SG11201407085UA - A universal reconfigurable echo cancellation system - Google Patents

A universal reconfigurable echo cancellation system

Info

Publication number
SG11201407085UA
SG11201407085UA SG11201407085UA SG11201407085UA SG11201407085UA SG 11201407085U A SG11201407085U A SG 11201407085UA SG 11201407085U A SG11201407085U A SG 11201407085UA SG 11201407085U A SG11201407085U A SG 11201407085UA SG 11201407085U A SG11201407085U A SG 11201407085UA
Authority
SG
Singapore
Prior art keywords
echo
international
domain
echo cancellation
cancellation system
Prior art date
Application number
SG11201407085UA
Other languages
English (en)
Inventor
Steven Verity
Jun Yang
Ian Minett
Robert Ridder
Original Assignee
Creative Tech Ltd
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 Creative Tech Ltd filed Critical Creative Tech Ltd
Publication of SG11201407085UA publication Critical patent/SG11201407085UA/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • 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
    • 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
    • H04M9/082—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 echo cancellers
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
SG11201407085UA 2012-04-30 2013-04-30 A universal reconfigurable echo cancellation system SG11201407085UA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261640681P 2012-04-30 2012-04-30
PCT/US2013/038958 WO2013166080A1 (fr) 2012-04-30 2013-04-30 Système d'annulation d'écho re-configurable universel

Publications (1)

Publication Number Publication Date
SG11201407085UA true SG11201407085UA (en) 2014-12-30

Family

ID=49514835

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201407085UA SG11201407085UA (en) 2012-04-30 2013-04-30 A universal reconfigurable echo cancellation system

Country Status (5)

Country Link
US (1) US9451078B2 (fr)
EP (1) EP2845189B1 (fr)
CN (1) CN104395957B (fr)
SG (1) SG11201407085UA (fr)
WO (1) WO2013166080A1 (fr)

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Also Published As

Publication number Publication date
US20150126255A1 (en) 2015-05-07
CN104395957A (zh) 2015-03-04
US9451078B2 (en) 2016-09-20
EP2845189A1 (fr) 2015-03-11
EP2845189A4 (fr) 2016-01-13
CN104395957B (zh) 2018-02-13
WO2013166080A1 (fr) 2013-11-07
EP2845189B1 (fr) 2018-09-05

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