CN108780651B - 多声道译码 - Google Patents

多声道译码 Download PDF

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Publication number
CN108780651B
CN108780651B CN201780015738.7A CN201780015738A CN108780651B CN 108780651 B CN108780651 B CN 108780651B CN 201780015738 A CN201780015738 A CN 201780015738A CN 108780651 B CN108780651 B CN 108780651B
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China
Prior art keywords
windows
window
signal
length
decoder
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CN201780015738.7A
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English (en)
Chinese (zh)
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CN108780651A (zh
Inventor
V·S·C·S·奇比亚姆
V·S·阿提
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Qualcomm Inc
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Qualcomm Inc
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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)
CN201780015738.7A 2016-03-18 2017-03-17 多声道译码 Active CN108780651B (zh)

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 (2)

Publication Number Publication Date
CN108780651A CN108780651A (zh) 2018-11-09
CN108780651B true CN108780651B (zh) 2023-05-30

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Family Applications (1)

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CN201780015738.7A Active CN108780651B (zh) 2016-03-18 2017-03-17 多声道译码

Country Status (10)

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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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1997988A (zh) * 2003-09-29 2007-07-11 索尼电子有限公司 在音频编码过程中根据mdct数据进行视窗类型判定的方法
WO2010040522A2 (en) * 2008-10-08 2010-04-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. Multi-resolution switched audio encoding/decoding scheme
CN103282958A (zh) * 2010-10-15 2013-09-04 华为技术有限公司 信号分析器、信号分析方法、信号合成器、信号合成方法、加窗工具、变换器和反向变换器
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

Family Cites Families (5)

* 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
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1997988A (zh) * 2003-09-29 2007-07-11 索尼电子有限公司 在音频编码过程中根据mdct数据进行视窗类型判定的方法
WO2010040522A2 (en) * 2008-10-08 2010-04-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. Multi-resolution switched audio encoding/decoding scheme
CN103282958A (zh) * 2010-10-15 2013-09-04 华为技术有限公司 信号分析器、信号分析方法、信号合成器、信号合成方法、加窗工具、变换器和反向变换器
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
JP6768824B2 (ja) 2020-10-14
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
CA3014784C (en) 2023-04-25
KR20180125475A (ko) 2018-11-23
US9959877B2 (en) 2018-05-01

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