AR080477A1 - Aparato y metodo para procesar una senal de audio entrada utilizando bancos de filtro en cascada - Google Patents

Aparato y metodo para procesar una senal de audio entrada utilizando bancos de filtro en cascada

Info

Publication number
AR080477A1
AR080477A1 ARP110100724A ARP110100724A AR080477A1 AR 080477 A1 AR080477 A1 AR 080477A1 AR P110100724 A ARP110100724 A AR P110100724A AR P110100724 A ARP110100724 A AR P110100724A AR 080477 A1 AR080477 A1 AR 080477A1
Authority
AR
Argentina
Prior art keywords
audio signal
filter bank
processing
channels
cascada
Prior art date
Application number
ARP110100724A
Other languages
English (en)
Original Assignee
Dten Forschung E V Fraunhofer Ges Zur Foerderung Der Angewan
Dolby Int Ab
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 Dten Forschung E V Fraunhofer Ges Zur Foerderung Der Angewan, Dolby Int Ab filed Critical Dten Forschung E V Fraunhofer Ges Zur Foerderung Der Angewan
Publication of AR080477A1 publication Critical patent/AR080477A1/es

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
    • G10L21/00—Speech or voice signal processing techniques 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
    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/0204—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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Networks Using Active Elements (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

Un aparato para procesar una senal de audio de entrada (2300) se basa en una cascada de bancos de filtros, cascada que comprende un banco de filtros de síntesis (2304) para sintetizar una senal de audio intermedia (2306) a partir de la senal de audio de entrada (2300), donde la senal de audio de entrada está representada por una pluralidad de senales de primera subbanda (2303) generadas por un banco de filtros de análisis (2302), donde el numero de canales de bancos de filtros del banco de filtros de síntesis (2304) es menor que un numero de canales del banco de filtros de análisis (2302). El aparato comprende además un banco de filtros de análisis adicional (2307) para generar una pluralidad de senales de segunda subbanda (2308) de la senal de audio intermedia (2306), donde el banco de filtros adicional tiene un numero de canales que difiere del numero de canales del banco de filtros síntesis (2304), por lo que la frecuencia de muestreo de una senal de subbanda de la pluralidad de senales de segunda subbanda (2308) es diferente de la frecuencia de muestreo de una primera senal de subbanda de la pluralidad de senales de primera subbanda (2303).
ARP110100724A 2010-03-09 2011-03-09 Aparato y metodo para procesar una senal de audio entrada utilizando bancos de filtro en cascada AR080477A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31212710P 2010-03-09 2010-03-09
PCT/EP2011/053315 WO2011110500A1 (en) 2010-03-09 2011-03-04 Apparatus and method for processing an input audio signal using cascaded filterbanks

Publications (1)

Publication Number Publication Date
AR080477A1 true AR080477A1 (es) 2012-04-11

Family

ID=43987731

Family Applications (2)

Application Number Title Priority Date Filing Date
ARP110100723A AR080476A1 (es) 2010-03-09 2011-03-09 Aparato y metodo para procesar una senal de audio usando alineacion de borde de patching
ARP110100724A AR080477A1 (es) 2010-03-09 2011-03-09 Aparato y metodo para procesar una senal de audio entrada utilizando bancos de filtro en cascada

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ARP110100723A AR080476A1 (es) 2010-03-09 2011-03-09 Aparato y metodo para procesar una senal de audio usando alineacion de borde de patching

Country Status (18)

Country Link
US (7) US9305557B2 (es)
EP (4) EP3570278B1 (es)
JP (2) JP5523589B2 (es)
KR (2) KR101425154B1 (es)
CN (2) CN102939628B (es)
AR (2) AR080476A1 (es)
AU (2) AU2011226212B2 (es)
BR (5) BR112012022574B1 (es)
CA (2) CA2792450C (es)
ES (2) ES2935637T3 (es)
HK (1) HK1181180A1 (es)
MX (2) MX2012010415A (es)
MY (1) MY154204A (es)
PL (2) PL3570278T3 (es)
RU (1) RU2586846C2 (es)
SG (1) SG183967A1 (es)
TW (2) TWI446337B (es)
WO (2) WO2011110499A1 (es)

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