[go: up one dir, main page]

NL8100323A - Spraakdetector met meerdere, variabele reaktiedrempels. - Google Patents

Spraakdetector met meerdere, variabele reaktiedrempels. Download PDF

Info

Publication number
NL8100323A
NL8100323A NL8100323A NL8100323A NL8100323A NL 8100323 A NL8100323 A NL 8100323A NL 8100323 A NL8100323 A NL 8100323A NL 8100323 A NL8100323 A NL 8100323A NL 8100323 A NL8100323 A NL 8100323A
Authority
NL
Netherlands
Prior art keywords
signal
level
speech
output
output signal
Prior art date
Application number
NL8100323A
Other languages
English (en)
Dutch (nl)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of NL8100323A publication Critical patent/NL8100323A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
    • H04J3/175—Speech activity or inactivity detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Telephone Function (AREA)
NL8100323A 1980-01-25 1981-01-23 Spraakdetector met meerdere, variabele reaktiedrempels. NL8100323A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/115,185 US4277645A (en) 1980-01-25 1980-01-25 Multiple variable threshold speech detector
US11518580 1980-01-25

Publications (1)

Publication Number Publication Date
NL8100323A true NL8100323A (nl) 1981-08-17

Family

ID=22359780

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8100323A NL8100323A (nl) 1980-01-25 1981-01-23 Spraakdetector met meerdere, variabele reaktiedrempels.

Country Status (8)

Country Link
US (1) US4277645A (de)
JP (1) JPS56142600A (de)
CA (1) CA1158174A (de)
DE (1) DE3101775A1 (de)
FR (2) FR2482389B1 (de)
GB (2) GB2068698B (de)
IT (1) IT1135165B (de)
NL (1) NL8100323A (de)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357491A (en) * 1980-09-16 1982-11-02 Northern Telecom Limited Method of and apparatus for detecting speech in a voice channel signal
US4376874A (en) * 1980-12-15 1983-03-15 Sperry Corporation Real time speech compaction/relay with silence detection
USRE32172E (en) * 1980-12-19 1986-06-03 At&T Bell Laboratories Endpoint detector
US4370521A (en) * 1980-12-19 1983-01-25 Bell Telephone Laboratories, Incorporated Endpoint detector
NL8220092A (nl) * 1981-03-05 1983-02-01 Western Electric Co Energiebanddiscriminator.
US4410763A (en) * 1981-06-09 1983-10-18 Northern Telecom Limited Speech detector
JPS59139099A (ja) * 1983-01-31 1984-08-09 株式会社東芝 音声区間検出装置
US4535445A (en) * 1983-06-16 1985-08-13 At&T Information Systems Conferencing system adaptive signal conditioner
US4920534A (en) 1986-02-28 1990-04-24 At&T Bell Laboratories System for controllably eliminating bits from packet information field based on indicator in header and amount of data in packet buffer
US4829578A (en) * 1986-10-02 1989-05-09 Dragon Systems, Inc. Speech detection and recognition apparatus for use with background noise of varying levels
US5008941A (en) * 1989-03-31 1991-04-16 Kurzweil Applied Intelligence, Inc. Method and apparatus for automatically updating estimates of undesirable components of the speech signal in a speech recognition system
US4979214A (en) * 1989-05-15 1990-12-18 Dialogic Corporation Method and apparatus for identifying speech in telephone signals
DK406189A (da) * 1989-08-18 1991-02-19 Otwidan Aps Forenede Danske Ho Fremgangsmaade og apparat til klassifikation af et blandet tale- og stoejsignal
GB2256351B (en) * 1991-05-25 1995-07-05 Motorola Inc Enhancement of echo return loss
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
JP3483695B2 (ja) * 1996-03-14 2004-01-06 株式会社リコー 音声通信装置
US5884255A (en) * 1996-07-16 1999-03-16 Coherent Communications Systems Corp. Speech detection system employing multiple determinants
FR2768544B1 (fr) * 1997-09-18 1999-11-19 Matra Communication Procede de detection d'activite vocale
USD419160S (en) * 1998-05-14 2000-01-18 Northrop Grumman Corporation Personal communications unit docking station
US6243573B1 (en) 1998-05-15 2001-06-05 Northrop Grumman Corporation Personal communications system
US6169730B1 (en) 1998-05-15 2001-01-02 Northrop Grumman Corporation Wireless communications protocol
USD421002S (en) * 1998-05-15 2000-02-22 Northrop Grumman Corporation Personal communications unit handset
US6223062B1 (en) 1998-05-15 2001-04-24 Northrop Grumann Corporation Communications interface adapter
US6141426A (en) * 1998-05-15 2000-10-31 Northrop Grumman Corporation Voice operated switch for use in high noise environments
US6041243A (en) * 1998-05-15 2000-03-21 Northrop Grumman Corporation Personal communications unit
US6304559B1 (en) 1998-05-15 2001-10-16 Northrop Grumman Corporation Wireless communications protocol
DE19844702C2 (de) * 1998-09-29 2002-11-21 Siemens Ag Verfahren, Empfangseinrichtung und Funkstation zur Erkennung eines Nutzdatenblocks mit fehlerhaften Nutzdatensymbolen
US6314396B1 (en) * 1998-11-06 2001-11-06 International Business Machines Corporation Automatic gain control in a speech recognition system
US6381570B2 (en) * 1999-02-12 2002-04-30 Telogy Networks, Inc. Adaptive two-threshold method for discriminating noise from speech in a communication signal
US6490556B2 (en) * 1999-05-28 2002-12-03 Intel Corporation Audio classifier for half duplex communication
US7263074B2 (en) * 1999-12-09 2007-08-28 Broadcom Corporation Voice activity detection based on far-end and near-end statistics
WO2001056015A1 (en) * 2000-01-27 2001-08-02 Koninklijke Philips Electronics N.V. Speech detection device having two switch-off criterions
DE10007752A1 (de) * 2000-02-19 2001-08-23 Braun Gmbh Verfahren zur Anpassung eines Entscheidungspegels bei der Umwandlung eines analogen Signals in ein digitales Signal und digitaler Empfänger
US20020103636A1 (en) * 2001-01-26 2002-08-01 Tucker Luke A. Frequency-domain post-filtering voice-activity detector
US7146314B2 (en) * 2001-12-20 2006-12-05 Renesas Technology Corporation Dynamic adjustment of noise separation in data handling, particularly voice activation
JP3812887B2 (ja) * 2001-12-21 2006-08-23 富士通株式会社 信号処理システムおよび方法
US7925510B2 (en) * 2004-04-28 2011-04-12 Nuance Communications, Inc. Componentized voice server with selectable internal and external speech detectors
CN1299254C (zh) * 2004-05-31 2007-02-07 中兴通讯股份有限公司 一种回声抑制器中近端话音检测的实现方法
US20060241937A1 (en) * 2005-04-21 2006-10-26 Ma Changxue C Method and apparatus for automatically discriminating information bearing audio segments and background noise audio segments
CN101859568B (zh) * 2009-04-10 2012-05-30 比亚迪股份有限公司 一种语音背景噪声的消除方法和装置
US8995823B2 (en) 2012-07-17 2015-03-31 HighlightCam, Inc. Method and system for content relevance score determination
KR20140147587A (ko) * 2013-06-20 2014-12-30 한국전자통신연구원 Ｗｆｓｔ를 이용한 음성 끝점 검출 장치 및 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008375A (en) * 1975-08-21 1977-02-15 Communications Satellite Corporation (Comsat) Digital voice switch for single or multiple channel applications
US4029912A (en) * 1975-12-10 1977-06-14 Bell Telephone Laboratories, Incorporated Common control digital echo suppressor
US4028496A (en) * 1976-08-17 1977-06-07 Bell Telephone Laboratories, Incorporated Digital speech detector
US4167653A (en) * 1977-04-15 1979-09-11 Nippon Electric Company, Ltd. Adaptive speech signal detector

