BR112013021164A2 - correção de ganho após quantização em codificação de áudio - Google Patents

correção de ganho após quantização em codificação de áudio

Info

Publication number
BR112013021164A2
BR112013021164A2 BR112013021164A BR112013021164A BR112013021164A2 BR 112013021164 A2 BR112013021164 A2 BR 112013021164A2 BR 112013021164 A BR112013021164 A BR 112013021164A BR 112013021164 A BR112013021164 A BR 112013021164A BR 112013021164 A2 BR112013021164 A2 BR 112013021164A2
Authority
BR
Brazil
Prior art keywords
gain
gain correction
quantization
audio coding
representation
Prior art date
Application number
BR112013021164A
Other languages
English (en)
Other versions
BR112013021164B1 (pt
Inventor
Norvell Erik
Grancharov Volodya
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR112013021164A2 publication Critical patent/BR112013021164A2/pt
Publication of BR112013021164B1 publication Critical patent/BR112013021164B1/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0204—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 using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0212—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 using orthogonal transformation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain

Abstract

correção de ganho após quantização em codificação de áudio trata-se de um aparelho de ajuste de ganho (60) para uso na decodificação de áudio que foi codificado com representações de formato e ganho separadas que inclui um medidor de precisão (62) configurado para estimar uma medição de precisão (a(b)) da representação de formato (ñ(b)) e para determinar uma correção de ganho (g~ c~(b)) com base na medição de precisão estimada (a(b)). o mesmo inclui também um ajustador de envelope (64) configurado para ajustar a representação de ganho (ê(b)) com base na correção de ganho determinada.
BR112013021164-4A 2011-03-04 2011-07-04 método e aparelho de ajuste de ganho na decodificação de áudio que foi codificado com representações de formato e ganho separadas, decodificador e nó de rede BR112013021164B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161449230P 2011-03-04 2011-03-04
US61/449,230 2011-03-04
PCT/SE2011/050899 WO2012121637A1 (en) 2011-03-04 2011-07-04 Post-quantization gain correction in audio coding

Publications (2)

Publication Number Publication Date
BR112013021164A2 true BR112013021164A2 (pt) 2018-06-26
BR112013021164B1 BR112013021164B1 (pt) 2021-02-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013021164-4A BR112013021164B1 (pt) 2011-03-04 2011-07-04 método e aparelho de ajuste de ganho na decodificação de áudio que foi codificado com representações de formato e ganho separadas, decodificador e nó de rede

Country Status (10)

Country Link
US (4) US10121481B2 (pt)
EP (2) EP3244405B1 (pt)
CN (2) CN105225669B (pt)
BR (1) BR112013021164B1 (pt)
DK (1) DK3244405T3 (pt)
ES (2) ES2744100T3 (pt)
PL (2) PL2681734T3 (pt)
PT (1) PT2681734T (pt)
TR (1) TR201910075T4 (pt)
WO (1) WO2012121637A1 (pt)

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Also Published As

Publication number Publication date
EP2681734B1 (en) 2017-06-21
RU2013144554A (ru) 2015-04-10
EP3244405A1 (en) 2017-11-15
TR201910075T4 (tr) 2019-08-21
DK3244405T3 (da) 2019-07-22
EP3244405B1 (en) 2019-06-19
US20210287688A1 (en) 2021-09-16
WO2012121637A1 (en) 2012-09-13
US20200005803A1 (en) 2020-01-02
CN103443856A (zh) 2013-12-11
US10460739B2 (en) 2019-10-29
BR112013021164B1 (pt) 2021-02-17
US20130339038A1 (en) 2013-12-19
CN105225669A (zh) 2016-01-06
US10121481B2 (en) 2018-11-06
US20170330573A1 (en) 2017-11-16
EP2681734A1 (en) 2014-01-08
CN103443856B (zh) 2015-09-09
ES2641315T3 (es) 2017-11-08
EP2681734A4 (en) 2014-11-05
CN105225669B (zh) 2018-12-21
ES2744100T3 (es) 2020-02-21
PL3244405T3 (pl) 2019-12-31
PT2681734T (pt) 2017-07-31
PL2681734T3 (pl) 2017-12-29
US11056125B2 (en) 2021-07-06

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B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
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