MX9604159A - Medicion de enmascaramiento de ruido perceptual basado en la respuesta de frecuencia del filtro de sintesis. - Google Patents

Medicion de enmascaramiento de ruido perceptual basado en la respuesta de frecuencia del filtro de sintesis.

Info

Publication number
MX9604159A
MX9604159A MX9604159A MX9604159A MX9604159A MX 9604159 A MX9604159 A MX 9604159A MX 9604159 A MX9604159 A MX 9604159A MX 9604159 A MX9604159 A MX 9604159A MX 9604159 A MX9604159 A MX 9604159A
Authority
MX
Mexico
Prior art keywords
speech
tpc
frequency response
measured based
synthesis filter
Prior art date
Application number
MX9604159A
Other languages
English (en)
Inventor
Juin-Hwey Chen
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
Publication of MX9604159A publication Critical patent/MX9604159A/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
    • 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

Se proporciona un sistema de comprension de habla denominado "Transformacion de Codificacion Predictiva" o TPC, que proporciona codificacion de habla de ancho de banda de 7 kHz (muestreo de 16 kHz) en un alcance de velocidad de bitios objetivo de 16 a 32 kb/s (1 a 2 bitios/muestra). El sistema utiliza la prediccion a corto plazo y largo plazo para eliminar redundancia en el habla. Una residual de prediccion se transforma y se codifica en el dominio de frecuencia para tomar ventaja del conocimiento en la percepcion auditiva humana. El codificador de TPC utiliza unicamente la cuantificacion de circuito abierto y por lo tanto tiene una complejidlmente transparente a 32 kb/s, muy buena a 24 kb/s y aceptable a 16 kb/s.
MX9604159A 1995-09-19 1996-09-18 Medicion de enmascaramiento de ruido perceptual basado en la respuesta de frecuencia del filtro de sintesis. MX9604159A (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
MX9604159A true MX9604159A (es) 1997-03-29

Family

ID=24115777

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9604159A MX9604159A (es) 1995-09-19 1996-09-18 Medicion de enmascaramiento de ruido perceptual basado en la respuesta de frecuencia del 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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US7206740B2 (en) * 2002-01-04 2007-04-17 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
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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
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DE602007003023D1 (de) * 2006-05-30 2009-12-10 Koninkl Philips Electronics Nv Linear-prädiktive codierung eines audiosignals
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Also Published As

Publication number Publication date
DE69615302D1 (de) 2001-10-25
EP0764938A2 (en) 1997-03-26
EP0764938A3 (en) 1998-06-10
ES2160772T3 (es) 2001-11-16
EP0764938B1 (en) 2001-09-19
JPH09152895A (ja) 1997-06-10
US5790759A (en) 1998-08-04
DE69615302T2 (de) 2002-07-04
CA2185746C (en) 2001-06-05
CA2185746A1 (en) 1997-03-20

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