ES2047664T3 - Voice activity detection. - Google Patents

Voice activity detection.

Info

Publication number
ES2047664T3
ES2047664T3 ES89302422T ES89302422T ES2047664T3 ES 2047664 T3 ES2047664 T3 ES 2047664T3 ES 89302422 T ES89302422 T ES 89302422T ES 89302422 T ES89302422 T ES 89302422T ES 2047664 T3 ES2047664 T3 ES 2047664T3
Authority
ES
Spain
Prior art keywords
vad
measure
voice activity
provide
lpc
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
ES89302422T
Other languages
Spanish (es)
Inventor
Daniel Kenneth Freeman
Ivan Boyd
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
Priority to GB888805795A priority Critical patent/GB8805795D0/en
Priority to GB888813346A priority patent/GB8813346D0/en
Priority to GB888820105A priority patent/GB8820105D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2047664T3 publication Critical patent/ES2047664T3/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00
    • G10L25/78Detection of presence or absence of voice signals

Abstract

EL DETECTOR DE LA ACTIVIDAD DE VOZ (VAD) SE USA EN UN CODIFICADOR LPC EN UN SISTEMA DE RADIO MOVIL, USANDO UNOS COEFICIENTES DE AUTOCORRELACION RO,R1,... DE LA SEÑAL DE ENTRADA, PEASDOS Y COMBINADOS, PARA PROPORCIONAR UNA MEDIDA M QUE DEPENDE DE LA POTENCIA DENTRO DE ESTA PARTE DEL ESPECTRO QUE NO CONTIENE RUIDO, EL CUAL ES FIJADO CONTRA UNA VARIABLE UMBRAL PARA DISPONER DE UNA SALIDA LOGICA HABLA/NO HABLA. DETECTOR voice activity (VAD) is used in an encoder LPC IN A MOBILE RADIO SYSTEM USING autocorrelation coefficients RO, R1, ... INPUT SIGNAL, AND COMBINED PEASDOS, to provide a measure M THAT DEPENDS ON THE POWER WITHIN THIS PART OF sPECTRUM THAT DOES NOT CONTAIN NOISE, WHICH IS SET AGAINST A VARIABLE THRESHOLD to provide a logic output speech / NOT SPEAK. LA MEDIDA ES: M=ROHO+2(SIGMA)RIHI, DONDE HI SON LOS COEFICIENTES DE AUTOCORRELACION DE LA RESPUESTA DEL IMPULSO DE ORDEN N-ESIMO DEL FILTRO DE RUIDO INVERSO FIR DERIVADO DEL ANALISIS LPC DE LAS ESTRUCTURAS PREVIAS DE SEÑAL DE NO-HABLA. The measure is: M = ROHO + 2 (SIGMA) RIHI WHERE ARE HI autocorrelation coefficients IMPULSE RESPONSE OF ORDER Nth NOISE FILTER FIR INVERSO DERIVATIVE ANALYSIS OF STRUCTURES PRE LPC SIGNAL NO- SPEAKS. LA ADAPTACION HUMBRAL Y EL COEFICIENTE DE TRANSMISION SE CONTROLAN MEDIANTE UNA SEGUNDA RESPUESTA VAD PARA RELACIONAR EL CAMBIO ESPECTRAL ENTRE ESTRUCTURAS. ADAPTATION HUMBRAL and the transmission coefficient are controlled by a second response VAD RELATE TO CHANGE BETWEEN THE SPECTRAL STRUCTURES.
ES89302422T 1988-03-11 1989-03-10 Voice activity detection. Expired - Lifetime ES2047664T3 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB888805795A GB8805795D0 (en) 1988-03-11 1988-03-11 Voice activity detector
GB888813346A GB8813346D0 (en) 1988-06-06 1988-06-06 Voice activity detection
GB888820105A GB8820105D0 (en) 1988-08-24 1988-08-24 Voice activity detection

Publications (1)

Publication Number Publication Date
ES2047664T3 true ES2047664T3 (en) 1994-03-01

Family

ID=27263821

Family Applications (2)

Application Number Title Priority Date Filing Date
ES89302422T Expired - Lifetime ES2047664T3 (en) 1988-03-11 1989-03-10 Voice activity detection.
ES93200015T Expired - Lifetime ES2188588T3 (en) 1988-03-11 1989-03-10 Voice activity detector.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES93200015T Expired - Lifetime ES2188588T3 (en) 1988-03-11 1989-03-10 Voice activity detector.

