FI904410A0 - UTTRYCK FOER LJUDETS ACTIVITIES. - Google Patents

UTTRYCK FOER LJUDETS ACTIVITIES.

Info

Publication number
FI904410A0
FI904410A0 FI904410A FI904410A FI904410A0 FI 904410 A0 FI904410 A0 FI 904410A0 FI 904410 A FI904410 A FI 904410A FI 904410 A FI904410 A FI 904410A FI 904410 A0 FI904410 A0 FI 904410A0
Authority
FI
Finland
Prior art keywords
input signal
measure
uttryck
ljudets
foer
Prior art date
Application number
FI904410A
Other languages
Finnish (fi)
Other versions
FI110726B (en
Inventor
Daniel Kenneth Freeman
Ivan Boyd
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
Priority claimed from GB888805795A external-priority patent/GB8805795D0/en
Priority claimed from GB888813346A external-priority patent/GB8813346D0/en
Priority claimed from GB888820105A external-priority patent/GB8820105D0/en
Application filed by British Telecomm filed Critical British Telecomm
Publication of FI904410A0 publication Critical patent/FI904410A0/en
Application granted granted Critical
Publication of FI110726B publication Critical patent/FI110726B/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise

Abstract

The first aspect provides a voice activity detection appts. for receiving an input signal, estimating the noise signal component of the input signal and continually forming a measure M of the spectral similarity between a portion of the input signal and the noise signal. A circuit is provided to compare a parameter derived from the measure M with a threshold value T to produce an output to indicate the presence, or absence, of speech depending on whether, or not, that value is exceeded. A second aspect covers voice activity detection appts. which continually forms a spectral distortion measure and carries out a comparison.
FI904410A 1988-03-11 1990-09-07 Detection of voice activity FI110726B (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB8805795 1988-03-11
GB888805795A GB8805795D0 (en) 1988-03-11 1988-03-11 Voice activity detector
GB8813346 1988-06-06
GB888813346A GB8813346D0 (en) 1988-06-06 1988-06-06 Voice activity detection
GB8820105 1988-08-24
GB888820105A GB8820105D0 (en) 1988-08-24 1988-08-24 Voice activity detection
PCT/GB1989/000247 WO1989008910A1 (en) 1988-03-11 1989-03-10 Voice activity detection
GB8900247 1989-03-10

Publications (2)

Publication Number Publication Date
FI904410A0 true FI904410A0 (en) 1990-09-07
FI110726B FI110726B (en) 2003-03-14

Family

ID=27263821

Family Applications (2)

Application Number Title Priority Date Filing Date
FI904410A FI110726B (en) 1988-03-11 1990-09-07 Detection of voice activity
FI20010933A FI115328B (en) 1988-03-11 2001-05-04 Expression for sound activity

Family Applications After (1)

Application Number Title Priority Date Filing Date
FI20010933A FI115328B (en) 1988-03-11 2001-05-04 Expression for sound activity

Country Status (16)

