CA3024167A1 - Systeme de codec audio adaptatif, procede, appareil et support - Google Patents

Systeme de codec audio adaptatif, procede, appareil et support Download PDF

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Publication number
CA3024167A1
CA3024167A1 CA3024167A CA3024167A CA3024167A1 CA 3024167 A1 CA3024167 A1 CA 3024167A1 CA 3024167 A CA3024167 A CA 3024167A CA 3024167 A CA3024167 A CA 3024167A CA 3024167 A1 CA3024167 A1 CA 3024167A1
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CA
Canada
Prior art keywords
signal
step size
filter
quantized signal
lfactor
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.)
Pending
Application number
CA3024167A
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English (en)
Inventor
James Johnston
Stephen White
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.)
Immersion Services LLC
Original Assignee
Immersion Services LLC
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
Priority claimed from US15/151,109 external-priority patent/US10699725B2/en
Priority claimed from US15/151,220 external-priority patent/US10756755B2/en
Priority claimed from US15/151,200 external-priority patent/US10770088B2/en
Priority claimed from US15/151,211 external-priority patent/US20170330575A1/en
Application filed by Immersion Services LLC filed Critical Immersion Services LLC
Publication of CA3024167A1 publication Critical patent/CA3024167A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/035—Scalar quantisation
    • 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
    • G10L19/04—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 predictive techniques
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L2019/0001—Codebooks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un codeur comprend un filtre passe-bas pour filtrer des signaux audio d'entrée. Les coefficients de filtre du filtre passe-bas sont fixes. Le codeur génère des signaux quantifiés sur la base d'un signal de différence. Le codeur comprend un quantificateur adaptatif et un décodeur pour générer des signaux de rétroaction. Le décodeur comprend un quantificateur inverse et un prédicteur. Le prédicteur a des paramètres de commande fixes qui sont basés sur une réponse en fréquence du filtre passe-bas. Le prédicteur peut comprendre un filtre à réponse impulsionnelle finie dont les coefficients de filtre sont fixes. Le décodeur peut comprendre un filtre adaptatif de mise en forme du bruit couplé entre le filtre passe-bas et le codeur. Le filtre adaptatif de mise en forme du bruit permet d'aplanir les signaux dans un spectre de fréquence correspondant à un spectre de fréquence du filtre passe-bas.
CA3024167A 2016-05-10 2017-05-09 Systeme de codec audio adaptatif, procede, appareil et support Pending CA3024167A1 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US15/151,109 US10699725B2 (en) 2016-05-10 2016-05-10 Adaptive audio encoder system, method and article
US15/151,109 2016-05-10
US15/151,220 US10756755B2 (en) 2016-05-10 2016-05-10 Adaptive audio codec system, method and article
US15/151,200 US10770088B2 (en) 2016-05-10 2016-05-10 Adaptive audio decoder system, method and article
US15/151,211 US20170330575A1 (en) 2016-05-10 2016-05-10 Adaptive audio codec system, method and article
US15/151,200 2016-05-10
US15/151,211 2016-05-10
US15/151,220 2016-05-10
PCT/US2017/031735 WO2017196833A1 (fr) 2016-05-10 2017-05-09 Système de codec audio adaptatif, procédé, appareil et support

Publications (1)

Publication Number Publication Date
CA3024167A1 true CA3024167A1 (fr) 2017-11-16

Family

ID=58710160

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3024167A Pending CA3024167A1 (fr) 2016-05-10 2017-05-09 Systeme de codec audio adaptatif, procede, appareil et support

Country Status (7)

Country Link
EP (1) EP3455854B1 (fr)
JP (1) JP7005036B2 (fr)
KR (1) KR20190011742A (fr)
CN (1) CN109416913B (fr)
AU (1) AU2017262757B2 (fr)
CA (1) CA3024167A1 (fr)
WO (1) WO2017196833A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116684633A (zh) * 2019-08-26 2023-09-01 Lg电子株式会社 图像编码方法、图像解码方法和比特流发送方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US6975254B1 (en) * 1998-12-28 2005-12-13 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Methods and devices for coding or decoding an audio signal or bit stream
AU4190200A (en) * 1999-04-05 2000-10-23 Hughes Electronics Corporation A frequency domain interpolative speech codec system
US6751587B2 (en) * 2002-01-04 2004-06-15 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
DK1400954T3 (da) * 2002-09-04 2008-03-31 Microsoft Corp Entropi-kodning ved tilpasning af kodning mellem niveau- og runlængde/niveau-moduser
JP3748261B2 (ja) * 2003-06-17 2006-02-22 沖電気工業株式会社 Ａｄｐｃｍ方式復号器
WO2005057550A1 (fr) 2003-12-15 2005-06-23 Matsushita Electric Industrial Co., Ltd. Dispositif de compression/decompression audio
EP1864281A1 (fr) * 2005-04-01 2007-12-12 QUALCOMM Incorporated Systemes, procedes et appareil d'elimination de rafales en bande superieure
US7342525B2 (en) * 2005-12-23 2008-03-11 Cirrus Logic, Inc. Sample rate conversion combined with DSM
DE102006022346B4 (de) * 2006-05-12 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalcodierung
EP2077551B1 (fr) * 2008-01-04 2011-03-02 Dolby Sweden AB Encodeur audio et décodeur
FR2938688A1 (fr) * 2008-11-18 2010-05-21 France Telecom Codage avec mise en forme du bruit dans un codeur hierarchique
JP5863830B2 (ja) * 2011-02-16 2016-02-17 ドルビー ラボラトリーズ ライセンシング コーポレイション フィルタ係数を生成してフィルタを設定する方法、エンコーダ及びデコーダ

Also Published As

Publication number Publication date
EP3455854A1 (fr) 2019-03-20
WO2017196833A1 (fr) 2017-11-16
CN109416913B (zh) 2024-03-15
KR20190011742A (ko) 2019-02-07
AU2017262757B2 (en) 2022-04-07
CN109416913A (zh) 2019-03-01
EP3455854B1 (fr) 2020-09-16
AU2017262757A1 (en) 2019-01-03
JP7005036B2 (ja) 2022-01-21
JP2019521398A (ja) 2019-07-25

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