MX9603416A - Metodo de codificacion de habla. - Google Patents

Metodo de codificacion de habla.

Info

Publication number
MX9603416A
MX9603416A MX9603416A MX9603416A MX9603416A MX 9603416 A MX9603416 A MX 9603416A MX 9603416 A MX9603416 A MX 9603416A MX 9603416 A MX9603416 A MX 9603416A MX 9603416 A MX9603416 A MX 9603416A
Authority
MX
Mexico
Prior art keywords
lsp
parameter
alpha
code
line spectrum
Prior art date
Application number
MX9603416A
Other languages
English (en)
Other versions
MXPA96003416A (es
Inventor
Masayuki Nishiguchi
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of MX9603416A publication Critical patent/MX9603416A/es
Publication of MXPA96003416A publication Critical patent/MXPA96003416A/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
    • G10L13/00—Speech synthesis; Text to speech systems
    • 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
    • G10L19/07—Line spectrum pair [LSP] 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
    • G10L19/04—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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/04—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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation
    • 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/24—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being the cepstrum

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Communication Control (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Golf Clubs (AREA)
  • Tires In General (AREA)

Abstract

Para ejecutar la codificacion de prediccion lineal de excitacion de codigo (CELP), por ejemplo, se toman alfa-parámetros de la señal de habla de entrada mediante un circuito 12 de análisis de codificacion de prediccion lineal (LPC). Los alfa-parámetros luego se convierten mediante una alfa-parámetro al circuito 13 de conversion de LSP en los parámetros del par espectral lineal (LSP) y un vector de estos parámetros del par espectral de línea (LSP) que cuantifica el vector mediante un cuantificador 14. El interruptor 16 de cambio se controla dependiendo del valor de densidad detectado mediante un circuito 22 de deteccion de densidad para seleccionar y usar uno de los libros de codigo 15M para voz masculina del libro de codigo 15F para voz femenina a fin de mejorar las características de cuantificacion sin aumentar el régimen de bit de transmision.
MXPA/A/1996/003416A 1994-12-21 1996-08-15 Metodo de codificacion de habla MXPA96003416A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP6-318689 1994-12-21
JP6318689A JPH08179796A (ja) 1994-12-21 1994-12-21 音声符号化方法
JP318,689 1994-12-21
PCT/JP1995/002607 WO1996019798A1 (fr) 1994-12-21 1995-12-19 Systeme de codage du son

Publications (2)

Publication Number Publication Date
MX9603416A true MX9603416A (es) 1997-12-31
MXPA96003416A MXPA96003416A (es) 1998-09-18

Family

ID=

Also Published As

Publication number Publication date
AU703046B2 (en) 1999-03-11
DE69529672D1 (de) 2003-03-27
EP0751494A1 (en) 1997-01-02
EP0751494B1 (en) 2003-02-19
MY112314A (en) 2001-05-31
AU4190196A (en) 1996-07-10
PL316008A1 (en) 1996-12-23
CN1141684A (zh) 1997-01-29
BR9506841A (pt) 1997-10-14
JPH08179796A (ja) 1996-07-12
KR970701410A (ko) 1997-03-17
TW367484B (en) 1999-08-21
CA2182790A1 (en) 1996-06-27
WO1996019798A1 (fr) 1996-06-27
TR199501637A2 (tr) 1996-07-21
ES2188679T3 (es) 2003-07-01
DE69529672T2 (de) 2003-12-18
ATE233008T1 (de) 2003-03-15
EP0751494A4 (en) 1998-12-30
US5950155A (en) 1999-09-07

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees