ES2056819T3 - Procesador de habla. - Google Patents

Procesador de habla.

Info

Publication number
ES2056819T3
ES2056819T3 ES87304793T ES87304793T ES2056819T3 ES 2056819 T3 ES2056819 T3 ES 2056819T3 ES 87304793 T ES87304793 T ES 87304793T ES 87304793 T ES87304793 T ES 87304793T ES 2056819 T3 ES2056819 T3 ES 2056819T3
Authority
ES
Spain
Prior art keywords
agc
voice recognition
processor
speaking
stored
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
ES87304793T
Other languages
English (en)
Inventor
Nicholas John Arnold Forse
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2056819T3 publication Critical patent/ES2056819T3/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
    • G10L15/00—Speech recognition
    • G10L15/28—Constructional details of speech recognition 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
    • G10L15/00—Speech recognition
    • G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
    • 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
    • G10L15/00—Speech recognition
    • 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
    • G10L25/78—Detection of presence or absence of voice signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses
    • 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
    • G10L25/18—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 spectral information of each sub-band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Facsimiles In General (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)
  • Telephonic Communication Services (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Machine Translation (AREA)
  • Analogue/Digital Conversion (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Sewing Machines And Sewing (AREA)
  • Telephone Function (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

EN UN PROCESADOR DE VOZ, COMO PUEDE SER UN RECONOCEDOR DE VOZ, EL PROBLEMA DE LA DISTORSION DE LAS CARACTERISTICAS EXTRAIDAS, PROVOCADO POR LA ADAPTACION DEL CONTROL AUTOMATICO DE GANANCIA DE LA ENTRADA (AGC) DURANTE LA EXTRACCION, SE RESUELVE ALMACENANDO EL COEFICIENTE DE GANANCIA AGC JUNTO CON EL NIVEL ENERGETICO DE CADA CARACTERISTICA EXTRAIDA. AL FINAL DEL MUESTREO, LOS COEFICIENTES DE GANANCIA ALMACENADOS SE IGUALAN AL COEFICIENTE MINIMO ALMACENADO, AJUSTANDOSE ACORDEMENTE LOS NIVELES DE ENERGIA ASOCIADOS. EL CIRCUITO AGC PUEDE CONSTAR DE UN ATENUADOR CONMUTADO DIGITALMENTE BAJO CONTROL DE UN MICROPROCESADOR QUE EFECTUA EL RECONOCIMIENTO DE LA VOZ.
ES87304793T 1986-06-02 1987-05-29 Procesador de habla. Expired - Lifetime ES2056819T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868613327A GB8613327D0 (en) 1986-06-02 1986-06-02 Speech processor

Publications (1)

Publication Number Publication Date
ES2056819T3 true ES2056819T3 (es) 1994-10-16

Family

ID=10598774

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87304793T Expired - Lifetime ES2056819T3 (es) 1986-06-02 1987-05-29 Procesador de habla.

Country Status (13)

Country Link
US (1) US4912766A (es)
EP (2) EP0248609B1 (es)
JP (3) JP2561850B2 (es)
KR (1) KR950011963B1 (es)
AT (2) ATE183009T1 (es)
CA (1) CA1310418C (es)
DE (2) DE3750314T2 (es)
DK (1) DK171426B1 (es)
ES (1) ES2056819T3 (es)
FI (1) FI92113C (es)
GB (1) GB8613327D0 (es)
HK (1) HK137096A (es)
WO (1) WO1987007750A1 (es)

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US8326621B2 (en) 2003-02-21 2012-12-04 Qnx Software Systems Limited Repetitive transient noise removal
US8271279B2 (en) 2003-02-21 2012-09-18 Qnx Software Systems Limited Signature noise removal
US7949522B2 (en) 2003-02-21 2011-05-24 Qnx Software Systems Co. System for suppressing rain noise
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Also Published As

Publication number Publication date
DE3750314T2 (de) 1994-11-17
ATE183009T1 (de) 1999-08-15
HK137096A (en) 1996-08-02
JPH0677894A (ja) 1994-03-18
JPH09325790A (ja) 1997-12-16
JP2561850B2 (ja) 1996-12-11
CA1310418C (en) 1992-11-17
FI872450A0 (fi) 1987-06-02
KR880701435A (ko) 1988-07-27
WO1987007750A1 (en) 1987-12-17
DE3750314D1 (de) 1994-09-08
FI92113B (fi) 1994-06-15
GB8613327D0 (en) 1986-07-09
ATE109582T1 (de) 1994-08-15
JPS63503487A (ja) 1988-12-15
US4912766A (en) 1990-03-27
FI872450L (fi) 1987-12-03
DK282587A (da) 1987-12-03
DE3752288T2 (de) 2000-07-06
EP0750291A1 (en) 1996-12-27
JP2654503B2 (ja) 1997-09-17
EP0750291B1 (en) 1999-08-04
DK282587D0 (da) 1987-06-02
EP0248609A1 (en) 1987-12-09
KR950011963B1 (ko) 1995-10-12
DK171426B1 (da) 1996-10-21
EP0248609B1 (en) 1994-08-03
FI92113C (fi) 1994-09-26
DE3752288D1 (de) 1999-09-09

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