JP6768824B2 - マルチチャンネルコーディング - Google Patents

マルチチャンネルコーディング Download PDF

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Publication number
JP6768824B2
JP6768824B2 JP2018548749A JP2018548749A JP6768824B2 JP 6768824 B2 JP6768824 B2 JP 6768824B2 JP 2018548749 A JP2018548749 A JP 2018548749A JP 2018548749 A JP2018548749 A JP 2018548749A JP 6768824 B2 JP6768824 B2 JP 6768824B2
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JP
Japan
Prior art keywords
window
windows
signal
stereo
length
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JP2018548749A
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English (en)
Japanese (ja)
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JP2019512737A (ja
JP2019512737A5 (enExample
Inventor
チェビーヤム、ベンカタ・スブラマニヤム・チャンドラ・セカー
アッティ、ベンカトラマン・エス．
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Qualcomm Inc
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Qualcomm Inc
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Publication of JP2019512737A5 publication Critical patent/JP2019512737A5/ja
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    • 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
    • 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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • 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
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • 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
    • H04S2400/05—Generation or adaptation of centre channel in multi-channel audio systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
JP2018548749A 2016-03-18 2017-03-17 マルチチャンネルコーディング Active JP6768824B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201662310635P 2016-03-18 2016-03-18
US62/310,635 2016-03-18
US15/461,312 US9959877B2 (en) 2016-03-18 2017-03-16 Multi channel coding
US15/461,312 2017-03-16
PCT/US2017/023035 WO2017161315A1 (en) 2016-03-18 2017-03-17 Multi channel coding

Publications (3)

Publication Number Publication Date
JP2019512737A JP2019512737A (ja) 2019-05-16
JP2019512737A5 JP2019512737A5 (enExample) 2020-03-12
JP6768824B2 true JP6768824B2 (ja) 2020-10-14

Family

ID=58489063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018548749A Active JP6768824B2 (ja) 2016-03-18 2017-03-17 マルチチャンネルコーディング

Country Status (10)

Country Link
US (1) US9959877B2 (enExample)
EP (1) EP3430623B1 (enExample)
JP (1) JP6768824B2 (enExample)
KR (1) KR102168054B1 (enExample)
CN (1) CN108780651B (enExample)
BR (1) BR112018068491A2 (enExample)
CA (1) CA3014784C (enExample)
ES (1) ES2783975T3 (enExample)
TW (1) TWI640980B (enExample)
WO (1) WO2017161315A1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11545165B2 (en) 2018-07-03 2023-01-03 Panasonic Intellectual Property Corporation Of America Encoding device and encoding method using a determined prediction parameter based on an energy difference between channels
WO2020094263A1 (en) 2018-11-05 2020-05-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and audio signal processor, for providing a processed audio signal representation, audio decoder, audio encoder, methods and computer programs
CA3193359A1 (en) * 2019-06-14 2020-12-17 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Parameter encoding and decoding
WO2021155460A1 (en) * 2020-02-03 2021-08-12 Voiceage Corporation Switching between stereo coding modes in a multichannel sound codec
WO2021260825A1 (ja) * 2020-06-24 2021-12-30 日本電信電話株式会社 音信号符号化方法、音信号符号化装置、プログラム及び記録媒体
WO2021260826A1 (ja) * 2020-06-24 2021-12-30 日本電信電話株式会社 音信号復号方法、音信号復号装置、プログラム及び記録媒体

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7072726B2 (en) * 2002-06-19 2006-07-04 Microsoft Corporation Converting M channels of digital audio data into N channels of digital audio data
US7325023B2 (en) * 2003-09-29 2008-01-29 Sony Corporation Method of making a window type decision based on MDCT data in audio encoding
US20050137729A1 (en) 2003-12-18 2005-06-23 Atsuhiro Sakurai Time-scale modification stereo audio signals
US20050276430A1 (en) * 2004-05-28 2005-12-15 Microsoft Corporation Fast headphone virtualization
EP3640941A1 (en) * 2008-10-08 2020-04-22 Fraunhofer Gesellschaft zur Förderung der Angewand Multi-resolution switched audio encoding/decoding scheme
CA2966469C (en) 2009-01-28 2020-05-05 Dolby International Ab Improved harmonic transposition
BR122019013299B1 (pt) * 2010-04-09 2021-01-05 Dolby International Ab aparelho e método para emitir um sinal de áudio esterofônico possuindo um canal esquerdo e um canal direito e meio legível por computador não transitório
WO2012048472A1 (en) 2010-10-15 2012-04-19 Huawei Technologies Co., Ltd. Signal analyzer, signal analyzing method, signal synthesizer, signal synthesizing method, windower, transformer and inverse transformer
EP2980791A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Processor, method and computer program for processing an audio signal using truncated analysis or synthesis window overlap portions

Also Published As

Publication number Publication date
ES2783975T3 (es) 2020-09-21
BR112018068491A2 (pt) 2019-01-22
TWI640980B (zh) 2018-11-11
KR102168054B1 (ko) 2020-10-20
EP3430623B1 (en) 2020-01-01
WO2017161315A1 (en) 2017-09-21
TW201737242A (zh) 2017-10-16
US20170270936A1 (en) 2017-09-21
EP3430623A1 (en) 2019-01-23
CA3014784A1 (en) 2017-09-21
JP2019512737A (ja) 2019-05-16
CN108780651A (zh) 2018-11-09
CN108780651B (zh) 2023-05-30
CA3014784C (en) 2023-04-25
KR20180125475A (ko) 2018-11-23
US9959877B2 (en) 2018-05-01

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