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
Application number
ES97913055T
Other languages
Spanish (es)
Inventor
Martin Pineau
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.)
WAVES USA Inc W
Original Assignee
WAVES USA Inc W
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 WAVES USA Inc W filed Critical WAVES USA Inc W
Application granted granted Critical
Publication of ES2176716T3 publication Critical patent/ES2176716T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
ES97913055T 1997-11-14 1997-11-14 STEREOPHONE SOUND DECODER CIRCUIT TO GET SURROUND SOUND, WITH POST-AMPLIFICATION. Expired - Lifetime ES2176716T3 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CA2308576A1 (en) 1999-05-27
AU748414B2 (en) 2002-06-06
DK1064824T3 (en) 2002-09-16
WO1999026455A1 (en) 1999-05-27
ATE218267T1 (en) 2002-06-15
EP1064824A1 (en) 2001-01-03
DE69712926T2 (en) 2002-11-28
AU5045398A (en) 1999-06-07
EP1064824B1 (en) 2002-05-29
DE69712926D1 (en) 2002-07-04
JP2001523937A (en) 2001-11-27

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