GB1434483A - Voice switch with an adaptive threshold - Google Patents

Voice switch with an adaptive threshold

Info

Publication number
GB1434483A
GB1434483A GB422474A GB422474A GB1434483A GB 1434483 A GB1434483 A GB 1434483A GB 422474 A GB422474 A GB 422474A GB 422474 A GB422474 A GB 422474A GB 1434483 A GB1434483 A GB 1434483A
Authority
GB
United Kingdom
Prior art keywords
threshold
latch
stored
threshold value
gates
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
Application number
GB422474A
Other languages
English (en)
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.)
Comsat Corp
Original Assignee
Comsat Corp
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 Comsat Corp filed Critical Comsat Corp
Publication of GB1434483A publication Critical patent/GB1434483A/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Radio Relay Systems (AREA)
GB422474A 1973-02-13 1974-01-30 Voice switch with an adaptive threshold Expired GB1434483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00331735A US3832491A (en) 1973-02-13 1973-02-13 Digital voice switch with an adaptive digitally-controlled threshold

Publications (1)

Publication Number Publication Date
GB1434483A true GB1434483A (en) 1976-05-05

Family

ID=23295160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB422474A Expired GB1434483A (en) 1973-02-13 1974-01-30 Voice switch with an adaptive threshold

Country Status (11)

Country Link
US (1) US3832491A (cg-RX-API-DMAC7.html)
JP (1) JPS49114822A (cg-RX-API-DMAC7.html)
AU (1) AU6529974A (cg-RX-API-DMAC7.html)
BE (1) BE810976A (cg-RX-API-DMAC7.html)
CA (1) CA1009777A (cg-RX-API-DMAC7.html)
DE (1) DE2405349A1 (cg-RX-API-DMAC7.html)
FR (1) FR2217873B1 (cg-RX-API-DMAC7.html)
GB (1) GB1434483A (cg-RX-API-DMAC7.html)
IT (1) IT1004926B (cg-RX-API-DMAC7.html)
NL (1) NL7401819A (cg-RX-API-DMAC7.html)
SE (1) SE410931B (cg-RX-API-DMAC7.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4352957A (en) 1980-03-17 1982-10-05 Storage Technology Corporation Speech detector circuit with associated gain control for a tasi system
US4365112A (en) 1980-03-17 1982-12-21 Storage Technology Corporation Speech detector circuit for a TASI system

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255762B1 (cg-RX-API-DMAC7.html) * 1973-12-21 1976-07-23 Ibm France
US3882458A (en) * 1974-03-27 1975-05-06 Gen Electric Voice operated switch including apparatus for establishing a variable threshold noise level
NO134477C (cg-RX-API-DMAC7.html) * 1974-10-29 1976-10-13 Manus Max
US3953676A (en) * 1974-12-12 1976-04-27 Northern Electric Company, Limited Digital control of a loudspeaking telephone system
US4008375A (en) * 1975-08-21 1977-02-15 Communications Satellite Corporation (Comsat) Digital voice switch for single or multiple channel applications
US4052568A (en) * 1976-04-23 1977-10-04 Communications Satellite Corporation Digital voice switch
SE399502B (sv) * 1976-06-08 1978-02-13 Karlsson Lars Percy For telefonanleggningar med hogtalarforsedda telefonapparater avsedd styranordning
US4131765A (en) * 1976-08-09 1978-12-26 Kahn Leonard R Method and means for improving the spectrum utilization of communications channels
US4130739A (en) * 1977-06-09 1978-12-19 International Business Machines Corporation Circuitry for compression of silence in dictation speech recording
CA1130920A (en) * 1979-03-05 1982-08-31 William G. Crouse Speech detector with variable threshold
US4351983A (en) * 1979-03-05 1982-09-28 International Business Machines Corp. Speech detector with variable threshold
FR2466825A1 (fr) * 1979-09-28 1981-04-10 Thomson Csf Dispositif de detection de signaux vocaux et systeme d'alternat comportant un tel dispositif
US4357491A (en) * 1980-09-16 1982-11-02 Northern Telecom Limited Method of and apparatus for detecting speech in a voice channel signal
DE3236000A1 (de) * 1982-09-29 1984-03-29 Blaupunkt-Werke Gmbh, 3200 Hildesheim Verfahren zum klassifizieren von audiosignalen
JPS5979300A (ja) * 1982-10-28 1984-05-08 電子計算機基本技術研究組合 認識装置
JPS60181798A (ja) * 1984-02-28 1985-09-17 電子計算機基本技術研究組合 音声認識装置
JP2551050B2 (ja) * 1987-11-13 1996-11-06 ソニー株式会社 有音無音判定回路
IL84902A (en) * 1987-12-21 1991-12-15 D S P Group Israel Ltd Digital autocorrelation system for detecting speech in noisy audio signal
JPH07113840B2 (ja) * 1989-06-29 1995-12-06 三菱電機株式会社 音声検出器
CA2040025A1 (en) * 1990-04-09 1991-10-10 Hideki Satoh Speech detection apparatus with influence of input level and noise reduced
JP2518765B2 (ja) * 1991-05-31 1996-07-31 国際電気株式会社 音声符号化通信方式及びその装置
US6381568B1 (en) 1999-05-05 2002-04-30 The United States Of America As Represented By The National Security Agency Method of transmitting speech using discontinuous transmission and comfort noise
KR20100106738A (ko) * 2009-03-24 2010-10-04 주식회사 팬택 마이크를 이용한 바람 인식 방법 및 시스템
CN102376303B (zh) * 2010-08-13 2014-03-12 国基电子（上海）有限公司 录音设备及利用该录音设备进行声音处理与录入的方法
EP2552172A1 (en) * 2011-07-29 2013-01-30 ST-Ericsson SA Control of the transmission of a voice signal over a bluetooth® radio link
WO2014202672A2 (en) 2013-06-21 2014-12-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Time scaler, audio decoder, method and a computer program using a quality control
CN105518778B (zh) 2013-06-21 2019-09-13 弗劳恩霍夫应用研究促进协会 抖动缓冲器控制器、音频解码器、方法及计算机可读存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958733A (en) * 1958-12-23 1960-11-01 Bell Telephone Labor Inc Transmission control in a two way communication system
US3424869A (en) * 1965-06-15 1969-01-28 Bell Telephone Labor Inc Digital speech interpolation communication system
US3520999A (en) * 1967-03-27 1970-07-21 Bell Telephone Labor Inc Digital speech detection system
US3555192A (en) * 1969-07-08 1971-01-12 Nasa Audio signal processor
US3712959A (en) * 1969-07-14 1973-01-23 Communications Satellite Corp Method and apparatus for detecting speech signals in the presence of noise

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4352957A (en) 1980-03-17 1982-10-05 Storage Technology Corporation Speech detector circuit with associated gain control for a tasi system
US4365112A (en) 1980-03-17 1982-12-21 Storage Technology Corporation Speech detector circuit for a TASI system

Also Published As

Publication number Publication date
FR2217873B1 (cg-RX-API-DMAC7.html) 1977-09-30
CA1009777A (en) 1977-05-03
SE410931B (sv) 1979-11-12
AU6529974A (en) 1975-08-07
JPS49114822A (cg-RX-API-DMAC7.html) 1974-11-01
BE810976A (fr) 1974-05-29
US3832491A (en) 1974-08-27
FR2217873A1 (cg-RX-API-DMAC7.html) 1974-09-06
DE2405349A1 (de) 1974-08-22
IT1004926B (it) 1976-07-20
NL7401819A (cg-RX-API-DMAC7.html) 1974-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee