GB9103207D0 - Stereophonic sound reproduction system - Google Patents
Stereophonic sound reproduction systemInfo
- Publication number
- GB9103207D0 GB9103207D0 GB919103207A GB9103207A GB9103207D0 GB 9103207 D0 GB9103207 D0 GB 9103207D0 GB 919103207 A GB919103207 A GB 919103207A GB 9103207 A GB9103207 A GB 9103207A GB 9103207 D0 GB9103207 D0 GB 9103207D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- matrix means
- feed
- matrix
- channel signals
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H04S2420/11—Application of ambisonics in stereophonic audio systems
-
- 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
- H04S5/005—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 five- or more-channel type, e.g. virtual surround
Abstract
Matrix reproduction decoding means (2) derive from input signals (20) intended to feed a stereophonic plurality of loudspeakers output signals (40) intended to feed a second greater plurality of loudspeakers in a stereophonic arrangement (50) covering a sector (3) of directions, substantially so as to preserve total reproduced energy to within an overall gain and equalisation, and to preserve to within constants of proportionality the angular dispositions of reproduced acoustical velocity and sound intensity vectors at an ideal listening position (4). Preferably for two-channel signals (20) matrix means (2) is frequency-dependent giving increased angular width above 5 kHz, and may incorporate width control. Matrix means encoding loudspeaker feed signals (20) into transmission channel signals, and matrix means decoding transmission channel signals into loudspeaker feed signals (40) may be used giving overall matrix means (2) in accordance with the invention. Matrix means (2) may be used to provide improved directional matching of sounds and associated visual images.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919103207A GB9103207D0 (en) | 1991-02-15 | 1991-02-15 | Stereophonic sound reproduction system |
AT92904564T ATE211600T1 (en) | 1991-02-15 | 1992-02-14 | SOUND PLAYBACK SYSTEM |
PCT/GB1992/000267 WO1992015180A1 (en) | 1991-02-15 | 1992-02-14 | Sound reproduction system |
EP92904564A EP0571455B1 (en) | 1991-02-15 | 1992-02-14 | Sound reproduction system |
JP4504183A JPH06506092A (en) | 1991-02-15 | 1992-02-14 | sound reproduction system |
DE69232327T DE69232327T2 (en) | 1991-02-15 | 1992-02-14 | A sound reproduction |
US08/589,994 US5594800A (en) | 1991-02-15 | 1996-01-23 | Sound reproduction system having a matrix converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919103207A GB9103207D0 (en) | 1991-02-15 | 1991-02-15 | Stereophonic sound reproduction system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB9103207D0 true GB9103207D0 (en) | 1991-04-03 |
Family
ID=10690065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB919103207A Pending GB9103207D0 (en) | 1991-02-15 | 1991-02-15 | Stereophonic sound reproduction system |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0571455B1 (en) |
JP (1) | JPH06506092A (en) |
AT (1) | ATE211600T1 (en) |
DE (1) | DE69232327T2 (en) |
GB (1) | GB9103207D0 (en) |
WO (1) | WO1992015180A1 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5291557A (en) * | 1992-10-13 | 1994-03-01 | Dolby Laboratories Licensing Corporation | Adaptive rematrixing of matrixed audio signals |
DE4440014C2 (en) * | 1994-11-09 | 2002-02-07 | Deutsche Telekom Ag | Method and device for multi-channel sound reproduction |
US6198827B1 (en) | 1995-12-26 | 2001-03-06 | Rocktron Corporation | 5-2-5 Matrix system |
US5771295A (en) * | 1995-12-26 | 1998-06-23 | Rocktron Corporation | 5-2-5 matrix system |
US6697491B1 (en) | 1996-07-19 | 2004-02-24 | Harman International Industries, Incorporated | 5-2-5 matrix encoder and decoder system |
US6711266B1 (en) * | 1997-02-07 | 2004-03-23 | Bose Corporation | Surround sound channel encoding and decoding |
WO1999012386A1 (en) * | 1997-09-05 | 1999-03-11 | Lexicon | 5-2-5 matrix encoder and decoder system |
US6072878A (en) | 1997-09-24 | 2000-06-06 | Sonic Solutions | Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics |
KR100416757B1 (en) * | 1999-06-10 | 2004-01-31 | 삼성전자주식회사 | Multi-channel audio reproduction apparatus and method for loud-speaker reproduction |
EP1275272B1 (en) * | 2000-04-19 | 2012-11-21 | SNK Tech Investment L.L.C. | Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics in three dimensions |
AUPR253601A0 (en) * | 2001-01-12 | 2001-02-08 | Banko, Dinko | Flange aligning tool |
US7490044B2 (en) | 2004-06-08 | 2009-02-10 | Bose Corporation | Audio signal processing |
KR100725818B1 (en) * | 2004-07-14 | 2007-06-11 | 삼성전자주식회사 | Sound reproducing apparatus and method for providing virtual sound source |
US7283634B2 (en) * | 2004-08-31 | 2007-10-16 | Dts, Inc. | Method of mixing audio channels using correlated outputs |
JP4887420B2 (en) * | 2006-03-13 | 2012-02-29 | ドルビー ラボラトリーズ ライセンシング コーポレイション | Rendering center channel audio |
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 |
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 |
US20100331048A1 (en) * | 2009-06-25 | 2010-12-30 | Qualcomm Incorporated | M-s stereo reproduction at a device |
EP2523472A1 (en) | 2011-05-13 | 2012-11-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method and computer program for generating a stereo output signal for providing additional output channels |
US9685163B2 (en) * | 2013-03-01 | 2017-06-20 | Qualcomm Incorporated | Transforming spherical harmonic coefficients |
EP2830332A3 (en) * | 2013-07-22 | 2015-03-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method, signal processing unit, and computer program for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration |
DE202014010599U1 (en) | 2014-01-05 | 2016-02-02 | Kronoton Gmbh | Device with speakers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757763B2 (en) * | 1974-11-29 | 1982-12-06 | Nippon Columbia | |
GB2073556B (en) * | 1980-02-23 | 1984-02-22 | Nat Res Dev | Sound reproduction systems |
US5043970A (en) * | 1988-01-06 | 1991-08-27 | Lucasarts Entertainment Company | Sound system with source material and surround timbre response correction, specified front and surround loudspeaker directionality, and multi-loudspeaker surround |
-
1991
- 1991-02-15 GB GB919103207A patent/GB9103207D0/en active Pending
-
1992
- 1992-02-14 EP EP92904564A patent/EP0571455B1/en not_active Expired - Lifetime
- 1992-02-14 JP JP4504183A patent/JPH06506092A/en not_active Ceased
- 1992-02-14 DE DE69232327T patent/DE69232327T2/en not_active Expired - Fee Related
- 1992-02-14 AT AT92904564T patent/ATE211600T1/en not_active IP Right Cessation
- 1992-02-14 WO PCT/GB1992/000267 patent/WO1992015180A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE69232327D1 (en) | 2002-02-07 |
EP0571455A1 (en) | 1993-12-01 |
ATE211600T1 (en) | 2002-01-15 |
JPH06506092A (en) | 1994-07-07 |
EP0571455B1 (en) | 2002-01-02 |
DE69232327T2 (en) | 2002-08-22 |
WO1992015180A1 (en) | 1992-09-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB9103207D0 (en) | Stereophonic sound reproduction system | |
US4569074A (en) | Method and apparatus for reproducing sound having a realistic ambient field and acoustic image | |
CN100428866C (en) | Multi audio track active matrix audio replay having maximum lateral dissociation | |
US4489432A (en) | Method and apparatus for reproducing sound having a realistic ambient field and acoustic image | |
US4058675A (en) | Loudspeaker system for use in a stereophonic sound reproduction system | |
WO1989000802A1 (en) | Extended imaging split mode loudspeaker system | |
DK1070438T3 (en) | Spatial coding method and low bit rate system | |
CA2301062A1 (en) | A distributed stereo system | |
CA2071708A1 (en) | Audio surround system with stereo enhancement and directivity servos | |
EP0977464A3 (en) | Audio signal processing circuit | |
US2819342A (en) | Monaural-binaural transmission of sound | |
EP0814638A3 (en) | Three-dimensional sound reproducing apparatus and a three-dimensional sound reproduction method | |
US6842524B1 (en) | Method for localizing sound image of reproducing sound of audio signals for stereophonic reproduction outside speakers | |
JPS5577295A (en) | Acoustic reproducing device | |
MY115284A (en) | Switched signal processing circuit | |
US5737427A (en) | Surround sound processor unit | |
JP2000078700A5 (en) | ||
JPH10243500A (en) | Sound field reproducing device | |
EP0249428A3 (en) | Self-powered, portable stereo speaker pillow | |
CA1198683A (en) | Method and apparatus for reproducing sound having a realistic ambient field and acoustic image | |
CA1132460A (en) | Monitor ampliphones | |
SU524334A1 (en) | Device for pseudo quadraphon playback | |
GB1356843A (en) | Stereophonic sound systems | |
JPS63107300A (en) | Receiving system by headphone | |
JPS6228111Y2 (en) |