Also Published As

Publication number Publication date
FR2482389A1 (fr) 1981-11-13
US4277645A (en) 1981-07-07
IT1135165B (it) 1986-08-20
DE3101775A1 (de) 1982-01-07
IT8119308A0 (it) 1981-01-23
FR2478909A1 (de) 1981-09-25
JPS56142600A (en) 1981-11-06
GB2068698A (en) 1981-08-12
FR2482389B1 (fr) 1985-12-27
GB8332290D0 (en) 1984-01-11
GB2068698B (en) 1984-10-24
GB2136253B (en) 1985-05-09
FR2478909B1 (de) 1985-12-27
JPH0247142B2 (de) 1990-10-18
GB2136253A (en) 1984-09-12
CA1158174A (en) 1983-12-06

Similar Documents

Publication Publication Date Title
NL8100323A (nl) Spraakdetector met meerdere, variabele reaktiedrempels.
US4712235A (en) Method and apparatus for improved control and time sharing of an echo canceller
EP0736235B1 (de) Verfahren zur bestimmung der echolage in einem echokompensator
Gansler et al. A double-talk detector based on coherence
US4007341A (en) Echo cancelling device
CA1226636A (en) Circuit arrangement for frame and phase synchronization of a local sampling clock
DE1537739A1 (de) Sich selbst einstellende Echo-Loescheinrichtung
NL8101741A (nl) Werkwijze en inrichting voor het onderdrukken van echo's bij datatransmissie over twee-draads telefoonkanalen.
US4012603A (en) Echo suppressor having self-adaptive means
US4382164A (en) Signal stretcher for envelope generator
US3860768A (en) Echo compensation circuit to erase echoes in telephone circuits
US4878229A (en) Fast frame and phase synchronization apparatus
EP0874513A2 (de) Vorrichtung zur Rückhördämpfung
JPS61135239A (ja) エコ−キヤンセラ
WO1989012359A1 (en) Signal processor
EP0770311B1 (de) Übertragungssystem mit verbesserter tonerkennung
RU2111618C1 (ru) Способ формирования меры качества для сигнальных пакетов
EP1506650A1 (de) Zeitverzögerungsschätzung für die entzerrung
US4349707A (en) System for measuring the attenuation on a transmission path
NL8220092A (nl) Energiebanddiscriminator.
EP0770310B1 (de) Übertragungssystem mit verbesserter tonerkennung
US4360713A (en) Echo detector particularly for speech interpolation communication systems
NO175400B (no) Ekkokompensator
US7369516B1 (en) Adaptive echo canceling
JPS6053490B2 (ja) 適応型反響打消装置

Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BV The patent application has lapsed