ES2176716T3 - STEREOPHONE SOUND DECODER CIRCUIT TO GET SURROUND SOUND, WITH POST-AMPLIFICATION. - Google Patents
STEREOPHONE SOUND DECODER CIRCUIT TO GET SURROUND SOUND, WITH POST-AMPLIFICATION.Info
- Publication number
- ES2176716T3 ES2176716T3 ES97913055T ES97913055T ES2176716T3 ES 2176716 T3 ES2176716 T3 ES 2176716T3 ES 97913055 T ES97913055 T ES 97913055T ES 97913055 T ES97913055 T ES 97913055T ES 2176716 T3 ES2176716 T3 ES 2176716T3
- Authority
- ES
- Spain
- Prior art keywords
- decoding circuit
- stereophonic
- signals
- sound
- post
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Amplifiers (AREA)
Abstract
A post-amplification stereophonic to surround sound decoding circuit is described herein. The decoding circuit includes inputs to be connected to a stereophonic power amplifier to receive a powered amplified stereophonic signal and outputs to be connected to left and right main loudspeakers, to left and right secondary loudspeakers and to a central loudspeaker. The decoding circuit includes secondary channels decoding circuit decoding left and right surround channel signals to be supplied to the left and right secondary loudspeakers, respectively, and a central channel decoding circuit decoding a central channel signal to be supplied to the central loudspeaker. The central channel decoding circuit includes two decoupling capacitors decoupling the left and right signals from the powered amplified stereophonic signal before combining these signals to yield the central channel signal. This decoupling action prevents "bleeding" of the left and right signals that would degrade the stereophonic signal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CA1997/000882 WO1999026455A1 (en) | 1997-11-14 | 1997-11-14 | Post-amplification stereophonic to surround sound decoding circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2176716T3 true ES2176716T3 (en) | 2002-12-01 |
Family
ID=4173249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES97913055T Expired - Lifetime ES2176716T3 (en) | 1997-11-14 | 1997-11-14 | STEREOPHONE SOUND DECODER CIRCUIT TO GET SURROUND SOUND, WITH POST-AMPLIFICATION. |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1064824B1 (en) |
JP (1) | JP2001523937A (en) |
AT (1) | ATE218267T1 (en) |
AU (1) | AU748414B2 (en) |
CA (1) | CA2308576A1 (en) |
DE (1) | DE69712926T2 (en) |
DK (1) | DK1064824T3 (en) |
ES (1) | ES2176716T3 (en) |
WO (1) | WO1999026455A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7551745B2 (en) | 2003-04-24 | 2009-06-23 | Dolby Laboratories Licensing Corporation | Volume and compression control in movie theaters |
US7251337B2 (en) | 2003-04-24 | 2007-07-31 | Dolby Laboratories Licensing Corporation | Volume control in movie theaters |
DE102004043521A1 (en) | 2004-09-08 | 2006-03-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device and method for generating a multi-channel signal or a parameter data set |
SE0402649D0 (en) | 2004-11-02 | 2004-11-02 | Coding Tech Ab | Advanced methods of creating orthogonal signals |
CN104936090B (en) * | 2015-05-04 | 2018-12-14 | 联想(北京)有限公司 | A kind of processing method and audio processor of audio data |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132859A (en) * | 1977-12-02 | 1979-01-02 | Egils Ranga | Sound reproducing apparatus |
JPS54107702A (en) * | 1978-02-10 | 1979-08-23 | Nissan Motor | Automotive stereophonic speakers |
US4382157A (en) * | 1978-07-17 | 1983-05-03 | Kenneth P. Wert, Sr. | Multiple speaker type sound producing system |
US5265166A (en) * | 1991-10-30 | 1993-11-23 | Panor Corp. | Multi-channel sound simulation system |
-
1997
- 1997-11-14 AU AU50453/98A patent/AU748414B2/en not_active Ceased
- 1997-11-14 AT AT97913055T patent/ATE218267T1/en not_active IP Right Cessation
- 1997-11-14 WO PCT/CA1997/000882 patent/WO1999026455A1/en active IP Right Grant
- 1997-11-14 DK DK97913055T patent/DK1064824T3/en active
- 1997-11-14 EP EP97913055A patent/EP1064824B1/en not_active Expired - Lifetime
- 1997-11-14 DE DE69712926T patent/DE69712926T2/en not_active Expired - Fee Related
- 1997-11-14 ES ES97913055T patent/ES2176716T3/en not_active Expired - Lifetime
- 1997-11-14 CA CA002308576A patent/CA2308576A1/en not_active Abandoned
- 1997-11-14 JP JP2000521683A patent/JP2001523937A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
ATE218267T1 (en) | 2002-06-15 |
JP2001523937A (en) | 2001-11-27 |
AU5045398A (en) | 1999-06-07 |
WO1999026455A1 (en) | 1999-05-27 |
EP1064824A1 (en) | 2001-01-03 |
DE69712926T2 (en) | 2002-11-28 |
AU748414B2 (en) | 2002-06-06 |
EP1064824B1 (en) | 2002-05-29 |
DE69712926D1 (en) | 2002-07-04 |
CA2308576A1 (en) | 1999-05-27 |
DK1064824T3 (en) | 2002-09-16 |
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