IL107100A - רשת מבטלת הד - Google Patents

רשת מבטלת הד

Info

Publication number
IL107100A
IL107100A IL10710093A IL10710093A IL107100A IL 107100 A IL107100 A IL 107100A IL 10710093 A IL10710093 A IL 10710093A IL 10710093 A IL10710093 A IL 10710093A IL 107100 A IL107100 A IL 107100A
Authority
IL
Israel
Prior art keywords
signal
echo
state
end speech
filter
Prior art date
Application number
IL10710093A
Other languages
English (en)
Other versions
IL107100A0 (en
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of IL107100A0 publication Critical patent/IL107100A0/xx
Publication of IL107100A publication Critical patent/IL107100A/he

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
    • H04B3/234—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 using double talk detection
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Fish Paste Products (AREA)
  • Primary Cells (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Catalysts (AREA)
  • Polarising Elements (AREA)
IL10710093A 1992-09-25 1993-09-23 רשת מבטלת הד IL107100A (he)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/951,074 US5307405A (en) 1992-09-25 1992-09-25 Network echo canceller

Publications (2)

Publication Number Publication Date
IL107100A0 IL107100A0 (en) 1993-12-28
IL107100A true IL107100A (he) 1996-11-14

Family

ID=25491228

Family Applications (1)

Application Number Title Priority Date Filing Date
IL10710093A IL107100A (he) 1992-09-25 1993-09-23 רשת מבטלת הד

Country Status (25)

Country Link
US (4) US5307405A (he)
EP (3) EP1119172B1 (he)
JP (2) JP3447735B2 (he)
KR (1) KR100284202B1 (he)
CN (1) CN1041374C (he)
AT (1) ATE209837T1 (he)
AU (1) AU660243B2 (he)
BG (1) BG61985B1 (he)
BR (1) BR9305647A (he)
CA (1) CA2123002C (he)
CZ (1) CZ288667B6 (he)
DE (1) DE69331223T2 (he)
ES (1) ES2398091T3 (he)
FI (1) FI110346B (he)
HK (1) HK1015215A1 (he)
HU (1) HU215224B (he)
IL (1) IL107100A (he)
MX (1) MX9305889A (he)
NO (1) NO309835B1 (he)
PL (1) PL173748B1 (he)
RO (1) RO114392B1 (he)
RU (1) RU2109408C1 (he)
SK (1) SK282101B6 (he)
WO (1) WO1994008418A1 (he)
ZA (1) ZA936322B (he)

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