AU3427393A - Stereophonic manipulation apparatus and method for sound image enhancement - Google Patents

Stereophonic manipulation apparatus and method for sound image enhancement

Info

Publication number
AU3427393A
AU3427393A AU34273/93A AU3427393A AU3427393A AU 3427393 A AU3427393 A AU 3427393A AU 34273/93 A AU34273/93 A AU 34273/93A AU 3427393 A AU3427393 A AU 3427393A AU 3427393 A AU3427393 A AU 3427393A
Authority
AU
Australia
Prior art keywords
signals
listener
stereophonic
boundaries
perceived
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU34273/93A
Inventor
Stephen W Desper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Desper Products Inc
Original Assignee
Desper Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Desper Products Inc filed Critical Desper Products Inc
Priority claimed from PCT/US1992/011335 external-priority patent/WO1994016537A1/en
Publication of AU3427393A publication Critical patent/AU3427393A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Endoscopes (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The manipulation system and apparatus receive electronic signals which are to be processed as enhanced stereophonic audio signals from two laterally spaced loudspeakers in front of the listener, either directly before recording or broadcasting, or after recording, or after being broadcast. The system and apparatus process those signals to produce a conditioning signal, such as which would be produced by virtual room boundaries, which is heard together with the original signals so that an enlarged listening area is perceived by the listener. By amplitude and phase control of the signal to the two loudspeakers, the system and apparatus provide a means for control over the enhanced sound field. This enhanced sound field is perceived by the listener as being contained within boundaries larger than those normally reproduced by stereophonic speakers. The system and apparatus generate a conditioning signal for the enhancement of natural, and generation of artificial, spatial qualities present in stereo signals usually masked in the acoustic environment in which reproduction takes place, through generation of phantom boundaries. The apparatus can monitor its own output and shut down or reduce the effects if the output contains qualities that cannot be broadcast. The apparatus provides self-adjustment in the electronic system to maintain spatial masking reversal at a constant value regardless of program material.
AU34273/93A 1992-12-31 1992-12-31 Stereophonic manipulation apparatus and method for sound image enhancement Abandoned AU3427393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1992/011335 WO1994016537A1 (en) 1990-01-09 1992-12-31 Stereophonic manipulation apparatus and method for sound image enhancement

Publications (1)

Publication Number Publication Date
AU3427393A true AU3427393A (en) 1994-08-15

Family

ID=22231683

Family Applications (3)

Application Number Title Priority Date Filing Date
AU34273/93A Abandoned AU3427393A (en) 1992-12-31 1992-12-31 Stereophonic manipulation apparatus and method for sound image enhancement
AU60811/94A Abandoned AU6081194A (en) 1992-12-31 1993-12-30 Sound image manipulation apparatus and method for sound image enhancement
AU77310/98A Abandoned AU7731098A (en) 1992-12-31 1998-07-14 Sound image manipulation apparatus and method for sound image enhancement

Family Applications After (2)

Application Number Title Priority Date Filing Date
AU60811/94A Abandoned AU6081194A (en) 1992-12-31 1993-12-30 Sound image manipulation apparatus and method for sound image enhancement
AU77310/98A Abandoned AU7731098A (en) 1992-12-31 1998-07-14 Sound image manipulation apparatus and method for sound image enhancement

Country Status (10)

