DE2551326C2 - Schaltungsanordnung zur Ableitung eines Mittenkanalsignals in einer Stereowiedergabeanlage - Google Patents

Schaltungsanordnung zur Ableitung eines Mittenkanalsignals in einer Stereowiedergabeanlage

Info

Publication number
DE2551326C2
DE2551326C2 DE2551326A DE2551326A DE2551326C2 DE 2551326 C2 DE2551326 C2 DE 2551326C2 DE 2551326 A DE2551326 A DE 2551326A DE 2551326 A DE2551326 A DE 2551326A DE 2551326 C2 DE2551326 C2 DE 2551326C2
Authority
DE
Germany
Prior art keywords
signal
circuit
signals
gain
channel
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
Application number
DE2551326A
Other languages
German (de)
English (en)
Other versions
DE2551326A1 (de
Inventor
Ray Milton Dolby
Philip Charles London Plunkett
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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories Licensing Corp
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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of DE2551326A1 publication Critical patent/DE2551326A1/de
Application granted granted Critical
Publication of DE2551326C2 publication Critical patent/DE2551326C2/de
Expired legal-status Critical Current

Links

Classifications

    • 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 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/05—Generation or adaptation of centre channel in multi-channel audio systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
DE2551326A 1974-11-16 1975-11-15 Schaltungsanordnung zur Ableitung eines Mittenkanalsignals in einer Stereowiedergabeanlage Expired DE2551326C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49724/74A GB1522599A (en) 1974-11-16 1974-11-16 Centre channel derivation for stereophonic cinema sound

Publications (2)

Publication Number Publication Date
DE2551326A1 DE2551326A1 (de) 1976-05-20
DE2551326C2 true DE2551326C2 (de) 1985-04-18

Family

ID=10453325

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2551326A Expired DE2551326C2 (de) 1974-11-16 1975-11-15 Schaltungsanordnung zur Ableitung eines Mittenkanalsignals in einer Stereowiedergabeanlage

Country Status (6)