Country Link
EP (2) EP0548054B1 (en)
JP (2) JP3321156B2 (en)
KR (1) KR0161258B1 (en)
AU (1) AU608432B2 (en)
BR (1) BR8907308A (en)
CA (1) CA1335003C (en)
DE (2) DE68910859T2 (en)
DK (1) DK175478B1 (en)
ES (2) ES2188588T3 (en)
FI (2) FI110726B (en)
HK (1) HK135896A (en)
IE (1) IE61863B1 (en)
NO (2) NO304858B1 (en)
NZ (1) NZ228290A (en)
PT (1) PT89978B (en)
WO (1) WO1989008910A1 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2643593B2 (en) * 1989-11-28 1997-08-20 日本電気株式会社 Voice / modem signal identification circuit
CA2040025A1 (en) * 1990-04-09 1991-10-10 Hideki Satoh Speech detection apparatus with influence of input level and noise reduced
US5241692A (en) * 1991-02-19 1993-08-31 Motorola, Inc. Interference reduction system for a speech recognition device
FR2697101B1 (en) * 1992-10-21 1994-11-25 Sextant Avionique Speech detection method.
SE470577B (en) * 1993-01-29 1994-09-19 Ericsson Telefon Ab L M Method and apparatus for encoding and / or decoding background noise
JPH06332492A (en) * 1993-05-19 1994-12-02 Matsushita Electric Ind Co Ltd Method and device for voice detection
SE501305C2 (en) * 1993-05-26 1995-01-09 Ericsson Telefon Ab L M Method and apparatus for discriminating between stationary and non-stationary signals
EP0633658A3 (en) * 1993-07-06 1996-01-17 Hughes Aircraft Co Voice activated transmission coupled AGC circuit.
IN184794B (en) * 1993-09-14 2000-09-30 British Telecomm
SE501981C2 (en) * 1993-11-02 1995-07-03 Ericsson Telefon Ab L M Method and apparatus for discriminating between stationary and non-stationary signals
US5742734A (en) * 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
FR2727236B1 (en) * 1994-11-22 1996-12-27 Alcatel Mobile Comm France DETECTION OF VOICE ACTIVITY
WO1996034382A1 (en) * 1995-04-28 1996-10-31 Northern Telecom Limited Methods and apparatus for distinguishing speech intervals from noise intervals in audio signals
GB2306010A (en) * 1995-10-04 1997-04-23 Univ Wales Medicine A method of classifying signals
FR2739995B1 (en) * 1995-10-13 1997-12-12 Massaloux Dominique METHOD AND DEVICE FOR CREATING COMFORT NOISE IN A DIGITAL SPEECH TRANSMISSION SYSTEM
US5794199A (en) * 1996-01-29 1998-08-11 Texas Instruments Incorporated Method and system for improved discontinuous speech transmission
DE69716266T2 (en) * 1996-07-03 2003-06-12 British Telecomm VOICE ACTIVITY DETECTOR
US6618701B2 (en) 1999-04-19 2003-09-09 Motorola, Inc. Method and system for noise suppression using external voice activity detection
DE10052626A1 (en) * 2000-10-24 2002-05-02 Alcatel Sa Adaptive noise level estimator
CN1617606A (en) * 2003-11-12 2005-05-18 皇家飞利浦电子股份有限公司 Method and device for transmitting non voice data in voice channel
US7139701B2 (en) * 2004-06-30 2006-11-21 Motorola, Inc. Method for detecting and attenuating inhalation noise in a communication system
US7155388B2 (en) * 2004-06-30 2006-12-26 Motorola, Inc. Method and apparatus for characterizing inhalation noise and calculating parameters based on the characterization
FI20045315A (en) * 2004-08-30 2006-03-01 Nokia Corp Detection of voice activity in an audio signal
US8708702B2 (en) * 2004-09-16 2014-04-29 Lena Foundation Systems and methods for learning using contextual feedback
US8775168B2 (en) * 2006-08-10 2014-07-08 Stmicroelectronics Asia Pacific Pte, Ltd. Yule walker based low-complexity voice activity detector in noise suppression systems
US8175871B2 (en) 2007-09-28 2012-05-08 Qualcomm Incorporated Apparatus and method of noise and echo reduction in multiple microphone audio systems
US8954324B2 (en) 2007-09-28 2015-02-10 Qualcomm Incorporated Multiple microphone voice activity detector
US8223988B2 (en) 2008-01-29 2012-07-17 Qualcomm Incorporated Enhanced blind source separation algorithm for highly correlated mixtures
US8244528B2 (en) 2008-04-25 2012-08-14 Nokia Corporation Method and apparatus for voice activity determination
WO2009130388A1 (en) 2008-04-25 2009-10-29 Nokia Corporation Calibrating multiple microphones
US8275136B2 (en) 2008-04-25 2012-09-25 Nokia Corporation Electronic device speech enhancement
ES2371619B1 (en) * 2009-10-08 2012-08-08 Telefónica, S.A. VOICE SEGMENT DETECTION PROCEDURE.
BR112012008671A2 (en) 2009-10-19 2016-04-19 Ericsson Telefon Ab L M method for detecting voice activity from a received input signal, and, voice activity detector
CN108985277B (en) * 2018-08-24 2020-11-10 广东石油化工学院 Method and system for filtering background noise in power signal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3509281A (en) * 1966-09-29 1970-04-28 Ibm Voicing detection system
US4052568A (en) * 1976-04-23 1977-10-04 Communications Satellite Corporation Digital voice switch
US4358738A (en) * 1976-06-07 1982-11-09 Kahn Leonard R Signal presence determination method for use in a contaminated medium
JPS5636246A (en) * 1979-08-31 1981-04-09 Nec Corp Stereo signal demodulating circuit
JPS59115625A (en) * 1982-12-22 1984-07-04 Nec Corp Voice detector
DE3370423D1 (en) * 1983-06-07 1987-04-23 Ibm Process for activity detection in a voice transmission system
JPS6196817A (en) * 1984-10-17 1986-05-15 Sharp Corp Filter

Also Published As

Publication number Publication date
FI110726B (en) 2003-03-14
IE890774L (en) 1989-09-11
BR8907308A (en) 1991-03-19
DE68929442D1 (en) 2003-01-23
JP3423906B2 (en) 2003-07-07
JP2000148172A (en) 2000-05-26
WO1989008910A1 (en) 1989-09-21
IE61863B1 (en) 1994-11-30
NO903936L (en) 1990-11-09
KR0161258B1 (en) 1999-03-20
DE68929442T2 (en) 2003-10-02
DE68910859T2 (en) 1994-12-08
AU3355489A (en) 1989-10-05
DK215690A (en) 1990-09-07
JPH03504283A (en) 1991-09-19
HK135896A (en) 1996-08-02
NO304858B1 (en) 1999-02-22
NO982568D0 (en) 1998-06-04
KR900700993A (en) 1990-08-17
EP0548054B1 (en) 2002-12-11
CA1335003C (en) 1995-03-28
EP0335521B1 (en) 1993-11-24
EP0548054A3 (en) 1994-01-12
PT89978A (en) 1989-11-10
JP3321156B2 (en) 2002-09-03
ES2188588T3 (en) 2003-07-01
EP0335521A1 (en) 1989-10-04
EP0548054A2 (en) 1993-06-23
DE68910859D1 (en) 1994-01-05
ES2047664T3 (en) 1994-03-01
DK175478B1 (en) 2004-11-08
AU608432B2 (en) 1991-03-28
FI20010933A (en) 2001-05-04
NO316610B1 (en) 2004-03-08
NO982568L (en) 1990-11-09
FI115328B (en) 2005-04-15
DK215690D0 (en) 1990-09-07
NZ228290A (en) 1992-01-29
PT89978B (en) 1995-03-01
NO903936D0 (en) 1990-09-10

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Legal Events

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Owner name: LG ELECTRONICS INC.

MA Patent expired