BE892356A - Discriminateur de bande d'energie - Google Patents

Discriminateur de bande d'energie

Info

Publication number
BE892356A
BE892356A BE0/207463A BE207463A BE892356A BE 892356 A BE892356 A BE 892356A BE 0/207463 A BE0/207463 A BE 0/207463A BE 207463 A BE207463 A BE 207463A BE 892356 A BE892356 A BE 892356A
Authority
BE
Belgium
Prior art keywords
discriminator
energy strip
strip
energy
strip discriminator
Prior art date
Application number
BE0/207463A
Other languages
English (en)
Inventor
C Gritton
T Zebo
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 BE892356A publication Critical patent/BE892356A/fr

Links

Classifications

    • 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
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
BE0/207463A 1981-03-05 1982-03-04 Discriminateur de bande d'energie BE892356A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/240,978 US4426729A (en) 1981-03-05 1981-03-05 Partial band - whole band energy discriminator

Publications (1)

Publication Number Publication Date
BE892356A true BE892356A (fr) 1982-07-01

Family

ID=22908705

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/207463A BE892356A (fr) 1981-03-05 1982-03-04 Discriminateur de bande d'energie

Country Status (4)

Country Link
US (1) US4426729A (fr)
JP (1) JPS58500229A (fr)
BE (1) BE892356A (fr)
CA (1) CA1191570A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584441A (en) * 1984-09-07 1986-04-22 At&T Bell Laboratories Bidirectional adaptive voice frequency repeater
US4712235A (en) * 1984-11-19 1987-12-08 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller
CA1242541A (fr) * 1985-11-25 1988-09-27 Dany Sylvain Elimination des echos dans les repeteurs pour voies de transmission bifilaires
US4894820A (en) * 1987-03-24 1990-01-16 Oki Electric Industry Co., Ltd. Double-talk detection in an echo canceller
US5408581A (en) * 1991-03-14 1995-04-18 Technology Research Association Of Medical And Welfare Apparatus Apparatus and method for speech signal processing
WO1994000944A1 (fr) * 1992-06-30 1994-01-06 Polycom, Inc. Procede et dispositif de detection d'un signal de sonnerie
US5390244A (en) * 1993-09-10 1995-02-14 Polycom, Inc. Method and apparatus for periodic signal detection
US5592548A (en) * 1995-05-31 1997-01-07 Qualcomm Incorporated System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
US5689556A (en) * 1995-09-15 1997-11-18 Hughes Electronics Method of detecting narrow-band signals in an echo canceller
JP3860556B2 (ja) * 2003-04-04 2006-12-20 松下電器産業株式会社 基地局装置及び通信方法
US7508948B2 (en) * 2004-10-05 2009-03-24 Audience, Inc. Reverberation removal
US9307321B1 (en) 2011-06-09 2016-04-05 Audience, Inc. Speaker distortion reduction

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974281A (en) 1957-11-01 1961-03-07 Bell Telephone Labor Inc Selective signal recognition system
US3499999A (en) 1966-10-31 1970-03-10 Bell Telephone Labor Inc Closed loop adaptive echo canceller using generalized filter networks
US3500000A (en) 1966-10-31 1970-03-10 Myldred P Kelly Self-adaptive echo canceller
US4028506A (en) 1973-12-12 1977-06-07 Nippon Electric Company, Ltd. Maximum value tracing circuit for digitized voice signals
US3927259A (en) 1974-02-13 1975-12-16 Atlantic Res Corp Signal identification system
US4028496A (en) 1976-08-17 1977-06-07 Bell Telephone Laboratories, Incorporated Digital speech detector
US4129753A (en) 1977-12-09 1978-12-12 Bell Telephone Laboratories, Incorporated Echo canceller using feedback to improve speech detector performance
US4275270A (en) 1979-11-29 1981-06-23 The Regents Of The University Of California Speech detector for use in an adaptive hybrid circuit
US4277645A (en) 1980-01-25 1981-07-07 Bell Telephone Laboratories, Incorporated Multiple variable threshold speech detector

Also Published As

Publication number Publication date
CA1191570A (fr) 1985-08-06
JPS58500229A (ja) 1983-02-10
US4426729A (en) 1984-01-17

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WESTERN ELECTRIC CY INC.

Effective date: 19890331