BR8907308A - Aparelho detector da atividade vocal,processo para a deteccao da atividade vocal,aparelho para a codificacao de sinais da fala e aparelho telefonico movel - Google Patents

Aparelho detector da atividade vocal,processo para a deteccao da atividade vocal,aparelho para a codificacao de sinais da fala e aparelho telefonico movel

Info

Publication number
BR8907308A
BR8907308A BR898907308A BR8907308A BR8907308A BR 8907308 A BR8907308 A BR 8907308A BR 898907308 A BR898907308 A BR 898907308A BR 8907308 A BR8907308 A BR 8907308A BR 8907308 A BR8907308 A BR 8907308A
Authority
BR
Brazil
Prior art keywords
vocal activity
coding
detection
mobile telephone
speech signals
Prior art date
Application number
BR898907308A
Other languages
English (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 BR8907308A publication Critical patent/BR8907308A/pt

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
BR898907308A 1988-03-11 1989-03-10 Aparelho detector da atividade vocal,processo para a deteccao da atividade vocal,aparelho para a codificacao de sinais da fala e aparelho telefonico movel BR8907308A (pt)

Applications Claiming Priority (4)

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
PCT/GB1989/000247 WO1989008910A1 (en) 1988-03-11 1989-03-10 Voice activity detection

Publications (1)

Publication Number Publication Date
BR8907308A true BR8907308A (pt) 1991-03-19

Family

ID=27263821

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898907308A BR8907308A (pt) 1988-03-11 1989-03-10 Aparelho detector da atividade vocal,processo para a deteccao da atividade vocal,aparelho para a codificacao de sinais da fala e aparelho telefonico movel

Country Status (16)

Country Link
EP (2) EP0335521B1 (pt)
JP (2) JP3321156B2 (pt)
KR (1) KR0161258B1 (pt)
AU (1) AU608432B2 (pt)
BR (1) BR8907308A (pt)
CA (1) CA1335003C (pt)
DE (2) DE68910859T2 (pt)
DK (1) DK175478B1 (pt)
ES (2) ES2188588T3 (pt)
FI (2) FI110726B (pt)
HK (1) HK135896A (pt)
IE (1) IE61863B1 (pt)
NO (2) NO304858B1 (pt)
NZ (1) NZ228290A (pt)
PT (1) PT89978B (pt)
WO (1) WO1989008910A1 (pt)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0435458B1 (en) * 1989-11-28 1995-02-01 Nec Corporation Speech/voiceband data discriminator
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 (fr) * 1992-10-21 1994-11-25 Sextant Avionique Procédé de détection de la parole.
SE470577B (sv) * 1993-01-29 1994-09-19 Ericsson Telefon Ab L M Förfarande och anordning för kodning och/eller avkodning av bakgrundsljud
JPH06332492A (ja) * 1993-05-19 1994-12-02 Matsushita Electric Ind Co Ltd 音声検出方法および検出装置
SE501305C2 (sv) * 1993-05-26 1995-01-09 Ericsson Telefon Ab L M Förfarande och anordning för diskriminering mellan stationära och icke stationära signaler
EP0633658A3 (en) * 1993-07-06 1996-01-17 Hughes Aircraft Co Automatic gain control circuit coupled to the transmission and activated by speech.
IN184794B (pt) * 1993-09-14 2000-09-30 British Telecomm
SE501981C2 (sv) * 1993-11-02 1995-07-03 Ericsson Telefon Ab L M Förfarande och anordning för diskriminering mellan stationära och icke stationära signaler
US5742734A (en) * 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
FR2727236B1 (fr) * 1994-11-22 1996-12-27 Alcatel Mobile Comm France Detection d'activite vocale
GB2317084B (en) * 1995-04-28 2000-01-19 Northern Telecom Ltd 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 (fr) * 1995-10-13 1997-12-12 Massaloux Dominique Procede et dispositif de creation d'un bruit de confort dans un systeme de transmission numerique de parole
US5794199A (en) * 1996-01-29 1998-08-11 Texas Instruments Incorporated Method and system for improved discontinuous speech transmission
CN1225736A (zh) * 1996-07-03 1999-08-11 英国电讯有限公司 语音活动检测器
US6618701B2 (en) * 1999-04-19 2003-09-09 Motorola, Inc. Method and system for noise suppression using external voice activity detection
DE10052626A1 (de) * 2000-10-24 2002-05-02 Alcatel Sa Adaptiver Geräuschpegelschätzer
CN1617606A (zh) * 2003-11-12 2005-05-18 皇家飞利浦电子股份有限公司 一种在语音信道传输非语音数据的方法及装置
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 (fi) * 2004-08-30 2006-03-01 Nokia Corp Ääniaktiivisuuden havaitseminen äänisignaalissa
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
WO2009130388A1 (en) 2008-04-25 2009-10-29 Nokia Corporation Calibrating multiple microphones
ES2371619B1 (es) * 2009-10-08 2012-08-08 Telefónica, S.A. Procedimiento de detección de segmentos de voz.
WO2011049516A1 (en) * 2009-10-19 2011-04-28 Telefonaktiebolaget Lm Ericsson (Publ) Detector and method for voice activity detection
CN108985277B (zh) * 2018-08-24 2020-11-10 广东石油化工学院 一种功率信号中背景噪声滤除方法及系统