Country Link
US (1) US4024344A (enExample)
JP (1) JPS591040B2 (enExample)
CA (1) CA1038773A (enExample)
DE (1) DE2551326C2 (enExample)
GB (1) GB1522599A (enExample)
NL (1) NL188384C (enExample)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204092A (en) * 1978-04-11 1980-05-20 Bruney Paul F Audio image recovery system
US4293821A (en) * 1979-06-15 1981-10-06 Eprad Incorporated Audio channel separating apparatus
US5412731A (en) * 1982-11-08 1995-05-02 Desper Products, Inc. Automatic stereophonic manipulation system and apparatus for image enhancement
US4594730A (en) * 1984-04-18 1986-06-10 Rosen Terry K Apparatus and method for enhancing the perceived sound image of a sound signal by source localization
US4615043A (en) * 1984-12-24 1986-09-30 Don Latshaw Triphonic sound system
US4747142A (en) * 1985-07-25 1988-05-24 Tofte David A Three-track sterophonic system
DK152478C (da) * 1985-12-06 1988-07-25 Ole Sparkjaer Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal
US4748669A (en) * 1986-03-27 1988-05-31 Hughes Aircraft Company Stereo enhancement system
US4984273A (en) * 1988-11-21 1991-01-08 Bose Corporation Enhancing bass
JPH03236691A (ja) * 1990-02-14 1991-10-22 Hitachi Ltd テレビジョン受信機用音声回路
US5274708A (en) * 1992-06-01 1993-12-28 Fusan Labs, Inc. Digital stereo sound enhancement unit and method
DE69322920T2 (de) * 1992-10-15 1999-07-29 Koninkl Philips Electronics Nv System zur Ableitung eines Mittelkanalsignals aus einem Stereotonsignal
EP0593128B1 (en) * 1992-10-15 1999-01-07 Koninklijke Philips Electronics N.V. Deriving system for deriving a centre channel signal from a stereophonic audio signal
ES2149235T3 (es) * 1993-01-22 2000-11-01 Koninkl Philips Electronics Nv Transmision digital en 3 canales de señales estereofonicas izquierda y derecha y una señal central.
EP0608937B1 (en) * 1993-01-27 2000-04-12 Koninklijke Philips Electronics N.V. Audio signal processing arrangement for deriving a centre channel signal and also an audio visual reproduction system comprising such a processing arrangement
DE69423922T2 (de) * 1993-01-27 2000-10-05 Koninkl Philips Electronics Nv Tonsignalverarbeitungsanordnung zur Ableitung eines Mittelkanalsignals und audiovisuelles Wiedergabesystem mit solcher Verarbeitungsanordnung
US5661808A (en) * 1995-04-27 1997-08-26 Srs Labs, Inc. Stereo enhancement system
US5850453A (en) * 1995-07-28 1998-12-15 Srs Labs, Inc. Acoustic correction apparatus
US5708719A (en) * 1995-09-07 1998-01-13 Rep Investment Limited Liability Company In-home theater surround sound speaker system
US6118876A (en) * 1995-09-07 2000-09-12 Rep Investment Limited Liability Company Surround sound speaker system for improved spatial effects
US5930370A (en) * 1995-09-07 1999-07-27 Rep Investment Limited Liability In-home theater surround sound speaker system
US5677957A (en) * 1995-11-13 1997-10-14 Hulsebus; Alan Audio circuit producing enhanced ambience
US5970152A (en) * 1996-04-30 1999-10-19 Srs Labs, Inc. Audio enhancement system for use in a surround sound environment
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
US6801630B1 (en) * 1997-08-22 2004-10-05 Yamaha Corporation Device for and method of mixing audio signals
US6038323A (en) * 1997-11-17 2000-03-14 Harman Motive Inc. Stereophonic image enhancement system for use in automobiles
US7013013B2 (en) * 1998-03-20 2006-03-14 Pioneer Electronic Corporation Surround device
US6311155B1 (en) * 2000-02-04 2001-10-30 Hearing Enhancement Company Llc Use of voice-to-remaining audio (VRA) in consumer applications
DE69942784D1 (de) * 1998-04-14 2010-10-28 Hearing Enhancement Co Llc Verfahren und Vorrichtung, die es einem End-Benutzer ermöglichen, Hörer-Präferenzen für Hörbehinderte und Nicht-Hörbehinderte einzustellen
US7415120B1 (en) 1998-04-14 2008-08-19 Akiba Electronics Institute Llc User adjustable volume control that accommodates hearing
US6624873B1 (en) 1998-05-05 2003-09-23 Dolby Laboratories Licensing Corporation Matrix-encoded surround-sound channels in a discrete digital sound format
FI106355B (fi) * 1998-05-07 2001-01-15 Nokia Display Products Oy Menetelmä ja laite virtuaalisen äänilähteen syntetisoimiseksi
US6931134B1 (en) 1998-07-28 2005-08-16 James K. Waller, Jr. Multi-dimensional processor and multi-dimensional audio processor system
JP3324525B2 (ja) * 1998-10-01 2002-09-17 株式会社村田製作所 ３ｄウーハ駆動回路
US6442278B1 (en) 1999-06-15 2002-08-27 Hearing Enhancement Company, Llc Voice-to-remaining audio (VRA) interactive center channel downmix
AR024353A1 (es) 1999-06-15 2002-10-02 He Chunhong Audifono y equipo auxiliar interactivo con relacion de voz a audio remanente
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
US6351733B1 (en) 2000-03-02 2002-02-26 Hearing Enhancement Company, Llc Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
US7266501B2 (en) 2000-03-02 2007-09-04 Akiba Electronics Institute Llc Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
JP2001268700A (ja) * 2000-03-17 2001-09-28 Fujitsu Ten Ltd 音響装置
US20040096065A1 (en) * 2000-05-26 2004-05-20 Vaudrey Michael A. Voice-to-remaining audio (VRA) interactive center channel downmix
US7660424B2 (en) * 2001-02-07 2010-02-09 Dolby Laboratories Licensing Corporation Audio channel spatial translation
US6829359B2 (en) * 2002-10-08 2004-12-07 Arilg Electronics Co, Llc Multispeaker sound imaging system
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
US7542815B1 (en) 2003-09-04 2009-06-02 Akita Blue, Inc. Extraction of left/center/right information from two-channel stereo sources
US7412380B1 (en) * 2003-12-17 2008-08-12 Creative Technology Ltd. Ambience extraction and modification for enhancement and upmix of audio signals
US7970144B1 (en) 2003-12-17 2011-06-28 Creative Technology Ltd Extracting and modifying a panned source for enhancement and upmix of audio signals
JP4349123B2 (ja) * 2003-12-25 2009-10-21 ヤマハ株式会社 音声出力装置
JP2005197896A (ja) * 2004-01-05 2005-07-21 Yamaha Corp スピーカアレイ用のオーディオ信号供給装置
JP4251077B2 (ja) * 2004-01-07 2009-04-08 ヤマハ株式会社 スピーカ装置
US7490044B2 (en) * 2004-06-08 2009-02-10 Bose Corporation Audio signal processing
JP3915804B2 (ja) * 2004-08-26 2007-05-16 ヤマハ株式会社 オーディオ再生装置
JP4779381B2 (ja) * 2005-02-25 2011-09-28 ヤマハ株式会社 アレースピーカ装置
US8045719B2 (en) * 2006-03-13 2011-10-25 Dolby Laboratories Licensing Corporation Rendering center channel audio
WO2008035227A2 (en) * 2006-09-14 2008-03-27 Lg Electronics Inc. Dialogue enhancement techniques
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
JP5082517B2 (ja) * 2007-03-12 2012-11-28 ヤマハ株式会社 スピーカアレイ装置および信号処理方法
CN101384106B (zh) * 2007-09-07 2010-09-29 宏碁股份有限公司 电子装置
TWI429302B (zh) * 2008-07-29 2014-03-01 Lg Electronics Inc 音頻訊號之處理方法及其裝置
US8953817B2 (en) 2008-11-05 2015-02-10 HEAR IP Pty Ltd. System and method for producing a directional output signal
JP5604275B2 (ja) * 2010-12-02 2014-10-08 富士通テン株式会社 相関低減方法、音声信号変換装置および音響再生装置
WO2012094338A1 (en) 2011-01-04 2012-07-12 Srs Labs, Inc. Immersive audio rendering system
SG185850A1 (en) * 2011-05-25 2012-12-28 Creative Tech Ltd A processing method and processing apparatus for stereo audio output enhancement
US9516440B2 (en) * 2012-10-01 2016-12-06 Sonos Providing a multi-channel and a multi-zone audio environment
US9497560B2 (en) 2013-03-13 2016-11-15 Panasonic Intellectual Property Management Co., Ltd. Audio reproducing apparatus and method
WO2014190140A1 (en) 2013-05-23 2014-11-27 Alan Kraemer Headphone audio enhancement system
CA2988540A1 (en) * 2014-08-01 2016-02-04 Steven Jay Borne Audio device
BR112017003218B1 (pt) * 2014-12-12 2021-12-28 Huawei Technologies Co., Ltd. Aparelho de processamento de sinal para aprimorar um componente de voz dentro de um sinal de áudio multicanal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137032A (en) * 1936-09-30 1938-11-15 Bell Telephone Labor Inc Sound reproducing system
US3184550A (en) * 1961-06-06 1965-05-18 Admiral Corp Stereophonic system with derived center channel
US3708631A (en) * 1970-06-08 1973-01-02 Columbia Broadcasting Syst Inc Quadraphonic reproducing system with gain control
US3772479A (en) * 1971-10-19 1973-11-13 Motorola Inc Gain modified multi-channel audio system
US3883692A (en) * 1972-06-16 1975-05-13 Sony Corp Decoder apparatus with logic circuit for use with a four channel stereo
JPS55960B2 (enExample) * 1972-06-16 1980-01-10
DE2248957A1 (de) * 1972-10-02 1974-04-11 Guenther Theile Verfahren zur verbesserung des raeumlichen klangbildes einer stereofonen wiedergabe

Also Published As

Publication number Publication date
JPS591040B2 (ja) 1984-01-10
GB1522599A (en) 1978-08-23
NL188384C (nl) 1992-06-01
JPS5172402A (enExample) 1976-06-23
DE2551326A1 (de) 1976-05-20
NL188384B (nl) 1992-01-02
NL7512937A (nl) 1976-05-18
CA1038773A (en) 1978-09-19
US4024344A (en) 1977-05-17

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Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: REINLAENDER, C., DIPL.-ING. DR.-ING. BERNHARDT, K.

8127 New person/name/address of the applicant

Owner name: DOLBY LABORATORIES LICENSING CORP., SAN FRANCISCO,

D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BERNHARDT, K., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, P., DIPL.-ING., 6200 WIESBADEN WESER, W., DIPL.-PHYS. DR.RER.NAT., PAT.-ANWAELTE, 8000 MUENCHEN BERGEN, P., DIPL.-ING. DR.JUR., PAT.-ASS., 6200 WIESBADEN KRAMER, R., DIPL.-ING., 8000 MUENCHEN ZWIRNER, G., DIPL.-ING. DIPL.-WIRTSCH.-ING., 6200 WIESBADEN HOFFMANN, E., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN