MX2015009171A - Ajuste de nivel en el dominio del tiempo para descodificacion o codificacion de señales de audio. - Google Patents

Ajuste de nivel en el dominio del tiempo para descodificacion o codificacion de señales de audio.

Info

Publication number
MX2015009171A
MX2015009171A MX2015009171A MX2015009171A MX2015009171A MX 2015009171 A MX2015009171 A MX 2015009171A MX 2015009171 A MX2015009171 A MX 2015009171A MX 2015009171 A MX2015009171 A MX 2015009171A MX 2015009171 A MX2015009171 A MX 2015009171A
Authority
MX
Mexico
Prior art keywords
audio signal
time
level shift
representation
frequency band
Prior art date
Application number
MX2015009171A
Other languages
English (en)
Other versions
MX346358B (es
Inventor
Matthias Neusinger
Markus Lohwasser
Manuel Jander
Bernhard Neugebauer
Stephan Schreiner
Arne Borsum
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 MX2015009171A publication Critical patent/MX2015009171A/es
Publication of MX346358B publication Critical patent/MX346358B/es

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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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • 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
    • G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis
    • 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
    • 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
    • G10L21/0224—Processing in the time 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
    • 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
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0324—Details of processing therefor
    • G10L21/0332—Details of processing therefor involving modification of waveforms
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0324—Details of processing therefor
    • G10L21/034—Automatic adjustment

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

Un descodificador de señales de audio (100) para proporcionar una representación de señal de audio descodificada con base en una representación de señal de audio codificada comprende una etapa de pre-procesamiento de descodificador (110) para obtener una pluralidad de señales de banda de frecuencia de la representación de la señal de audio codificada, un estimador de recorte (120), un cambiador de nivel (130), un convertidor del dominio de la frecuencia al dominio del tiempo (140), y un compensador de cambio de nivel (150). El estimador de recorte (120) analiza la representación de señal de audio codificada y/o la información adicional con respecto a una ganancia de las señales de banda de frecuencia a fin de determinar un factor de cambio de nivel actual. El cambiador de nivel (130) cambia los niveles de las señales de banda de frecuencia de acuerdo al factor de cambio de nivel. El convertidor del dominio de la frecuencia al dominio del tiempo (140) convierte las señales de banda de frecuencia cambiadas de nivel a una representación en el dominio del tiempo. El compensador de cambio de nivel (150) actúa sobre la representación en el dominio del tiempo para compensar al menos parcialmente un cambio de nivel correspondiente y para obtener una representación en el dominio del tiempo sustancialmente compensada.
MX2015009171A 2013-01-18 2014-01-07 Ajuste de nivel en el dominio del tiempo para descodificacion o codificacion de señales de audio. MX346358B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13151910.0A EP2757558A1 (en) 2013-01-18 2013-01-18 Time domain level adjustment for audio signal decoding or encoding
PCT/EP2014/050171 WO2014111290A1 (en) 2013-01-18 2014-01-07 Time domain level adjustment for audio signal decoding or encoding

Publications (2)

Publication Number Publication Date
MX2015009171A true MX2015009171A (es) 2015-11-09
MX346358B MX346358B (es) 2017-03-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2015009171A MX346358B (es) 2013-01-18 2014-01-07 Ajuste de nivel en el dominio del tiempo para descodificacion o codificacion de señales de audio.

Country Status (11)

Country Link
US (1) US9830915B2 (es)
EP (2) EP2757558A1 (es)
JP (1) JP6184519B2 (es)
KR (2) KR101953648B1 (es)
CN (1) CN105210149B (es)
BR (1) BR112015017293B1 (es)
CA (1) CA2898005C (es)
ES (1) ES2604983T3 (es)
MX (1) MX346358B (es)
RU (1) RU2608878C1 (es)
WO (1) WO2014111290A1 (es)

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Also Published As

Publication number Publication date
CA2898005C (en) 2018-08-14
KR20150106929A (ko) 2015-09-22
BR112015017293B1 (pt) 2021-12-21
CN105210149A (zh) 2015-12-30
EP2946384B1 (en) 2016-11-02
ES2604983T3 (es) 2017-03-10
KR20170104661A (ko) 2017-09-15
EP2946384A1 (en) 2015-11-25
KR101953648B1 (ko) 2019-05-23
RU2608878C1 (ru) 2017-01-25
WO2014111290A1 (en) 2014-07-24
JP6184519B2 (ja) 2017-08-23
JP2016505168A (ja) 2016-02-18
CA2898005A1 (en) 2014-07-24
CN105210149B (zh) 2019-08-30
MX346358B (es) 2017-03-15
US20160019898A1 (en) 2016-01-21
BR112015017293A2 (pt) 2018-05-15
US9830915B2 (en) 2017-11-28
EP2757558A1 (en) 2014-07-23

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