BRPI0716308A8 - "dispositivo e método para pós-processamento de valores espectrais e codificador e decodificador de sinais de áudio" - Google Patents

"dispositivo e método para pós-processamento de valores espectrais e codificador e decodificador de sinais de áudio"

Info

Publication number
BRPI0716308A8
BRPI0716308A8 BRPI0716308A BRPI0716308A BRPI0716308A8 BR PI0716308 A8 BRPI0716308 A8 BR PI0716308A8 BR PI0716308 A BRPI0716308 A BR PI0716308A BR PI0716308 A BRPI0716308 A BR PI0716308A BR PI0716308 A8 BRPI0716308 A8 BR PI0716308A8
Authority
BR
Brazil
Prior art keywords
spectral
audio signal
spectral values
blocks
sequence
Prior art date
Application number
BRPI0716308A
Other languages
English (en)
Inventor
Bernd Edler
Christian Ertel
Popp Harald
Johannes Hilpert
Geiger Ralf
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of BRPI0716308A2 publication Critical patent/BRPI0716308A2/pt
Publication of BRPI0716308A8 publication Critical patent/BRPI0716308A8/pt
Publication of BRPI0716308B1 publication Critical patent/BRPI0716308B1/pt

Links

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
    • G10L19/02—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 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered 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
    • G10L19/04—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Error Detection And Correction (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

dispositivo e método para pós-processamento de valores espectrais e codificador e decodificador de sinais de áudio para pós-processamento de valores espectrais que são baseados em um primeiro algoritmo de transformação para conversão do sinal de áudio em uma representação espectral, primeiro é fornecida uma sequência de blocos de valores espectrais representando uma sequência de blocos de amostras do sinal de áudio. depois disto, uma adição ponderada dos valores espectrais da sequência de blocos de valores espectrais é executada a fim de obter uma sequência de blocos de valores espectrais pósprocessados, em que a combinação é realizada tal que são usados para cálculo de um valor espectral pós-processado para uma banda de frequência e uma duração de tempo, um valor espectral da sequência de blocos para a banda de frequência e duração de tempo e um valor espectral para outra banda de frequência ou outra duração de tempo, em que a combinação é além disso realizada de tal forma que tais fatores de ponderação são usados onde os valores espectrais pós-processados são uma aproximação para os valores espectrais, quando eles são obtidos através da conversão do sinal de áudio em uma representação espectral usando um segundo algoritmo de transformação que é diferente do primeiro algoritmo de transformação. os valores espectrais pós-processados, em particular, são usados para uma formação de diferença dentro de um codificador escalável ou para uma adição dentro de um decodificador escalável, respectivamente.
BRPI0716308-8A 2006-11-02 2007-09-28 “dispositivo e método para pós-processamento de valores espectrais e codificador e decodificador de sinais de áudio" BRPI0716308B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006051673.7 2006-11-02
DE102006051673A DE102006051673A1 (de) 2006-11-02 2006-11-02 Vorrichtung und Verfahren zum Nachbearbeiten von Spektralwerten und Encodierer und Decodierer für Audiosignale
PCT/EP2007/008477 WO2008052627A1 (en) 2006-11-02 2007-09-28 Device and method for postprocessing spectral values and encoder and decoder for audio signals

Publications (3)

Publication Number Publication Date
BRPI0716308A2 BRPI0716308A2 (pt) 2015-05-19
BRPI0716308A8 true BRPI0716308A8 (pt) 2019-01-15
BRPI0716308B1 BRPI0716308B1 (pt) 2020-10-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0716308-8A BRPI0716308B1 (pt) 2006-11-02 2007-09-28 “dispositivo e método para pós-processamento de valores espectrais e codificador e decodificador de sinais de áudio"

Country Status (21)

Country Link
US (1) US8321207B2 (pt)
EP (2) EP1964111B1 (pt)
JP (1) JP5301451B2 (pt)
KR (1) KR101090541B1 (pt)
CN (1) CN101553870B (pt)
AT (1) ATE489703T1 (pt)
AU (2) AU2007315373B2 (pt)
BR (1) BRPI0716308B1 (pt)
CA (1) CA2668056C (pt)
DE (2) DE102006051673A1 (pt)
ES (2) ES2354743T3 (pt)
IL (1) IL198192A (pt)
MX (1) MX2009004639A (pt)
MY (2) MY156427A (pt)
NO (2) NO341615B1 (pt)
PL (2) PL2264699T3 (pt)
PT (1) PT2264699T (pt)
RU (1) RU2423740C2 (pt)
TR (1) TR201903942T4 (pt)
TW (1) TWI350068B (pt)
WO (1) WO2008052627A1 (pt)

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US10349085B2 (en) 2016-02-15 2019-07-09 Qualcomm Incorporated Efficient parameter storage for compact multi-pass transforms
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Also Published As

Publication number Publication date
NO20171179A1 (no) 2009-05-29
EP2264699A3 (en) 2012-10-10
NO343261B1 (no) 2019-01-14
EP2264699B1 (en) 2018-12-19
EP1964111A1 (en) 2008-09-03
TWI350068B (en) 2011-10-01
PL2264699T3 (pl) 2019-06-28
TW200836492A (en) 2008-09-01
JP2010508550A (ja) 2010-03-18
BRPI0716308A2 (pt) 2015-05-19
AU2011200509A1 (en) 2011-03-03
CN101553870A (zh) 2009-10-07
PT2264699T (pt) 2019-04-02
CA2668056A1 (en) 2008-05-08
ATE489703T1 (de) 2010-12-15
AU2007315373A8 (en) 2009-06-11
NO341615B1 (no) 2017-12-11
HK1120328A1 (en) 2009-03-27
IL198192A (en) 2014-05-28
IL198192A0 (en) 2009-12-24
CA2668056C (en) 2014-07-29
RU2009117571A (ru) 2010-12-10
US20100017213A1 (en) 2010-01-21
BRPI0716308B1 (pt) 2020-10-06
JP5301451B2 (ja) 2013-09-25
AU2007315373B2 (en) 2011-03-17
EP2264699A2 (en) 2010-12-22
MX2009004639A (es) 2009-06-26
US8321207B2 (en) 2012-11-27
KR101090541B1 (ko) 2011-12-08
AU2007315373A1 (en) 2008-05-08
MY181471A (en) 2020-12-22
DE102006051673A1 (de) 2008-05-15
ES2720871T3 (es) 2019-07-25
MY156427A (en) 2016-02-26
TR201903942T4 (tr) 2019-04-22
CN101553870B (zh) 2012-07-18
EP1964111B1 (en) 2010-11-24
AU2011200509B2 (en) 2011-12-08
ES2354743T3 (es) 2011-03-17
KR20090085047A (ko) 2009-08-06
RU2423740C2 (ru) 2011-07-10
PL1964111T3 (pl) 2011-05-31
DE602007010721D1 (de) 2011-01-05
NO20092125L (no) 2009-05-29
WO2008052627A1 (en) 2008-05-08

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