BG60225B2 - Method and device for sound image formation - Google Patents

Method and device for sound image formation

Info

Publication number
BG60225B2
BG60225B2 BG89664A BG8966489A BG60225B2 BG 60225 B2 BG60225 B2 BG 60225B2 BG 89664 A BG89664 A BG 89664A BG 8966489 A BG8966489 A BG 8966489A BG 60225 B2 BG60225 B2 BG 60225B2
Authority
BG
Bulgaria
Prior art keywords
acoustic
channels
amplitude
electric signal
phase
Prior art date
Application number
BG89664A
Other languages
Bulgarian (bg)
Inventor
Danny D Lowe
John W Lees
Original Assignee
Q Sound 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 Q Sound Ltd filed Critical Q Sound Ltd
Publication of BG60225B2 publication Critical patent/BG60225B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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 
    • H04S1/00—Two-channel systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—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 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/40—Visual indication of stereophonic sound image

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The method and the device are used in audio equipment engineering and secure the formation of sound images in any point of the sound recorded 3-dimetional space. The image depends neither on the location of the sound source, the image of which is formed, nor on the positioning of the loudspeakers. The method includes the conversion of the acoustic monosignal into two-channel electric signal. The signals of both channels are independently manipulated by phase and/or amplitude so that a constant phase and/or amplitude difference is established between them, after which every electrical signal is converted into acoustic. The device consists of acoustic monosignal inverter (26) of the sound source into electric signal (not shown), connected to a two-channel signal processor unit (27.1, 27.2) for independent processing of the signals in the two channels by phase and amplitude, outputs (70, 71) of the signal processor units 27.1, 27.2) being coupled to two independent inverters (1,2) of the electric signal of the two channels into acoustic, and processor units (27.1, 27.2) are connected to a control unit (29).
BG89664A 1988-09-02 1989-08-01 Method and device for sound image formation BG60225B2 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
BG60225B2 true BG60225B2 (en) 1993-12-30

Family

ID=26933039

Family Applications (1)

Application Number Title Priority Date Filing Date
BG89664A BG60225B2 (en) 1988-09-02 1989-08-01 Method and device for sound image formation

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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EP0563929B1 (en) * 1992-04-03 1998-12-30 Yamaha Corporation Sound-image position control apparatus
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
WO1994024836A1 (en) * 1993-04-20 1994-10-27 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
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
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
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
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
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
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
US9088858B2 (en) 2011-01-04 2015-07-21 Dts Llc Immersive audio rendering system
US9823892B2 (en) 2011-08-26 2017-11-21 Dts Llc Audio adjustment system
RU2611563C2 (en) * 2012-01-17 2017-02-28 Конинклейке Филипс Н.В. Sound source position assessment
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
US10511909B2 (en) * 2017-11-29 2019-12-17 Boomcloud 360, Inc. Crosstalk cancellation for opposite-facing transaural loudspeaker systems

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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
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JPS61281799A (en) * 1985-06-07 1986-12-12 Dainabekutaa Kk Sound signal reproducing system
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JP2935266B2 (en) * 1987-05-11 1999-08-16 ジャンポルスキー、アーサー Paradoxical hearing aids

Also Published As

Publication number Publication date
FI894143A0 (en) 1989-09-01
RU2092979C1 (en) 1997-10-10
DK433789D0 (en) 1989-09-01
DE68922885T2 (en) 1995-10-12
JP3205808B2 (en) 2001-09-04
FI894143A (en) 1990-03-03
DE68922885D1 (en) 1995-07-06
AU4100089A (en) 1990-03-08
PL163716B1 (en) 1994-04-29
KR930002147B1 (en) 1993-03-26
EP0357402A2 (en) 1990-03-07
EP0357402B1 (en) 1995-05-31
IL91464A (en) 1994-11-28
CA1329911C (en) 1994-05-31
ATE123369T1 (en) 1995-06-15
AR245858A1 (en) 1994-02-28
HUT59523A (en) 1992-05-28
NO175229C (en) 1994-09-14
JPH02298200A (en) 1990-12-10
ES2075053T3 (en) 1995-10-01
NO893522D0 (en) 1989-09-01
NO893522L (en) 1990-03-05
NZ230517A (en) 1992-10-28
AU621655B2 (en) 1992-03-19
KR900005841A (en) 1990-04-14
EP0357402A3 (en) 1991-10-02
DK433789A (en) 1990-03-03
NO175229B (en) 1994-06-06
IL91464A0 (en) 1990-04-29

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