EP3583786A4 - Apparatus and method for downmixing multichannel audio signals - Google Patents

Apparatus and method for downmixing multichannel audio signals Download PDF

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Publication number
EP3583786A4
EP3583786A4 EP18754857.3A EP18754857A EP3583786A4 EP 3583786 A4 EP3583786 A4 EP 3583786A4 EP 18754857 A EP18754857 A EP 18754857A EP 3583786 A4 EP3583786 A4 EP 3583786A4
Authority
EP
European Patent Office
Prior art keywords
audio signals
multichannel audio
downmixing
downmixing multichannel
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.)
Withdrawn
Application number
EP18754857.3A
Other languages
German (de)
French (fr)
Other versions
EP3583786A1 (en
Inventor
Pei-Lun Hsieh
Tsai-Yi WU
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.)
Ambidio Inc
Original Assignee
Ambidio Inc
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 Ambidio Inc filed Critical Ambidio Inc
Publication of EP3583786A1 publication Critical patent/EP3583786A1/en
Publication of EP3583786A4 publication Critical patent/EP3583786A4/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • 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
    • H04S2400/07—Generation or adaptation of the Low Frequency Effect [LFE] channel, e.g. distribution or signal processing
    • 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
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Stereophonic System (AREA)
EP18754857.3A 2017-02-17 2018-02-16 Apparatus and method for downmixing multichannel audio signals Withdrawn EP3583786A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762460584P 2017-02-17 2017-02-17
PCT/US2018/000075 WO2018151858A1 (en) 2017-02-17 2018-02-16 Apparatus and method for downmixing multichannel audio signals

Publications (2)

Publication Number Publication Date
EP3583786A1 EP3583786A1 (en) 2019-12-25
EP3583786A4 true EP3583786A4 (en) 2020-12-23

Family

ID=63169877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18754857.3A Withdrawn EP3583786A4 (en) 2017-02-17 2018-02-16 Apparatus and method for downmixing multichannel audio signals

Country Status (6)

Country Link
EP (1) EP3583786A4 (en)
JP (1) JP2020508590A (en)
KR (1) KR20190109726A (en)
CN (1) CN109644315A (en)
TW (1) TW201843675A (en)
WO (1) WO2018151858A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3091636B1 (en) * 2019-01-04 2020-12-11 Parrot Faurecia Automotive Sas Multichannel audio signal processing method
US11432069B2 (en) * 2019-10-10 2022-08-30 Boomcloud 360, Inc. Spectrally orthogonal audio component processing
US10841728B1 (en) * 2019-10-10 2020-11-17 Boomcloud 360, Inc. Multi-channel crosstalk processing
CN110853658B (en) * 2019-11-26 2021-12-07 中国电影科学技术研究所 Method and apparatus for downmixing audio signal, computer device, and readable storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110243338A1 (en) * 2008-12-15 2011-10-06 Dolby Laboratories Licensing Corporation Surround sound virtualizer and method with dynamic range compression
US8050434B1 (en) * 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
US20120170756A1 (en) * 2011-01-04 2012-07-05 Srs Labs, Inc. Immersive audio rendering system
WO2017074321A1 (en) * 2015-10-27 2017-05-04 Ambidio, Inc. Apparatus and method for sound stage enhancement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2000242253A1 (en) * 2000-04-10 2001-10-23 Harman International Industries Incorporated Creating virtual surround using dipole and monopole pressure fields
CN1233200C (en) * 2003-03-04 2005-12-21 Tcl王牌电子(深圳)有限公司 FPGA 5.1 channel virtual speech reproducing method and device
KR100644617B1 (en) * 2004-06-16 2006-11-10 삼성전자주식회사 Apparatus and method for reproducing 7.1 channel audio
US7853022B2 (en) * 2004-10-28 2010-12-14 Thompson Jeffrey K Audio spatial environment engine
US7751572B2 (en) * 2005-04-15 2010-07-06 Dolby International Ab Adaptive residual audio coding
EP1921605B1 (en) * 2005-09-01 2014-03-12 Panasonic Corporation Multi-channel acoustic signal processing device
EP2169664A3 (en) * 2008-09-25 2010-04-07 LG Electronics Inc. A method and an apparatus for processing a signal
JP5400225B2 (en) * 2009-10-05 2014-01-29 ハーマン インターナショナル インダストリーズ インコーポレイテッド System for spatial extraction of audio signals
TWI479905B (en) * 2012-01-12 2015-04-01 Univ Nat Central Multi-channel down mixing device
EP3081014A4 (en) * 2013-12-13 2017-08-09 Ambidio, Inc. Apparatus and method for sound stage enhancement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8050434B1 (en) * 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
US20110243338A1 (en) * 2008-12-15 2011-10-06 Dolby Laboratories Licensing Corporation Surround sound virtualizer and method with dynamic range compression
US20120170756A1 (en) * 2011-01-04 2012-07-05 Srs Labs, Inc. Immersive audio rendering system
WO2017074321A1 (en) * 2015-10-27 2017-05-04 Ambidio, Inc. Apparatus and method for sound stage enhancement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018151858A1 *

Also Published As

Publication number Publication date
JP2020508590A (en) 2020-03-19
WO2018151858A1 (en) 2018-08-23
EP3583786A1 (en) 2019-12-25
TW201843675A (en) 2018-12-16
KR20190109726A (en) 2019-09-26
CN109644315A (en) 2019-04-16

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