1 source of control voltage can be from the main
volume control. This can include a single potentiometer that
generates a control voltage based upon Where the position of
the volume control is located. It can be arranged so that
ever, there are shortcomings. The ?rst and foremost is the fact
that the individual channels cannot be trimmed slightly as all
the pots are bonded together. With the ATS, it is necessary to
control all four channels simultaneously, but also have the
ability to trim each channel unique to accommodate potential
mismatches in the placement of the speakers in the end instal
lations. Therefore, With the above criteria, the analog board
Was designed using a voltage controlled ampli?er. Essen
tially, the VCA is a sort of supervisory potentiometer that Will
change the gain through it via a simple direct current control
together and driven from one central control source as Well as
being individually trimmed.
?er instead of actually being transferred to the speaker load.
Due to the nature of attempting to control current to a load in
a linear fashion, this particular effect is unavoidable. What a
sWitching poWer ampli?er does is to Waste very minimal
amount of current that is consumed by the poWer ampli?er’s
internal output devices and send nearly all of the current to the
load. This is accomplished by simply not alloWing the output
accommodate possible differences in the speaker volumes at
the listening position because of possible obstructions in the
room or feW choices With Which to install the speakers. This
control is simply a linear control that can span roughly over
about a 30 dB range, +/— l 5 db of gain or attentuation. The tWo
control voltage sources can then be summed 424 to produce a
design topography for the poWer ampli?er that Would be
reasonably ef?cient and not generate excessive heat. The
poWer ampli?er section in the ATS is What is termed a sWitch
ing poWer ampli?er or class D style ampli?er 420. In conven
tional audio poWer ampli?ers, much of the ine?iciencies are
consumed by having a certain amount of the available elec
trical current turned to heat in the output devices of the ampli
The #2 source of control voltage is from an individual trim
control. The interface to this control can be situated on the
rear of the ATS unit and can alloW the system installer to
adjust the individual gains on the channels of the ATS to
The ef?cient audio poWer ampli?cation for driving typical
loW impedance loudspeakers can be implemented because
the ATS Would be located in sometimes small and compact
equipment shelves or closets, it Was necessary to adopt a
range of gain. The control can be designed such that at about
1 o’clock on the volume control, the slope of the gain
decreases and so a larger movement on the control produces
a much smaller shift in gain. This can help alleviate a possible
accident if a person should rotate the control too high too
voltage. By constructing each channel identically With aVCA
preampli?er 412, 414, 416, 418, each channel can be linked
clockWise rotation Will produce a positive gain through the
VCA. This particular control voltage ampli?er can also be
con?gured to give a dual slope response. When the unit is
operated at loW levels, the volume control Will effect a larger
single control voltage Which is fed into the VCA. Each chan
nel has its oWn unique trim control and summing With the
main volume control voltage to produce a unique control
voltage for each channel. After the audio current exits the
VCA section, it is then fed directly into the poWer ampli?ca
tion section. See FIG. 4 for a vieW of the poWer ampli?er
The output ofVCA can be injected into the poWer ampli?er
section. The poWer ampli?er can be based on a class D style
pulse Width modulating scenario. The incoming audio can be
modulated With a high frequency triangle Waveform and a
devices to have a linear response, but more of a discrete and
pulse Width modulated output can be fed into a series of
binary response. Either the output devices are fully on and
conducting or they are off and not conducting current to the
The ATS play back system implements a master mute
transistors controlling the current delivered to the speaker
load. The output scenario is What’s termed a differential or
balanced bridge output. This means that there is no solid
control, Which governs all channels simultaneously. As part
opposite in phase and act as a sort of push-pull on the speaker
load. This alloWs the ampli?er to produce a net voltage output
across the load that is nearly double What can be achieved
of the analog board’s functions, a master mute 422 control
can be incorporated to facilitate the need to abruptly mute the
audio should there be a reason for the end user to do so. This
function is simply enabled by depressing a pushbutton Which
alone by running the ampli?er in a single ended mode.
The poWer ampli?er can have shutdoWn protection cir
Will toggle the audio ampli?er into a state of mute. With
another sub sequent press of the button, the mute circuitry Will
cuitry embedded into the design that Will shut the ampli?er
be disengaged and the audio ampli?er Will function normally.
The analog board can be designed With ?exible topography
for the inclusion of a softWare controlled volume control for
ground reference With a single-ended ?uctuating output. But
instead, there are symmetrically opposite signals that are
doWn in case of a fault in the speaker load or over exertion of
the ampli?er. Also included, can be circuitry that Will effec
tively shut the poWer ampli?er doWn amounting to a mute
recalling preset level scenarios and remote control implemen
function. This function can be embedded into the ampli?er
tation. With incorporating a VCA based preampli?er, the ATS
section directly With discrete circuitry instead of being soft
US 8,634,572 B2
ware controlled in the program that runs the ATS. The mute
circuit can toggle its state from the input from the user on a
to access and load, the user simply presses the ?ashing down
load button. When the download is complete, the “Loaded”
button will ?ash to indicate that it has been successfully
downloaded to the playback system. The Loaded button can
be adapted to ?ash for 2 weeks to indicate download in case of
pushbutton switch. A single button push will shut down all
four ampli?ers on the analog board. The state will stay latched
until the user again depresses the pushbutton and the mute
circuit will reactivate the ampli?ers.
All of the functions described above for the ATS analog
board function together harmoniously as a whole to produce
staff changes during load function.
An example of the applicability of the ATS playback sys
tem is its use in a hospital environment for pain distraction.
For example the user has a patient that has pain from hip
surgery. In this excruciating state, some medical research has
shown that the patient can feel trapped in their thoughts and
mind. It apparently can be di?icult or nearly impossible to
escape such feelings. A distraction can be achieved by playing
“SUMMER SONG” Ambience and Music to place the patient
a single board, four channel preampli?er/power ampli?er
solution speci?c to the requirements of the ATS player. The
speci?c details of the design of the board may vary without
departing from the scope of the present invention.
The user interface of the present invention can include and
LCD touch screen monitor, refer to FIG. 5 and display driver
were the user interface screen presentations are provided by
the ATS software user interface application. Software appli
cations for generating such user interfaces is well known to
those skilled in the art. The user interface application can be
in a summer thunder storm. The concept is that humans hear
this music in a couple of levels. The natural sounds such as for
example thunder, rain drops striking hard surfaces, and wind
can create an evolutionary awareness of exactly where we
might be, and as the music portions begin, that part addresses
operable to implement various features including the follow
ing features.
a more “executive” function of the brain. The music overlay is
composed by using the natural sound events as a guide or
Referring to FIGS. 6-9, many of the user interface screens
including the main menu interface screen 600 includes a
trigger such that the music naturally ?ows with the natural
program display window 602 that displays the title of the
program and track being played, the program and track iden
ti?cation numbers. Program and Track Forward and Back
ward Skip Button 604 and, are also provided on the main
cept is that pain signals move slower than auditory signals, so
in theory, the “ear-gate” function of the body can distract the
individual from one signal to another. The compression and
sounds without over shadowing the natural sounds. The con
editing of several hours of natural sound into a more brief
format such as for example a one-hour format ?oods the
human ear gate with a sound bed that dominates and distracts
menu, which allows the user to skip forward to the next
program or track or skip backward to the previous program or
track. STOP-GO-PAUSE-REPEAT buttons are also provided
606. The repeat function when selected repeats the current
program or track being played. Three ambience modes 608
the mind of the listener. Thus, one month of sound recordings
30 in a wooded forest area can be edited to a 1-hour format
saturated with autumn sound events such as for example
blowing leaves across and over a grassy area the sound events
are provided, as there are 3 ways to listen to any ambience title
and they areil.) ambience with music; 2.) ambience only;
can be utiliZed as a trigger for the customly composed musical
3.) music only. The ambience refers to natural sound
The main menu also provides a push button for selecting
To program a selection the user can go to main screen
program and choose a program, for example AUTUMN
Chain programming 610. The Chain programming option
SONG with the arrow keys to right of the program display
refers to “chaining” one program to another, refer to FIGS.
8-9. This can be done with any of the 3 ambience mode
functions. An example of a chain is NIGHT SONG/Ambi
ence Only chain to SUMMER SONG/ Music Only chain to
window. The user can utiliZe the “mode” button and select
simply hit the repeat button and it will repeat the program
until the user manually hits stop; 2.) “chain” this program to
another version of the program i.e.: music only, or ambience
only. or chain it to an entirely different program (bird song for
BIRD SONG /Ambience and Music. A program corresponds
to an ambience title, which includes ambience with music,
ambience only and music only. Programs refer to the pro
grams or titles loaded in memory. When a program is selected
for play, the names show up in main program display window,
top-center. In order to search for and ?nd a program, the
Forward and Backward “Skip” < > buttons on program func
tion next to the window can be utiliZed to page through the list
of programs available. The Prev and Next Track buttons allow
and designated as chain 1 of x. to addAUTUMN SONG as the
the right of the main function buttons has “set”. The program
start can be set just like an alarm clock.
chosen program. This capability can be used for “biorhythm
reset” in an individual when losing track of day-night. The
select am or pm
appropriate for the start time selected.
chose the hour and min.
push on and
to deactivate this function, chose off. this can be done on
big “set” window, or on main screen in timer window
The New Download indicator 614 can allow the user know
when ethemet down loads are available. When the Down
(off-on to the right side) red is a function of “stop”.
Load indicator light is ?ashing, it indicates that a new pro
system can access new programs via a communication port or
network to a wide area network or local area network. In order
main timer window opens
programs. The purpose of the timer function is to auto start a
gram is available to download. The ambient therapy playback
?rst link in the chain select add, and repeat this for every
program link in the chain; 3.) once the chain sequence has
been input, if the user wants this “chain” to start at a speci?c
time, the user can select the “timers” function. The prompt to
the sub?le of recording segment within a program or title.
The main menu also provides a Timers button 612 for
timer function allows the user to select a preset start time for
a given program or chain, where the program or chain is
example). To create a chain, the user will select the chain
button at which time the chain set-up screen will appear with
AUTUMN SONG displayed in the program display window
you to page through tracks in a program were a track refers to
selecting the timer option, refer to FIG. 7. The timer function
is an alarm clock type function for setting start times for
Ambience With Music and hit play. If the user chooses to
extend the experience, the user can do several things: 1.)
1. there are 2 timers. am and pm. a timer function is a
function of “go” so it is green. (green light go).
2. there are 6 chains possible with 2 timers possible per
chain, so in total: 12 timers possible.
US 8,634,572 B2
3. The ambient therapy system as recited in claim 1 Where
Another example is a scenario Were the patient is delusion
ary With loss of awareness of day-night. The user can try to
each microphone is omni-directional lavalier type micro
reset the patients biorhythm by using the timer function in
phones and is covered With a protective cage as the support
conjunction With a speci?c program sequence:
I. chose bird song ambience only
frame and a Wind shield.
4. The system as recited in claim 3 Where the protective
add to chain then
chain to bird song ambience With music
cage is mounted on ceramic insulator.
activate timer and set for (7 am)
comprising a static attracting rod space proximately outside
press on
the array.
6. The ambient therapy system as recited in claim 1 further
5. The ambient therapy system as recited in claim 1 further
the purpose here is that in our duality of hearing, We are
comprising a four channel ambient therapy playback system
including electronic storage for storing the program and a
four channel ampli?er With four outputs con?gured to drive
four speakers for playback of the single hour format program.
sloWly Waking the patient With the sound of morning
birds in our evolutionary hearing then adding higher
“executive function” hearing With the addition of the
music this sequence is approx. 2 hrs. and ramps up.
add to chain
7. The ambient therapy system as recited in claim 6 Where
the four channel ampli?er includes a voltage controlled
chain night song ambience With music to night song ambi
ampli?er based pre-ampli?er design and said four speakers
2. choose night song “ambience With music”
are four full range loW voltage coaxial speakers.
ence only
activate timer and set for (10 pm)
The purpose here is to sloW doWn activity in a similar
computer system con?gured to store and retrieve pro
grams containing multiple continuous hours of elec
tronic recordings compressed into a single hour format
manner as the am sequence.
The various method and system ambient therapy examples
shoWn above illustrate a novel concept for ambient therapy. A
user of the present invention may choose any of the above
ambient therapy embodiments, or an equivalent thereof,
depending upon the desired application. In this regard, it is
recogniZed that various forms of the subject ambient therapy
method and system could be utiliZed Without departing from
the spirit and scope of the present invention.
As is evident from the foregoing description, certain
aspects of the present invention are not limited by the particu
lar details of the examples illustrated herein, and it is therefore
contemplated that other modi?cations and applications, or
ing four independent multi-directional microphones
suspended in upright support frames, Where each inde
pendent microphone has an independent microphone
signal that is independently recorded independent of any
other microphone signal and each of said microphones
are independent of any other microphone and arranged
symmetrically about a center point of the rectangular
array and each microphone position at one of the four
corners of the array.
sure, the example speci?cations and the appended claims.
9. The playback system as recited in claim 8 Where the
speakers are loW voltage, full range and coaxial speakers.
What is claimed is:
10. The playback system as recited in claim 9 Where the
speakers are mountable in the ceiling.
11. The playback system as recited in claim 9 Where the
speakers are mounted in the fumiture.
prising a netWork interface con?gured to upload music.
13. The playback system as recited in claim 8 Where the
a rectangular array of microphones comprising four inde
pendent multi-directional microphones suspended in
upright support frames and each of saidmicrophones are
independent of any other microphone and arranged sym
an audible analog program for channeling the analog
program to an ampli?er having four channels for driving
a speaker array including four speakers, one speaker per
channel Whereby the four speakers reproduce the sound
tion can be obtained from a study of the draWings, the disclo
1. An ambient therapy recording and playback system
to and from an electronic storage device and further
control an audio sound board to receive the programs
retrieved from the electronic storage device and to fur
ther control said sound board to convert the program to
received at a rectangular array of microphones compris
equivalents thereof, Will occur to those skilled in the art. It is
accordingly intended that the claims shall cover all such
modi?cations and applications that do not depart from the
sprit and scope of the present invention.
