EP0357402A3 - Sound imaging method and apparatus - Google Patents

Sound imaging method and apparatus Download PDF

Info

Publication number
EP0357402A3
EP0357402A3 EP19890308778 EP89308778A EP0357402A3 EP 0357402 A3 EP0357402 A3 EP 0357402A3 EP 19890308778 EP19890308778 EP 19890308778 EP 89308778 A EP89308778 A EP 89308778A EP 0357402 A3 EP0357402 A3 EP 0357402A3
Authority
EP
European Patent Office
Prior art keywords
sound
signals
playback
sound source
different
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.)
Granted
Application number
EP19890308778
Other languages
German (de)
French (fr)
Other versions
EP0357402A2 (en
EP0357402B1 (en
Inventor
Danny D. Lowe
John W. Lees
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.)
Qsound Ltd
Original Assignee
Qsound Ltd
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
Priority claimed from US07/239,981 external-priority patent/US5046097A/en
Application filed by Qsound Ltd filed Critical Qsound Ltd
Publication of EP0357402A2 publication Critical patent/EP0357402A2/en
Publication of EP0357402A3 publication Critical patent/EP0357402A3/en
Application granted granted Critical
Publication of EP0357402B1 publication Critical patent/EP0357402B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/02Spatial or constructional arrangements of loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S5/00Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S1/00Two-channel systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S1/00Two-channel systems
    • H04S1/002Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S2400/00Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S2420/00Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03Application of parametric coding in stereophonic audio systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/40Visual indication of stereophonic sound image

Abstract

The illusion of distinct sound sources distributed throughout the three-dimensional space containing the listener is possible using only conventional stereo playback equipment by processing monaural sound signals prior to playback on two spaced-apart transducers. A plurality of such processed signals corresponding to different sound source positions may be mixed using conventional techniques without disturbing the positions of the individual images. Although two loudspeakers are required the sound produced is not conventional stereo, however, each channel of a left/right stereo signal can be separately processed according to the invention and then combined for playback. The sound processing involves dividing each monaural or single channel signal into two signals and then adjusting the differential phase and amplitude of the two channel signals on a frequency dependent basis in accordance with an empirically derived transfer function that has a specific phase and amplitude adjustment for each predetermined frequency interval over the audio spectrum. Each transfer function is empirically derived to relate to a different sound source location and by providing a number of different transfer functions and selecting them accordingly the sound source can be made to appear to move.
EP89308778A 1988-09-02 1989-08-30 Sound imaging method and apparatus Expired - Lifetime EP0357402B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US239981 1988-09-02
US07/239,981 US5046097A (en) 1988-09-02 1988-09-02 Sound imaging process
US39898889A 1989-08-28 1989-08-28
US398988 1995-03-06

Publications (3)

Publication Number Publication Date
EP0357402A2 EP0357402A2 (en) 1990-03-07
EP0357402A3 true EP0357402A3 (en) 1991-10-02
EP0357402B1 EP0357402B1 (en) 1995-05-31

Family

ID=26933039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89308778A Expired - Lifetime EP0357402B1 (en) 1988-09-02 1989-08-30 Sound imaging method and apparatus

Country Status (18)

Country Link
EP (1) EP0357402B1 (en)
JP (1) JP3205808B2 (en)
KR (1) KR930002147B1 (en)
AR (1) AR245858A1 (en)
AT (1) ATE123369T1 (en)
AU (1) AU621655B2 (en)
BG (1) BG60225B2 (en)
CA (1) CA1329911C (en)
DE (1) DE68922885T2 (en)
DK (1) DK433789A (en)
ES (1) ES2075053T3 (en)
FI (1) FI894143A (en)
HU (1) HUT59523A (en)
IL (1) IL91464A (en)
NO (1) NO175229C (en)
NZ (1) NZ230517A (en)
PL (1) PL163716B1 (en)
RU (1) RU2092979C1 (en)

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US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system

