HK137096A - Speech processor - Google Patents

Speech processor

Info

Publication number
HK137096A
HK137096A HK137096A HK137096A HK137096A HK 137096 A HK137096 A HK 137096A HK 137096 A HK137096 A HK 137096A HK 137096 A HK137096 A HK 137096A HK 137096 A HK137096 A HK 137096A
Authority
HK
Hong Kong
Prior art keywords
speech
template
background noise
word
stored
Prior art date
Application number
HK137096A
Other languages
English (en)
Inventor
Nicholas John Arnold Forse
Original Assignee
British Telecomm
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 Telecomm filed Critical British Telecomm
Publication of HK137096A publication Critical patent/HK137096A/xx

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)
  • Noise Elimination (AREA)
  • Telephonic Communication Services (AREA)
  • Circuits Of Receivers In General (AREA)
  • Facsimiles In General (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Machine Translation (AREA)
  • Analogue/Digital Conversion (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Telephone Function (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Sewing Machines And Sewing (AREA)
HK137096A 1986-06-02 1996-07-25 Speech processor HK137096A (en)

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
HK137096A true HK137096A (en) 1996-08-02

Family

ID=10598774

Family Applications (1)

Application Number Title Priority Date Filing Date
HK137096A HK137096A (en) 1986-06-02 1996-07-25 Speech processor

Country Status (13)

Country Link
US (1) US4912766A (da)
EP (2) EP0750291B1 (da)
JP (3) JP2561850B2 (da)
KR (1) KR950011963B1 (da)
AT (2) ATE109582T1 (da)
CA (1) CA1310418C (da)
DE (2) DE3750314T2 (da)
DK (1) DK171426B1 (da)
ES (1) ES2056819T3 (da)
FI (1) FI92113C (da)
GB (1) GB8613327D0 (da)
HK (1) HK137096A (da)
WO (1) WO1987007750A1 (da)

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US7949520B2 (en) 2004-10-26 2011-05-24 QNX Software Sytems Co. Adaptive filter pitch extraction
US8306821B2 (en) 2004-10-26 2012-11-06 Qnx Software Systems Limited Sub-band periodic signal enhancement system
US8543390B2 (en) 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
US8284947B2 (en) 2004-12-01 2012-10-09 Qnx Software Systems Limited Reverberation estimation and suppression system
US20060146652A1 (en) * 2005-01-03 2006-07-06 Sdi Technologies, Inc. Sunset timer
US8027833B2 (en) 2005-05-09 2011-09-27 Qnx Software Systems Co. System for suppressing passing tire hiss
US8170875B2 (en) 2005-06-15 2012-05-01 Qnx Software Systems Limited Speech end-pointer
US8311819B2 (en) 2005-06-15 2012-11-13 Qnx Software Systems Limited System for detecting speech with background voice estimates and noise estimates
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Also Published As

Publication number Publication date
CA1310418C (en) 1992-11-17
DE3752288D1 (de) 1999-09-09
ES2056819T3 (es) 1994-10-16
JPH0677894A (ja) 1994-03-18
KR950011963B1 (ko) 1995-10-12
JP2654503B2 (ja) 1997-09-17
DE3752288T2 (de) 2000-07-06
DK282587A (da) 1987-12-03
EP0750291B1 (en) 1999-08-04
ATE183009T1 (de) 1999-08-15
ATE109582T1 (de) 1994-08-15
US4912766A (en) 1990-03-27
DE3750314T2 (de) 1994-11-17
FI92113C (fi) 1994-09-26
WO1987007750A1 (en) 1987-12-17
DE3750314D1 (de) 1994-09-08
DK282587D0 (da) 1987-06-02
KR880701435A (ko) 1988-07-27
EP0248609A1 (en) 1987-12-09
FI92113B (fi) 1994-06-15
DK171426B1 (da) 1996-10-21
EP0248609B1 (en) 1994-08-03
JPS63503487A (ja) 1988-12-15
GB8613327D0 (en) 1986-07-09
EP0750291A1 (en) 1996-12-27
FI872450A (fi) 1987-12-03
FI872450A0 (fi) 1987-06-02
JP2561850B2 (ja) 1996-12-11
JPH09325790A (ja) 1997-12-16

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)