Country Status (16)

Country Link
EP (2) EP0335521B1 (en)
JP (2) JP3321156B2 (en)
KR (1) KR0161258B1 (en)
AU (1) AU608432B2 (en)
BR (1) BR8907308A (en)
CA (1) CA1335003C (en)
DE (4) DE68929442T2 (en)
DK (1) DK175478B1 (en)
ES (2) ES2047664T3 (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)

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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 A speech detection.
SE470577B (en) * 1993-01-29 1994-09-19 Ericsson Telefon Ab L M Method and apparatus for encoding and / or decoding background sounds
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 Voice activity detector
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 Voice activity detection
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 creation of 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
WO1998001847A1 (en) * 1996-07-03 1998-01-15 British Telecommunications Public Limited Company 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 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
US7155388B2 (en) * 2004-06-30 2006-12-26 Motorola, Inc. Method and apparatus for characterizing inhalation noise and calculating parameters based on the characterization
US7139701B2 (en) * 2004-06-30 2006-11-21 Motorola, Inc. Method for detecting and attenuating inhalation noise in a communication system
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
US8954324B2 (en) 2007-09-28 2015-02-10 Qualcomm Incorporated Multiple microphone voice activity detector
US8175871B2 (en) 2007-09-28 2012-05-08 Qualcomm Incorporated Apparatus and method of noise and echo reduction in multiple microphone audio systems
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
US8275136B2 (en) 2008-04-25 2012-09-25 Nokia Corporation Electronic device speech enhancement
US8611556B2 (en) 2008-04-25 2013-12-17 Nokia Corporation Calibrating multiple microphones
ES2371619B1 (en) * 2009-10-08 2012-08-08 Telefónica, S.A. Voice segment detection procedure.
CN102576528A (en) * 2009-10-19 2012-07-11 瑞典爱立信有限公司 Detector and method for voice activity detection

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
JPS6244732B2 (en) * 1979-08-31 1987-09-22 Nippon Denki Kk
JPS6245730B2 (en) * 1982-12-22 1987-09-29 Nippon Electric Co
EP0127718B1 (en) * 1983-06-07 1987-03-18 International Business Machines Corporation Process for activity detection in a voice transmission system
JPH036689B2 (en) * 1984-10-17 1991-01-30 Sharp Kk

Also Published As

Publication number Publication date
IE61863B1 (en) 1994-11-30
EP0335521A1 (en) 1989-10-04
BR8907308A (en) 1991-03-19
NO982568D0 (en) 1998-06-04
ES2188588T3 (en) 2003-07-01
FI115328B1 (en)
NZ228290A (en) 1992-01-29
FI110726B1 (en)
HK135896A (en) 1996-08-02
EP0548054B1 (en) 2002-12-11
CA1335003C (en) 1995-03-28
DE68910859D1 (en) 1994-01-05
NO903936L (en) 1990-11-09
FI20010933A (en) 2001-05-04
KR900700993A (en) 1990-08-17
NO304858B1 (en) 1999-02-22
AU3355489A (en) 1989-10-05
FI904410D0 (en)
FI110726B (en) 2003-03-14
WO1989008910A1 (en) 1989-09-21
DK215690D0 (en) 1990-09-07
AU608432B2 (en) 1991-03-28
JPH03504283A (en) 1991-09-19
PT89978B (en) 1995-03-01
FI904410A0 (en) 1990-09-07
NO903936D0 (en) 1990-09-10
JP3321156B2 (en) 2002-09-03
JP3423906B2 (en) 2003-07-07
DK175478B1 (en) 2004-11-08
EP0335521B1 (en) 1993-11-24
EP0548054A2 (en) 1993-06-23
DE68929442D1 (en) 2003-01-23
FI115328B (en) 2005-04-15
DE68910859T2 (en) 1994-12-08
PT89978A (en) 1989-11-10
DE68929442T2 (en) 2003-10-02
JP2000148172A (en) 2000-05-26
DK215690A (en) 1990-09-07
NO982568L (en) 1990-11-09
KR0161258B1 (en) 1999-03-20
IE890774L (en) 1989-09-11
EP0548054A3 (en) 1994-01-12

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