CO6362072A2 - SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION - Google Patents

SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION

Info

Publication number
CO6362072A2
CO6362072A2 CO11055712A CO11055712A CO6362072A2 CO 6362072 A2 CO6362072 A2 CO 6362072A2 CO 11055712 A CO11055712 A CO 11055712A CO 11055712 A CO11055712 A CO 11055712A CO 6362072 A2 CO6362072 A2 CO 6362072A2
Authority
CO
Colombia
Prior art keywords
signal
encoder
time
audio
branch
Prior art date
Application number
CO11055712A
Other languages
Spanish (es)
Inventor
Max Neuendorf
Stefan Bayer
Redwan Salami
Philippe Gournay
Bernhard Grill
Markus Multrus
Ralf Geiger
Frederik Nagel
Nikolaus Rettelbach
Julien Robilliard
Guillaume Fuchs
Jeremie Lecomte
Original Assignee
Fraunhofer Ges Ev
Voiceage Corp
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 EP09002271A external-priority patent/EP2144230A1/en
Application filed by Fraunhofer Ges Ev, Voiceage Corp filed Critical Fraunhofer Ges Ev
Publication of CO6362072A2 publication Critical patent/CO6362072A2/en

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
    • G10L19/04—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
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un codificador de audio para codificar una señal de audio comprende una primera rama codificadora (400); donde la primera rama codificadora comprende un primer convertidor (410) para convertir una señal de un dominio del tiempo a un dominio de frecuencia. Más aun, el codificador de audio comprende una segunda trama codificadora (500) que comprende un segundo convertidor de tiempo/frecuencia (523). Además, se presenta un analizador de señales (300/525) para analizar la señal de audio. El analizador de señales, por un lado, determina si una porción de audio es eficaz en la señal de salida del codificador como primera señal codificada procedente de la primera rama codificadora o como segunda señal codificada de una segunda rama codificadora. Por otro lado, el analizador de señales determina una resolución en tiempo/frecuencia que han de aplicar los convertidores (410, 523) al generar las señales codificadas. Una interfaz de salida incluye, además de la primera señal codificada y la segunda señal codificada, una información de resolución que identifica la resolución empleada por el primer convertidor de tiempo/frecuencia y que es utilizada por el segundo convertidor de tiempo/frecuencia.An audio encoder for encoding an audio signal comprises a first encoding branch (400); wherein the first coding branch comprises a first converter (410) to convert a signal from a time domain to a frequency domain. Moreover, the audio encoder comprises a second encoder frame (500) comprising a second time / frequency converter (523). In addition, a signal analyzer (300/525) is presented to analyze the audio signal. The signal analyzer, on the one hand, determines whether an audio portion is effective in the encoder output signal as the first encoded signal from the first encoder branch or as the second encoded signal of a second encoder branch. On the other hand, the signal analyzer determines a resolution in time / frequency to be applied by the converters (410, 523) when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information that identifies the resolution employed by the first time / frequency converter and which is used by the second time / frequency converter.

CO11055712A 2008-10-08 2011-05-06 SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION CO6362072A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10382508P 2008-10-08 2008-10-08
EP08017663 2008-10-08
EP09002271A EP2144230A1 (en) 2008-07-11 2009-02-18 Low bitrate audio encoding/decoding scheme having cascaded switches

Publications (1)

Publication Number Publication Date
CO6362072A2 true CO6362072A2 (en) 2012-01-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CO11055712A CO6362072A2 (en) 2008-10-08 2011-05-06 SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION

Country Status (14)

Country Link
EP (2) EP3640941A1 (en)
JP (1) JP5555707B2 (en)
KR (3) KR20130069833A (en)
CN (1) CN102177426B (en)
AR (1) AR076060A1 (en)
BR (1) BRPI0914056B1 (en)
CA (1) CA2739736C (en)
CO (1) CO6362072A2 (en)
MX (1) MX2011003824A (en)
MY (1) MY154633A (en)
RU (1) RU2520402C2 (en)
TW (2) TWI419148B (en)
WO (1) WO2010040522A2 (en)
ZA (1) ZA201102537B (en)

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EP2345030A2 (en) 2011-07-20
TWI419148B (en) 2013-12-11
CA2739736C (en) 2015-12-01
ZA201102537B (en) 2011-12-28
MX2011003824A (en) 2011-05-02
RU2011117699A (en) 2012-11-10
KR20130133917A (en) 2013-12-09
JP5555707B2 (en) 2014-07-23
EP3640941A1 (en) 2020-04-22
CN102177426A (en) 2011-09-07
AU2009301358A1 (en) 2010-04-15
TWI520128B (en) 2016-02-01
CA2739736A1 (en) 2010-04-15
BRPI0914056A2 (en) 2015-11-03
WO2010040522A2 (en) 2010-04-15
JP2012505423A (en) 2012-03-01
AU2009301358A8 (en) 2011-05-26
KR20110081291A (en) 2011-07-13
KR20130069833A (en) 2013-06-26
TW201344679A (en) 2013-11-01
TW201142827A (en) 2011-12-01
CN102177426B (en) 2014-11-05
RU2520402C2 (en) 2014-06-27
MY154633A (en) 2015-07-15
WO2010040522A3 (en) 2010-09-02
AR076060A1 (en) 2011-05-18
KR101403115B1 (en) 2014-06-27
BRPI0914056B1 (en) 2019-07-02

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