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IL96553A (en) * 1989-12-07 1994-04-12 Q Sound Ltd Sound imaging system for a video game
CA2077662C (en) * 1991-01-08 2001-04-17 Mark Franklin Davis Encoder/decoder for multidimensional sound fields
JPH05145743A (en) * 1991-11-21 1993-06-11 Ricoh Co Ltd Image producing device
DE69322805T2 (en) * 1992-04-03 1999-08-26 Yamaha Corp Method of controlling sound source position
US6490359B1 (en) * 1992-04-27 2002-12-03 David A. Gibson Method and apparatus for using visual images to mix sound
JP3565846B2 (en) * 1992-07-06 2004-09-15 アダプティブ オーディオ リミテッド Adaptive sound system and sound reproduction system
JP2870562B2 (en) * 1992-11-30 1999-03-17 日本ビクター株式会社 Method of sound image localization control
AU4037693A (en) * 1993-04-20 1994-11-08 Sixgraph Technologies Ltd Interactive sound placement system and process
US5436975A (en) * 1994-02-02 1995-07-25 Qsound Ltd. Apparatus for cross fading out of the head sound locations
US5596644A (en) * 1994-10-27 1997-01-21 Aureal Semiconductor Inc. Method and apparatus for efficient presentation of high-quality three-dimensional audio
US5850453A (en) 1995-07-28 1998-12-15 Srs Labs, Inc. Acoustic correction apparatus
RU2106075C1 (en) * 1996-03-25 1998-02-27 Владимир Анатольевич Ефремов Spatial sound playback system
US5970152A (en) * 1996-04-30 1999-10-19 Srs Labs, Inc. Audio enhancement system for use in a surround sound environment
KR100370413B1 (en) * 1996-06-30 2003-04-10 삼성전자 주식회사 Method and apparatus for converting the number of channels when multi-channel audio data is reproduced
JPH10108300A (en) * 1996-09-27 1998-04-24 Yamaha Corp Sound field reproduction device
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
US6281749B1 (en) 1997-06-17 2001-08-28 Srs Labs, Inc. Sound enhancement system
US6016473A (en) * 1998-04-07 2000-01-18 Dolby; Ray M. Low bit-rate spatial coding method and system
GB2343347B (en) 1998-06-20 2002-12-31 Central Research Lab Ltd A method of synthesising an audio signal
JP3781902B2 (en) 1998-07-01 2006-06-07 株式会社リコー Sound image localization control device and sound image localization control method
GB2342024B (en) * 1998-09-23 2004-01-14 Sony Uk Ltd Audio processing
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
GB2370176A (en) * 2000-08-10 2002-06-19 James Gregory Stanier A simple microphone unit for the vertical localisation and enhancement of live sounds
JP4602204B2 (en) 2005-08-31 2010-12-22 ソニー株式会社 Audio signal processing apparatus and audio signal processing method
JP4637725B2 (en) 2005-11-11 2011-02-23 ソニー株式会社 Audio signal processing apparatus, audio signal processing method, and program
JP4835298B2 (en) 2006-07-21 2011-12-14 ソニー株式会社 Audio signal processing apparatus, audio signal processing method and program
JP4894386B2 (en) 2006-07-21 2012-03-14 ソニー株式会社 Audio signal processing apparatus, audio signal processing method, and audio signal processing program
US9015051B2 (en) 2007-03-21 2015-04-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Reconstruction of audio channels with direction parameters indicating direction of origin
US8290167B2 (en) 2007-03-21 2012-10-16 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and apparatus for conversion between multi-channel audio formats
US8908873B2 (en) 2007-03-21 2014-12-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and apparatus for conversion between multi-channel audio formats
EP2124486A1 (en) * 2008-05-13 2009-11-25 Clemens Par Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal
JP5499513B2 (en) * 2009-04-21 2014-05-21 ソニー株式会社 Sound processing apparatus, sound image localization processing method, and sound image localization processing program
US9154897B2 (en) 2011-01-04 2015-10-06 Dts Llc Immersive audio rendering system
US9164724B2 (en) 2011-08-26 2015-10-20 Dts Llc Audio adjustment system
US9351071B2 (en) * 2012-01-17 2016-05-24 Koninklijke Philips N.V. Audio source position estimation
WO2017211448A1 (en) 2016-06-06 2017-12-14 Valenzuela Holding Gmbh Method for generating a two-channel signal from a single-channel signal of a sound source

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US4152542A (en) * 1971-10-06 1979-05-01 Cooper Duane P Multichannel matrix logic and encoding systems
US4308424A (en) * 1980-04-14 1981-12-29 Bice Jr Robert G Simulated stereo from a monaural source sound reproduction system
EP0142213A1 (en) * 1983-11-17 1985-05-22 Koninklijke Philips Electronics N.V. Apparatus for generating a pseudo-stereo signal

Family Cites Families (3)

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JPS61281799A (en) * 1985-06-07 1986-12-12 Dainabekutaa Kk Sound signal reproducing system
US4759065A (en) * 1986-09-22 1988-07-19 Harman International Industries, Incorporated Automotive sound system
AU625633B2 (en) * 1987-05-11 1992-07-16 Jampolsky, David L. Hearing aid for asymmetric hearing perception

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152542A (en) * 1971-10-06 1979-05-01 Cooper Duane P Multichannel matrix logic and encoding systems
US4308424A (en) * 1980-04-14 1981-12-29 Bice Jr Robert G Simulated stereo from a monaural source sound reproduction system
EP0142213A1 (en) * 1983-11-17 1985-05-22 Koninklijke Philips Electronics N.V. Apparatus for generating a pseudo-stereo signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
US8509464B1 (en) 2006-12-21 2013-08-13 Dts Llc Multi-channel audio enhancement system
US9232312B2 (en) 2006-12-21 2016-01-05 Dts Llc Multi-channel audio enhancement system

Also Published As

Publication number Publication date
DE68922885T2 (en) 1995-10-12
KR930002147B1 (en) 1993-03-26
DK433789A (en) 1990-03-03
DE68922885D1 (en) 1995-07-06
AU621655B2 (en) 1992-03-19
HUT59523A (en) 1992-05-28
AU4100089A (en) 1990-03-08
BG60225B2 (en) 1993-12-30
ATE123369T1 (en) 1995-06-15
PL163716B1 (en) 1994-04-29
AR245858A1 (en) 1994-02-28
ES2075053T3 (en) 1995-10-01
FI894143A0 (en) 1989-09-01
NO175229C (en) 1994-09-14
JPH02298200A (en) 1990-12-10
NO893522D0 (en) 1989-09-01
IL91464A (en) 1994-11-28
NO175229B (en) 1994-06-06
CA1329911C (en) 1994-05-31
EP0357402A2 (en) 1990-03-07
NO893522L (en) 1990-03-05
RU2092979C1 (en) 1997-10-10
KR900005841A (en) 1990-04-14
DK433789D0 (en) 1989-09-01
EP0357402B1 (en) 1995-05-31
JP3205808B2 (en) 2001-09-04
NZ230517A (en) 1992-10-28
IL91464A0 (en) 1990-04-29
FI894143A (en) 1990-03-03

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