MX9706885A - Busqueda de libro de codigo algebraico de primera profundidad para rapido cifrado de sonido vocal. - Google Patents

Busqueda de libro de codigo algebraico de primera profundidad para rapido cifrado de sonido vocal.

Info

Publication number
MX9706885A
MX9706885A MX9706885A MX9706885A MX9706885A MX 9706885 A MX9706885 A MX 9706885A MX 9706885 A MX9706885 A MX 9706885A MX 9706885 A MX9706885 A MX 9706885A MX 9706885 A MX9706885 A MX 9706885A
Authority
MX
Mexico
Prior art keywords
path
pulse
search
positions
candidate
Prior art date
Application number
MX9706885A
Other languages
English (en)
Inventor
Jean Pierre Adoul
Claude Laflamme
Original Assignee
Univ Sherbrooke
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27017596&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX9706885(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Univ Sherbrooke filed Critical Univ Sherbrooke
Publication of MX9706885A publication Critical patent/MX9706885A/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
    • G10L19/04—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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • 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
    • G10L2019/0007—Codebook element generation
    • G10L2019/0008—Algebraic codebooks
    • 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
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L2019/0013—Codebook search algorithms
    • 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
    • G10L2019/0013—Codebook search algorithms
    • G10L2019/0014—Selection criteria for distances
    • 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
    • G10L25/06—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 correlation coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Complex Calculations (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Se busca un libro de codigos con relacion a la codificacion de una señal sonora. Este libro de codigos consiste de un conjunto de vectores de codigo cada uno de 40posiciones y que comprende N pulsos de amplitud diferentes de cero asignables a posiciones válidas predeterminadas. Para reducir la complejidad de la busqueda, se utiliza busqueda de primera profundidad la cual implica una estructura de árbol con niveles ordenados desde 1 hasta M. Se efectua una operacion de construccion de trayectoria en cada nivel con lo cual una trayectoria candidata del nivel anterior de extiende eligiendo un numero predeterminado de nuevos pulsos y seleccionando posiciones válidas para tales nuevos pulsos de acuerdo con una regla de orden de pulso y criterio de seleccion dados. Una trayectoria originada en el primer nivel y extendida por medio de las operaciones de construccion de trayectoria de niveles subsecuentes determina las posiciones respectivas del N pulso de amplitud diferente de cero de un vector de codigos candidato. El uso de un cálculo probabilístico de posiciones de pulso basados en una señal durante los primeros pocos niveles de filtracion inicial de pulsos inicie la busqueda en condiciones favorables. Se utiliza un criterio de seleccion basado en maximizar una proporcion para elevar el avance y seleccionar el mejor de entre los vectores de codigos candidatos que compiten.
MX9706885A 1995-03-10 1996-03-05 Busqueda de libro de codigo algebraico de primera profundidad para rapido cifrado de sonido vocal. MX9706885A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US40178595A 1995-03-10 1995-03-10
US08/509,525 US5701392A (en) 1990-02-23 1995-07-31 Depth-first algebraic-codebook search for fast coding of speech
PCT/CA1996/000135 WO1996028810A1 (en) 1995-03-10 1996-03-05 Depth-first algebraic-codebook search for fast coding of speech

Publications (1)

Publication Number Publication Date
MX9706885A true MX9706885A (es) 1998-03-31

Family

ID=27017596

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9706885A MX9706885A (es) 1995-03-10 1996-03-05 Busqueda de libro de codigo algebraico de primera profundidad para rapido cifrado de sonido vocal.

Country Status (24)

Country Link
US (1) US5701392A (es)
EP (1) EP0813736B1 (es)
JP (1) JP3160852B2 (es)
KR (1) KR100299408B1 (es)
CN (1) CN1114900C (es)
AR (1) AR001189A1 (es)
AT (1) ATE193392T1 (es)
AU (1) AU707307B2 (es)
BR (1) BR9607144A (es)
CA (1) CA2213740C (es)
DE (1) DE19609170B4 (es)
DK (1) DK0813736T3 (es)
ES (1) ES2112808B1 (es)
FR (1) FR2731548B1 (es)
GB (1) GB2299001B (es)
HK (1) HK1001846A1 (es)
IN (1) IN187842B (es)
IT (1) IT1285305B1 (es)
MX (1) MX9706885A (es)
MY (1) MY119252A (es)
PT (1) PT813736E (es)
RU (1) RU2175454C2 (es)
SE (1) SE520554C2 (es)
WO (1) WO1996028810A1 (es)

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JPH11501131A (ja) 1999-01-26
RU2175454C2 (ru) 2001-10-27
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ITTO960174A1 (it) 1997-09-08
FR2731548A1 (fr) 1996-09-13
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