Country Link
EP (1) EP0677235B1 (en)
JP (1) JPH08509104A (en)
CN (1) CN1091889A (en)
AT (1) ATE183050T1 (en)
AU (3) AU3427393A (en)
CA (1) CA2153062A1 (en)
DE (1) DE69325922D1 (en)
IL (2) IL104665A (en)
SG (1) SG70557A1 (en)
WO (1) WO1994016538A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6091894A (en) * 1995-12-15 2000-07-18 Kabushiki Kaisha Kawai Gakki Seisakusho Virtual sound source positioning apparatus
US5995631A (en) * 1996-07-23 1999-11-30 Kabushiki Kaisha Kawai Gakki Seisakusho Sound image localization apparatus, stereophonic sound image enhancement apparatus, and sound image control system
KR100206333B1 (en) * 1996-10-08 1999-07-01 윤종용 Device and method for the reproduction of multichannel audio using two speakers
US5912976A (en) * 1996-11-07 1999-06-15 Srs Labs, Inc. Multi-channel audio enhancement system for use in recording and playback and methods for providing same
JP3740670B2 (en) 1997-05-20 2006-02-01 株式会社河合楽器製作所 Stereo sound image magnifier
AU9785498A (en) * 1997-10-14 1999-05-03 Crystal Semiconductor Corp. Single-chip audio circuits, methods, and systems using the same
US6373954B1 (en) 1997-10-14 2002-04-16 Cirrus Logic, Inc. Single-chip audio circuitry, method, and systems using the same
JP2001069597A (en) 1999-06-22 2001-03-16 Yamaha Corp Voice-processing method and device
US7031474B1 (en) * 1999-10-04 2006-04-18 Srs Labs, Inc. Acoustic correction apparatus
US7277767B2 (en) 1999-12-10 2007-10-02 Srs Labs, Inc. System and method for enhanced streaming audio
US6937737B2 (en) * 2003-10-27 2005-08-30 Britannia Investment Corporation Multi-channel audio surround sound from front located loudspeakers
CN107071657A (en) * 2005-01-13 2017-08-18 环境医疗有限责任公司 Situational therapy is recorded and playback system and record and the method for playback treatment audio
EP1801786B1 (en) * 2005-12-20 2014-12-10 Oticon A/S An audio system with varying time delay and a method for processing audio signals.
US8045717B2 (en) * 2006-04-13 2011-10-25 Media Tek Inc. Stereo decoder and method for processing pilot signal
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
WO2012094335A1 (en) 2011-01-04 2012-07-12 Srs Labs, Inc. Immersive audio rendering system
CN103152671B (en) * 2013-03-15 2016-09-28 珠海市杰理科技有限公司 Audio input/output circuit
KR102294192B1 (en) * 2014-06-26 2021-08-26 삼성전자주식회사 Method, apparatus and computer-readable recording medium for rendering audio signal
WO2016169608A1 (en) 2015-04-24 2016-10-27 Huawei Technologies Co., Ltd. An audio signal processing apparatus and method for modifying a stereo image of a stereo signal
CN105407443B (en) * 2015-10-29 2018-02-13 小米科技有限责任公司 The way of recording and device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630298A (en) * 1985-05-30 1986-12-16 Polk Matthew S Method and apparatus for reproducing sound having a realistic ambient field and acoustic image
US4748669A (en) * 1986-03-27 1988-05-31 Hughes Aircraft Company Stereo enhancement system
US5056149A (en) * 1987-03-10 1991-10-08 Broadie Richard G Monaural to stereophonic sound translation process and apparatus
JP2854306B2 (en) * 1988-11-05 1999-02-03 四一 安藤 Sound reproduction device
US5153362A (en) * 1989-10-04 1992-10-06 Yamaha Corporation Electronic musical instrument having pan control function

Also Published As

Publication number Publication date
EP0677235B1 (en) 1999-08-04
EP0677235A1 (en) 1995-10-18
CA2153062A1 (en) 1994-07-21
AU6081194A (en) 1994-08-15
IL122164A0 (en) 1998-04-05
IL104665A0 (en) 1993-06-10
CN1091889A (en) 1994-09-07
DE69325922D1 (en) 1999-09-09
JPH08509104A (en) 1996-09-24
ATE183050T1 (en) 1999-08-15
WO1994016538A1 (en) 1994-07-21
SG70557A1 (en) 2000-02-22
AU7731098A (en) 1998-10-01
IL104665A (en) 1998-10-30

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