Other aspects, objects and advantages of the present inven
8. An ambient therapy playback system comprising:
a computer system controlled by a user interface on said
press on
12. The playback system as recited in claim 8 further com
metrically about a center point of the rectangular array
ampli?er is a voltage controlled ampli?er base pre-ampli?er
and each microphone position at one of the four corners
of the array;
microphone signal from one of the independent micro
design, having one master control for all channels and one
trim control per channel Where the master control and each
trim control is summed for each channel.
14. The playback system as recited in claim 13 Where the
phones independent of any other microphone signal for
receiving sounds captured by the microphone, and fur
ampli?er comprises a differential sWitching D-style pulse
Width modulating poWer ampli?er.
a recording system having four independent recording
channels Where each channel receives an independent
ther having an electronic storage electronically record
ing each channel’s captured sounds; and
an electronic editing system con?gured to compress mul
tiple continuous hours of electronic recordings into a
single hour format program.
2. The ambient therapy system as recited in claim 1 Where
the microphones are arranged in a 200 ft. by 200 ft. rectan
gular array With the microphones positioned at the comers of
the array.
15. The playback system as recited in claim 14 is further
comprising a master mute control for all channels.
16. Method for recording and playing back therapeutic
audio comprising the steps of:
capturing natural sounds With a rectangular array of micro
phones suspended in upright support frames and said
microphones comprising four independent omni-direc
tional microphones arranged symmetrically about a cen
ter point of the rectangular array Where each microphone
US 8,634,572 B2
is independent of any other microphone and each posi
program to an audible analog program for channeling
the analog program to an ampli?er having four channels
tioned at one of the four corners of the array;
outputting four independent signals, one from each of the
four microphones, Where said signals are representative
of the natural sounds captured;
for driving a speaker array including four speakers, one
speaker per channel Whereby the four speakers repro
duce the sound received at the rectangular array of
receiving and recording the four independent signals
microphones comprising four independent multi-direc
tional microphones suspended in upright support frames
simultaneously each independent of any other micro
phone signal With an independent four channel record
ing device creating a four channel sound bed;
electronically editing and compressing the natural sounds
and said microphones are independent of any other
microphone and arranged symmetrically about a center
point of the rectangular array and each microphone posi
captured into a 1 hour format;
creating a 1 hour ambient program format by composing a
tion at one of the four corners of the array, and channel
ing the analog program to the ampli?er and driving the
speaker array.
musical overlay Where the motivation of the composi
tion is triggered by natural sound events in the sound
21. The method for recording and playback as recited in
claim 20, Where the speakers are loW voltage, full range and
making the musical overlay part of the ambient program by
super imposing the musical overlay over the natural
sound’s recorded sound bed.
17. The method for recording and playback as recited in
claim 16, Where the rectangular array of microphones is a
200'><200' square array and Where the microphones are omni
coaxial speakers.
22. The method for recording and playback as recited in
claim 20 further comprising the steps of installing the play
claim 20 further comprising the steps of installing the play
claim 16, further comprising the step of:
providing a static attracting rod spaced proximately adja
cent outside the array.
20. The method for recording and playback as recited in
back system in a room and mounting the speakers in furniture.
24. The method for recording and playback as recited in
claim 20 further comprising the step of:
providing a netWork interface function in the playback
system con?gured to upload neW programs.
25. The method for recording and playback as recited in
claim 20 further comprising the step of:
controlling the ampli?er With a master control for all chan
nels and a trim control for each individual channel.
claim 16, further comprising the steps of:
26. The method for recording and playback as recited in
providing a playback system comprising a computer sys
tem controllable by a user interface Where said computer
system is con?gured to store and retrieve programs to
and from an electronic storage device and further control
an audio sound board to receive the programs retrieved
from the electronic storage device and sent by the com
puter and further control said sound board to convert the
23. The method for recording and playback as recited in
directional lavalier type microphones.
18. The method of recording and playback as recited in
claim 17 further comprising the steps of:
providing a protective cage as the support frame surround
ing the microphone and a Windshield over the cage.
19. The method for recording and playback as recited in
back system in a room and mounting the speakers in the
claim 20 further comprising the step of: selectively muting all
four channels.
27. The method for recording and playback as recited in
claim 20, Where the ampli?er includes a differential sWitch
ing D-style pulse With modulating poWer ampli?er.
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