AU6841396A - Echo cancelling using signal preprocessing in an acoustic environment - Google Patents

Echo cancelling using signal preprocessing in an acoustic environment

Info

Publication number
AU6841396A
AU6841396A AU68413/96A AU6841396A AU6841396A AU 6841396 A AU6841396 A AU 6841396A AU 68413/96 A AU68413/96 A AU 68413/96A AU 6841396 A AU6841396 A AU 6841396A AU 6841396 A AU6841396 A AU 6841396A
Authority
AU
Australia
Prior art keywords
acoustic environment
signal preprocessing
echo cancelling
cancelling
echo
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.)
Abandoned
Application number
AU68413/96A
Inventor
Ingvar Claesson
Mattias Dahl
Sven Nordebo
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU6841396A publication Critical patent/AU6841396A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
AU68413/96A 1995-08-21 1996-08-21 Echo cancelling using signal preprocessing in an acoustic environment Abandoned AU6841396A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US51747395A 1995-08-21 1995-08-21
US517473 1995-08-21
PCT/SE1996/001037 WO1997007624A1 (en) 1995-08-21 1996-08-21 Echo cancelling using signal preprocessing in an acoustic environment

Publications (1)

Publication Number Publication Date
AU6841396A true AU6841396A (en) 1997-03-12

Family

ID=24059953

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68413/96A Abandoned AU6841396A (en) 1995-08-21 1996-08-21 Echo cancelling using signal preprocessing in an acoustic environment

Country Status (2)

Country Link
AU (1) AU6841396A (en)
WO (1) WO1997007624A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI114422B (en) 1997-09-04 2004-10-15 Nokia Corp Source speech activity detection
DE60129955D1 (en) * 2000-05-26 2007-09-27 Koninkl Philips Electronics Nv METHOD AND DEVICE FOR ACOUSTIC ECHOUNTER PRESSURE WITH ADAPTIVE RADIATION
US7680265B2 (en) 2003-12-12 2010-03-16 Continental Automotive Systems, Inc. Echo canceler circuit and method
US7599483B2 (en) 2003-12-12 2009-10-06 Temic Automotive Of North America, Inc. Echo canceler circuit and method
US9103798B2 (en) 2011-12-07 2015-08-11 Ndt Technologies, Inc. Magnetic inspection device and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1458663A (en) * 1972-12-15 1976-12-15 Ard Anstalt Microphone circuits
US5121426A (en) * 1989-12-22 1992-06-09 At&T Bell Laboratories Loudspeaking telephone station including directional microphone

Also Published As

Publication number Publication date
WO1997007624A1 (en) 1997-02-27

Similar Documents

Publication Publication Date Title
AU7410796A (en) Transducer for sonic logging-while-drilling
EP0727259A3 (en) Ultrasonic transducer
EP0766446A3 (en) Method and apparatus for multi-channel acoustic echo cancellation
AU3012397A (en) Acoustic echo canceler
AU5022396A (en) An acoustic transmisson system
DE69636361D1 (en) Acoustic echo canceler
AU6942594A (en) Distributed acoustic sensor
AU7558496A (en) Capacitive transducer
AU6665594A (en) Diagnostic impedance measuring system
AU4649097A (en) Noise pair velocity and range echo location system
AU4579197A (en) Echo canceller with silence detection
AU3036995A (en) Echo canceller capable of cancelling an echo signal at a high speed
AU1285897A (en) Photothermal acoustic device
AU2697695A (en) Acoustic transducer
AU6730296A (en) Ultrasonic probes for use in harsh environments
AU2865597A (en) Loudness-controlled processing of acoustic signals
AU7080494A (en) Acoustic transmitting and receiving unit
AU6022296A (en) Acoustic transducer components
AU7073196A (en) Ultrasonic testing (ut) system signal processing
AU1046197A (en) An impedance means
AU5132496A (en) Wave suppression means for large waves
AU1030595A (en) Electromagnetic acoustic transducers
EP0858721A4 (en) Acoustic transducer
EP0749005A3 (en) Acoustic transducer
DE69632426D1 (en) Acoustic echo canceller