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 (ja) * 1982-12-22 1984-07-04 Nec Corp 音声検出器
EP0127718B1 (fr) * 1983-06-07 1987-03-18 International Business Machines Corporation Procédé de détection d'activité dans un système de transmission de la voix
JPS6196817A (ja) * 1984-10-17 1986-05-15 Sharp Corp フイルタ−

Also Published As

Publication number Publication date
FI115328B (fi) 2005-04-15
NO903936L (no) 1990-11-09
FI110726B (fi) 2003-03-14
EP0335521A1 (en) 1989-10-04
NO304858B1 (no) 1999-02-22
DE68910859T2 (de) 1994-12-08
DK215690D0 (da) 1990-09-07
NZ228290A (en) 1992-01-29
KR900700993A (ko) 1990-08-17
EP0548054B1 (en) 2002-12-11
KR0161258B1 (ko) 1999-03-20
ES2047664T3 (es) 1994-03-01
DE68929442T2 (de) 2003-10-02
WO1989008910A1 (en) 1989-09-21
NO316610B1 (no) 2004-03-08
DK215690A (da) 1990-09-07
NO982568L (no) 1990-11-09
HK135896A (en) 1996-08-02
NO903936D0 (no) 1990-09-10
DK175478B1 (da) 2004-11-08
EP0548054A3 (pt) 1994-01-12
PT89978A (pt) 1989-11-10
DE68929442D1 (de) 2003-01-23
PT89978B (pt) 1995-03-01
JPH03504283A (ja) 1991-09-19
FI904410A0 (fi) 1990-09-07
CA1335003C (en) 1995-03-28
JP2000148172A (ja) 2000-05-26
IE61863B1 (en) 1994-11-30
FI20010933A (fi) 2001-05-04
JP3321156B2 (ja) 2002-09-03
DE68910859D1 (de) 1994-01-05
EP0335521B1 (en) 1993-11-24
EP0548054A2 (en) 1993-06-23
NO982568D0 (no) 1998-06-04
JP3423906B2 (ja) 2003-07-07
ES2188588T3 (es) 2003-07-01
AU608432B2 (en) 1991-03-28
AU3355489A (en) 1989-10-05
IE890774L (en) 1989-09-11

Similar Documents

Publication Publication Date Title
BR8907308A (pt) Aparelho detector da atividade vocal,processo para a deteccao da atividade vocal,aparelho para a codificacao de sinais da fala e aparelho telefonico movel
WO2000031720A3 (en) Complex signal activity detection for improved speech/noise classification of an audio signal
SE8201598L (sv) Anordning for att reducera bruset i en talsignal som er blandad med brus
GB2208022B (en) Voice interval detection system
US6285979B1 (en) Phoneme analyzer
JPS6245730B2 (pt)
US4864307A (en) Method and device for the automatic recognition of targets from "Doppler" ec
DE60033636D1 (de) Pausendetektion für die Spracherkennung
ATE282235T1 (de) Robuste merkmale für die erkennung von verrauschten sprachsignalen
KR910020644A (ko) 음성잡음분리장치
US3377428A (en) Voiced sound detector circuits and systems
DE60317833D1 (de) Interferenzermittlung in einem Mobilkommunikationssystem
GB2188763A (en) Noise compensation in speech recognition
CA2076606A1 (en) Method for detecting voice presence on a communication line
US5347611A (en) Apparatus and method for transparent tone passing over narrowband digital channels
JPH06236195A (ja) 音声区間検出方法
JP3355473B2 (ja) 音声検出方法
JPS5491008A (en) Audio recognition unit
JPS63278100A (ja) 音声認識装置
ATE95655T1 (de) Konferenz-freisprecheinrichtung.
FR2437744A1 (fr) Dispositif de traitement des signaux vocaux de modulation et emetteur comportant un tel dispositif
KR940003333A (ko) 캠코더의 환경잡음 제거장치
JPS63127296A (ja) 音声区間検出方式
KR910002162A (ko) 무선전화기의 데이타 교신음 뮤트회로
JPS6095600A (ja) 音声サンプリング方式

Legal Events

Date Code Title Description
KD Notifcation of receipt (letter patent)
FG Letter patent granted
B25A Requested transfer of rights approved

Free format text: TRANSFERIDO DE: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 10/03/2004

B15K Others concerning applications: alteration of classification

Ipc: G10L 25/00 (2013.01), G10L 25/78 (2013.0