DE69132081T2 - Unterscheidung zwischen Information und Geräusch in einem Kommunikationssignal - Google Patents

Unterscheidung zwischen Information und Geräusch in einem Kommunikationssignal

Info

Publication number
DE69132081T2
DE69132081T2 DE69132081T DE69132081T DE69132081T2 DE 69132081 T2 DE69132081 T2 DE 69132081T2 DE 69132081 T DE69132081 T DE 69132081T DE 69132081 T DE69132081 T DE 69132081T DE 69132081 T2 DE69132081 T2 DE 69132081T2
Authority
DE
Germany
Prior art keywords
signal
level detector
signal level
detection signal
coefficient
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 - Fee Related
Application number
DE69132081T
Other languages
English (en)
Other versions
DE69132081D1 (de
Inventor
Herbert M Chen
Alan F Hendrickson
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.)
Advanced Micro Devices Inc
Original Assignee
Advanced Micro Devices 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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Publication of DE69132081D1 publication Critical patent/DE69132081D1/de
Application granted granted Critical
Publication of DE69132081T2 publication Critical patent/DE69132081T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
DE69132081T 1990-09-27 1991-08-06 Unterscheidung zwischen Information und Geräusch in einem Kommunikationssignal Expired - Fee Related DE69132081T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/589,315 US5134658A (en) 1990-09-27 1990-09-27 Apparatus for discriminating information signals from noise signals in a communication signal

Publications (2)

Publication Number Publication Date
DE69132081D1 DE69132081D1 (de) 2000-05-04
DE69132081T2 true DE69132081T2 (de) 2000-12-14

Family

ID=24357496

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69132081T Expired - Fee Related DE69132081T2 (de) 1990-09-27 1991-08-06 Unterscheidung zwischen Information und Geräusch in einem Kommunikationssignal

Country Status (5)

Country Link
US (1) US5134658A (de)
EP (1) EP0478125B1 (de)
JP (1) JPH06177955A (de)
AT (1) ATE191307T1 (de)
DE (1) DE69132081T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07273840A (ja) * 1994-03-25 1995-10-20 Nec Corp 音声帯域制御機能を有する移動電話機
US5463346A (en) * 1994-04-07 1995-10-31 Spacelabs Medical, Inc. Fast response low-pass filter
JPH08223049A (ja) * 1995-02-14 1996-08-30 Sony Corp 信号符号化方法及び装置、信号復号化方法及び装置、情報記録媒体並びに情報伝送方法
US5852661A (en) * 1995-02-17 1998-12-22 Advanced Micro Devices, Inc. Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes
JP3307138B2 (ja) * 1995-02-27 2002-07-24 ソニー株式会社 信号符号化方法及び装置、並びに信号復号化方法及び装置
US5960390A (en) * 1995-10-05 1999-09-28 Sony Corporation Coding method for using multi channel audio signals
US5825320A (en) * 1996-03-19 1998-10-20 Sony Corporation Gain control method for audio encoding device
US6978009B1 (en) * 1996-08-20 2005-12-20 Legerity, Inc. Microprocessor-controlled full-duplex speakerphone using automatic gain control
US6026168A (en) * 1997-11-14 2000-02-15 Microtek Lab, Inc. Methods and apparatus for automatically synchronizing and regulating volume in audio component systems
JP3826032B2 (ja) * 2001-12-28 2006-09-27 株式会社東芝 音声認識装置、音声認識方法及び音声認識プログラム
WO2005053210A2 (en) * 2003-11-25 2005-06-09 Arcwave, Inc. Reduction of wireless links noise injection to a cable modem
US7664635B2 (en) * 2005-09-08 2010-02-16 Gables Engineering, Inc. Adaptive voice detection method and system
US8621093B2 (en) * 2007-05-21 2013-12-31 Google Inc. Non-blocking of head end initiated revocation and delivery of entitlements non-addressable digital media network
US10236850B2 (en) * 2016-06-15 2019-03-19 Ess Technology, Inc. Signal processor using multiple frequency bands

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513260A (en) * 1967-10-13 1970-05-19 Ibm Speech presence detector
US3865986A (en) * 1973-10-03 1975-02-11 Tad Avanti Voice operated electric circuit
US3873926A (en) * 1974-05-03 1975-03-25 Motorola Inc Audio frequency squelch system
US4000369A (en) * 1974-12-05 1976-12-28 Rockwell International Corporation Analog signal channel equalization with signal-in-noise embodiment
FR2451680A1 (fr) * 1979-03-12 1980-10-10 Soumagne Joel Discriminateur parole/silence pour interpolation de la parole
FR2466825A1 (fr) * 1979-09-28 1981-04-10 Thomson Csf Dispositif de detection de signaux vocaux et systeme d'alternat comportant un tel dispositif
FR2502374B1 (fr) * 1981-03-18 1986-04-18 Trt Telecom Radio Electr Dispositif de discrimination de la parole
US4484344A (en) * 1982-03-01 1984-11-20 Rockwell International Corporation Voice operated switch
JPH0748695B2 (ja) * 1986-05-23 1995-05-24 株式会社日立製作所 音声符号化方式
ATE69132T1 (de) * 1987-02-17 1991-11-15 Siemens Ag Schaltungsanordnung zum erkennen von schwingungen.
US4754486A (en) * 1987-04-13 1988-06-28 John J. Lazzeroni Motorcycle stereo audio system with VOX intercom
JP2551050B2 (ja) * 1987-11-13 1996-11-06 ソニー株式会社 有音無音判定回路
US4879745A (en) * 1988-10-12 1989-11-07 Ibm Corporation Half-duplex speakerphone
US4965835A (en) * 1989-06-01 1990-10-23 Hochstein Peter A Signal sensing circuit
US5036540A (en) * 1989-09-28 1991-07-30 Motorola, Inc. Speech operated noise attenuation device

Also Published As

Publication number Publication date
DE69132081D1 (de) 2000-05-04
ATE191307T1 (de) 2000-04-15
JPH06177955A (ja) 1994-06-24
EP0478125B1 (de) 2000-03-29
US5134658A (en) 1992-07-28
EP0478125A3 (en) 1992-12-02
EP0478125A2 (de) 1992-04-01

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee