ES2194765T3 - Metodo de codificacion escalable para audio de alta calidad. - Google Patents

Metodo de codificacion escalable para audio de alta calidad.

Info

Publication number
ES2194765T3
ES2194765T3 ES00955365T ES00955365T ES2194765T3 ES 2194765 T3 ES2194765 T3 ES 2194765T3 ES 00955365 T ES00955365 T ES 00955365T ES 00955365 T ES00955365 T ES 00955365T ES 2194765 T3 ES2194765 T3 ES 2194765T3
Authority
ES
Spain
Prior art keywords
signal
subband
coding method
quantization resolution
scalable coding
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
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ES00955365T
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English (en)
Inventor
Louis Dunn Fielder
Stephen Decker Vernon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing 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
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Application granted granted Critical
Publication of ES2194765T3 publication Critical patent/ES2194765T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L19/02—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
    • G10L19/02—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
    • G10L19/0208—Subband vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Un procedimiento de codificación escalable que usa un canal (300;701) de datos estándar que tiene una capa (310;710) del núcleo y una capa (320;720) de ampliación, comprendiendo el procedimiento: recibir una diversidad de señales de subbanda; determinar una primera resolución de cuantificación respectiva para cada señal de subbanda en respuesta a un primer espectro de ruido deseado y cuantificando cada señal de subbanda según la primera resolución de cuantificación respectiva para generar una primera señal codificada; determinar una segunda resolución de cuantificación respectiva para cada señal de subbanda en respuesta a un segundo espectro de ruido deseado y cuantificando cada señal de subbanda según la segunda resolución de cuantificación respectiva para generar una segunda señal codificada; generar una señal residual que indique un residuo entre la primera y segunda señales codificadas; y producir la primera señal codificada en la capa del núcleo y la señal residual en la capa de ampliación.
ES00955365T 1999-08-09 2000-08-04 Metodo de codificacion escalable para audio de alta calidad. Expired - Lifetime ES2194765T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/370,562 US6446037B1 (en) 1999-08-09 1999-08-09 Scalable coding method for high quality audio

Publications (1)

Publication Number Publication Date
ES2194765T3 true ES2194765T3 (es) 2003-12-01

Family

ID=23460204

Family Applications (1)

Application Number Title Priority Date Filing Date
ES00955365T Expired - Lifetime ES2194765T3 (es) 1999-08-09 2000-08-04 Metodo de codificacion escalable para audio de alta calidad.

Country Status (13)

Country Link
US (1) US6446037B1 (es)
EP (1) EP1210712B1 (es)
JP (1) JP4731774B2 (es)
KR (1) KR100903017B1 (es)
CN (1) CN1153191C (es)
AT (1) ATE239291T1 (es)
AU (1) AU774862B2 (es)
CA (1) CA2378991A1 (es)
DE (1) DE60002483T2 (es)
DK (1) DK1210712T3 (es)
ES (1) ES2194765T3 (es)
TW (1) TW526470B (es)
WO (1) WO2001011609A1 (es)

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ATE239291T1 (de) 2003-05-15
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CN1153191C (zh) 2004-06-09
EP1210712A1 (en) 2002-06-05
JP4731774B2 (ja) 2011-07-27
JP2003506763A (ja) 2003-02-18
CN1369092A (zh) 2002-09-11
AU774862B2 (en) 2004-07-08
DE60002483T2 (de) 2004-03-25
WO2001011609A1 (en) 2001-02-15
CA2378991A1 (en) 2001-02-15
US6446037B1 (en) 2002-09-03
DE60002483D1 (de) 2003-06-05
EP1210712B1 (en) 2003-05-02
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