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ES2160772T3 - Enmascaramiento de ruido perceptual basado en la respuesta en frecuencia de un filtro de sintesis. - Google Patents

Enmascaramiento de ruido perceptual basado en la respuesta en frecuencia de un filtro de sintesis.

Info

Publication number
ES2160772T3
ES2160772T3 ES96306757T ES96306757T ES2160772T3 ES 2160772 T3 ES2160772 T3 ES 2160772T3 ES 96306757 T ES96306757 T ES 96306757T ES 96306757 T ES96306757 T ES 96306757T ES 2160772 T3 ES2160772 T3 ES 2160772T3
Authority
ES
Spain
Prior art keywords
tpc
frequency response
synthesis filter
bits
mask based
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
Application number
ES96306757T
Other languages
English (en)
Inventor
Juin-Hwey Chen
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.)
AT&T Corp
Original Assignee
AT&T 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
Application filed by AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2160772T3 publication Critical patent/ES2160772T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L19/02—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
    • G10L19/0212—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 orthogonal transformation
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

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)

Abstract

UN SISTEMA DE COMPRESION DEL HABLA LLAMADO "TRANSFORM PREDICTIVE CODING", O TPC SUMINISTRA LA CODIFICACION DEL HABLA EN BANDA ANCHA DE 7 KHZ (MUESTREO DE 16 KHZ) EN UNA BANDA DE VELOCIDAD DE BITS DE OBJETIVO DE ENTRE 16 Y 32 KB/S (DE 1 A 2 BITS/MUESTRA). EL SISTEMA UTILIZA UNA PREDICCION A CORTO Y A LARGO PLAZO PARA ELIMINAR LA REDUNDANCIA EN EL HABLA. UN RESIDUAL DE PREDICCION SE TRANSFORMA Y SE CODIFICA EN EL DOMINANTE DE LA FRECUENCIA PARA SACAR PARTIDO DEL CONOCIMIENTO DE LA PERCEPCION AUDITIVA HUMANA. EL CODIFICADOR TPC UTILIZA SOLAMENTE CUANTIFICACION DE CIRCUITO ABIERTO Y POR LO TANTO TIENE UNA COMPLEJIDAD EMINENTEMENTE BAJA. LA CALIDAD DEL HABLA DE TPC ES ESENCIALMENTE TRANSPARENTE A 32 KB/S, MUY BUENA A 24 KB/S Y ACEPTABLE A 16 KB/S.
ES96306757T 1995-09-19 1996-09-17 Enmascaramiento de ruido perceptual basado en la respuesta en frecuencia de un filtro de sintesis. Expired - Lifetime ES2160772T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/530,981 US5790759A (en) 1995-09-19 1995-09-19 Perceptual noise masking measure based on synthesis filter frequency response

Publications (1)

Publication Number Publication Date
ES2160772T3 true ES2160772T3 (es) 2001-11-16

Family

ID=24115777

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96306757T Expired - Lifetime ES2160772T3 (es) 1995-09-19 1996-09-17 Enmascaramiento de ruido perceptual basado en la respuesta en frecuencia de un filtro de sintesis.

Country Status (7)

Country Link
US (1) US5790759A (es)
EP (1) EP0764938B1 (es)
JP (1) JPH09152895A (es)
CA (1) CA2185746C (es)
DE (1) DE69615302T2 (es)
ES (1) ES2160772T3 (es)
MX (1) MX9604159A (es)

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US6778953B1 (en) * 2000-06-02 2004-08-17 Agere Systems Inc. Method and apparatus for representing masked thresholds in a perceptual audio coder
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US7171355B1 (en) * 2000-10-25 2007-01-30 Broadcom Corporation Method and apparatus for one-stage and two-stage noise feedback coding of speech and audio signals
ES2260426T3 (es) * 2001-05-08 2006-11-01 Koninklijke Philips Electronics N.V. Codificacion de audio.
US7110942B2 (en) * 2001-08-14 2006-09-19 Broadcom Corporation Efficient excitation quantization in a noise feedback coding system using correlation techniques
US7240001B2 (en) * 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
US7206740B2 (en) * 2002-01-04 2007-04-17 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
US7529661B2 (en) * 2002-02-06 2009-05-05 Broadcom Corporation Pitch extraction methods and systems for speech coding using quadratically-interpolated and filtered peaks for multiple time lag extraction
US7236927B2 (en) * 2002-02-06 2007-06-26 Broadcom Corporation Pitch extraction methods and systems for speech coding using interpolation techniques
US7752037B2 (en) * 2002-02-06 2010-07-06 Broadcom Corporation Pitch extraction methods and systems for speech coding using sub-multiple time lag extraction
US7398204B2 (en) * 2002-08-27 2008-07-08 Her Majesty In Right Of Canada As Represented By The Minister Of Industry Bit rate reduction in audio encoders by exploiting inharmonicity effects and auditory temporal masking
US7502743B2 (en) * 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
EP1513137A1 (en) * 2003-08-22 2005-03-09 MicronasNIT LCC, Novi Sad Institute of Information Technologies Speech processing system and method with multi-pulse excitation
FR2859566B1 (fr) * 2003-09-05 2010-11-05 Eads Telecom Procede de transmission d'un flux d'information par insertion a l'interieur d'un flux de donnees de parole, et codec parametrique pour sa mise en oeuvre
US7460990B2 (en) 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
US8473286B2 (en) * 2004-02-26 2013-06-25 Broadcom Corporation Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure
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WO2007098258A1 (en) * 2006-02-24 2007-08-30 Neural Audio Corporation Audio codec conditioning system and method
JP2009539132A (ja) * 2006-05-30 2009-11-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ オーディオ信号の線形予測符号化
US9159333B2 (en) 2006-06-21 2015-10-13 Samsung Electronics Co., Ltd. Method and apparatus for adaptively encoding and decoding high frequency band
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ATE518224T1 (de) * 2008-01-04 2011-08-15 Dolby Int Ab Audiokodierer und -dekodierer
US9117458B2 (en) * 2009-11-12 2015-08-25 Lg Electronics Inc. Apparatus for processing an audio signal and method thereof
US20140358565A1 (en) 2013-05-29 2014-12-04 Qualcomm Incorporated Compression of decomposed representations of a sound field
US9922656B2 (en) 2014-01-30 2018-03-20 Qualcomm Incorporated Transitioning of ambient higher-order ambisonic coefficients
US9502045B2 (en) 2014-01-30 2016-11-22 Qualcomm Incorporated Coding independent frames of ambient higher-order ambisonic coefficients
US9620137B2 (en) 2014-05-16 2017-04-11 Qualcomm Incorporated Determining between scalar and vector quantization in higher order ambisonic coefficients
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Also Published As

Publication number Publication date
EP0764938B1 (en) 2001-09-19
CA2185746A1 (en) 1997-03-20
CA2185746C (en) 2001-06-05
JPH09152895A (ja) 1997-06-10
EP0764938A3 (en) 1998-06-10
EP0764938A2 (en) 1997-03-26
US5790759A (en) 1998-08-04
MX9604159A (es) 1997-03-29
DE69615302D1 (de) 2001-10-25
DE69615302T2 (de) 2002-07-04

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