AR076060A1 - SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION - Google Patents

SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION

Info

Publication number
AR076060A1
AR076060A1 ARP090103876A ARP090103876A AR076060A1 AR 076060 A1 AR076060 A1 AR 076060A1 AR P090103876 A ARP090103876 A AR P090103876A AR P090103876 A ARP090103876 A AR P090103876A AR 076060 A1 AR076060 A1 AR 076060A1
Authority
AR
Argentina
Prior art keywords
signal
encoder
time
branch
audio
Prior art date
Application number
ARP090103876A
Other languages
Spanish (es)
Original Assignee
Ten Forschung Ev Fraunhofer
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 Ten Forschung Ev Fraunhofer filed Critical Ten Forschung Ev Fraunhofer
Publication of AR076060A1 publication Critical patent/AR076060A1/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 senal de audio comprende una primera rama codificadora (400), donde la primera rama codificadora comprende un primer convertidor (410) para convertir una senal de un dominio del tiempo a un dominio de frecuencia. Más aun, el codificador de audio comprende una segunda rama codificadora (500) que comprende un segundo convertidor de tiempo/frecuencia (523). Además, se presenta un analizador de senales (300/525) para analizar la senal de audio. El analizador de senales, por un lado, determina si una porcion de audio es eficaz en la senal de salida del codificador como primera senal codificada procedente de la primera rama codificadora o como segunda senal codificada de una segunda rama codificadora. Por otro lado, el analizador de senales determina una resolucion en tiempo/frecuencia que han de aplicar los convertidores (410, 523) al generar las senales codificadas. Una interfaz de salida incluye, además de la primera senal codificada y la segunda senal codificada, una informacion de resolucion que identifica la resolucion 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 encoding branch comprises a first converter (410) for converting a signal from a time domain to a frequency domain. Moreover, the audio encoder comprises a second encoder branch (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 time / frequency resolution to be applied by converters (410, 523) when generating the encoded signals. An output interface includes, in addition to the first coded signal and the second coded 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.

ARP090103876A 2008-10-08 2009-10-08 SCHEDULE OF MULTIPLE RESOLUTION SWITCHED AUDIO CODE / DECODIFICATION AR076060A1 (en)

Applications Claiming Priority (4)

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
PCT/EP2009/007205 WO2010040522A2 (en) 2008-10-08 2009-10-07 Multi-resolution switched audio encoding/decoding scheme

Publications (1)

Publication Number Publication Date
AR076060A1 true AR076060A1 (en) 2011-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
ARP090103876A AR076060A1 (en) 2008-10-08 2009-10-08 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
KR101403115B1 (en) 2014-06-27
CO6362072A2 (en) 2012-01-20
BRPI0914056B1 (en) 2019-07-02

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