DE69943185D1 - Hintergrundenergieschätzung - Google Patents

Hintergrundenergieschätzung

Info

Publication number
DE69943185D1
DE69943185D1 DE69943185T DE69943185T DE69943185D1 DE 69943185 D1 DE69943185 D1 DE 69943185D1 DE 69943185 T DE69943185 T DE 69943185T DE 69943185 T DE69943185 T DE 69943185T DE 69943185 D1 DE69943185 D1 DE 69943185D1
Authority
DE
Germany
Prior art keywords
energy
minimum energy
current
previous
determination
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 - Lifetime
Application number
DE69943185T
Other languages
English (en)
Inventor
Bogdan Kosanovic
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.)
Telogy Networks Inc
Original Assignee
Telogy Networks 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 Telogy Networks Inc filed Critical Telogy Networks Inc
Application granted granted Critical
Publication of DE69943185D1 publication Critical patent/DE69943185D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/26—Monitoring; Testing of receivers using historical data, averaging values or statistics
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
    • G10L2025/786—Adaptive threshold
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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
DE69943185T 1999-08-10 1999-08-10 Hintergrundenergieschätzung Expired - Lifetime DE69943185D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1999/017999 WO2001011604A1 (en) 1999-08-10 1999-08-10 Background energy estimation
US09/371,033 US6157670A (en) 1999-08-10 1999-08-10 Background energy estimation

Publications (1)

Publication Number Publication Date
DE69943185D1 true DE69943185D1 (de) 2011-03-24

Family

ID=23462209

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69943185T Expired - Lifetime DE69943185D1 (de) 1999-08-10 1999-08-10 Hintergrundenergieschätzung

Country Status (7)

Country Link
US (1) US6157670A (de)
EP (1) EP1125275B1 (de)
JP (1) JP2003529960A (de)
AT (1) ATE498177T1 (de)
AU (1) AU5472199A (de)
DE (1) DE69943185D1 (de)
WO (1) WO2001011604A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6459914B1 (en) * 1998-05-27 2002-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Signal noise reduction by spectral subtraction using spectrum dependent exponential gain function averaging
US6381570B2 (en) * 1999-02-12 2002-04-30 Telogy Networks, Inc. Adaptive two-threshold method for discriminating noise from speech in a communication signal
US7457750B2 (en) 2000-10-13 2008-11-25 At&T Corp. Systems and methods for dynamic re-configurable speech recognition
CN100438743C (zh) * 2001-10-16 2008-11-26 松下电器产业株式会社 运送带送带器和电子部件安装装置及电子部件输送方法
US20030223597A1 (en) * 2002-05-29 2003-12-04 Sunil Puria Adapative noise compensation for dynamic signal enhancement
US7539614B2 (en) * 2003-11-14 2009-05-26 Nxp B.V. System and method for audio signal processing using different gain factors for voiced and unvoiced phonemes
EP1861846B1 (de) * 2005-03-24 2011-09-07 Mindspeed Technologies, Inc. Adaptive stimmenmodus-erweiterung für einen stimmenaktivitäts-detektor
US8073042B1 (en) * 2005-04-13 2011-12-06 Cypress Semiconductor Corporation Recursive range controller
JP4551817B2 (ja) * 2005-05-20 2010-09-29 Ｏｋｉセミコンダクタ株式会社 ノイズレベル推定方法及びその装置
US8015000B2 (en) * 2006-08-03 2011-09-06 Broadcom Corporation Classification-based frame loss concealment for audio signals
US20080033583A1 (en) * 2006-08-03 2008-02-07 Broadcom Corporation Robust Speech/Music Classification for Audio Signals
FR2944640A1 (fr) * 2009-04-17 2010-10-22 France Telecom Procede et dispositif d'evaluation objective de la qualite vocale d'un signal de parole prenant en compte la classification du bruit de fond contenu dans le signal.
JP5333307B2 (ja) * 2010-03-19 2013-11-06 沖電気工業株式会社 雑音推定方法及び雑音推定器
US9280982B1 (en) 2011-03-29 2016-03-08 Google Technology Holdings LLC Nonstationary noise estimator (NNSE)
WO2015094083A1 (en) 2013-12-19 2015-06-25 Telefonaktiebolaget L M Ericsson (Publ) Estimation of background noise in audio signals

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32172A (en) * 1861-04-30 Printing-press
US4821325A (en) * 1984-11-08 1989-04-11 American Telephone And Telegraph Company, At&T Bell Laboratories Endpoint detector
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US5305307A (en) * 1991-01-04 1994-04-19 Picturetel Corporation Adaptive acoustic echo canceller having means for reducing or eliminating echo in a plurality of signal bandwidths
US5734789A (en) * 1992-06-01 1998-03-31 Hughes Electronics Voiced, unvoiced or noise modes in a CELP vocoder
US5553081A (en) * 1994-04-08 1996-09-03 Echelon Corporation Apparatus and method for detecting a signal in a communications system
US5749072A (en) * 1994-06-03 1998-05-05 Motorola Inc. Communications device responsive to spoken commands and methods of using same
US5659622A (en) * 1995-11-13 1997-08-19 Motorola, Inc. Method and apparatus for suppressing noise in a communication system
US5819217A (en) 1995-12-21 1998-10-06 Nynex Science & Technology, Inc. Method and system for differentiating between speech and noise
US5890109A (en) * 1996-03-28 1999-03-30 Intel Corporation Re-initializing adaptive parameters for encoding audio signals
US5771440A (en) * 1996-05-31 1998-06-23 Motorola, Inc. Communication device with dynamic echo suppression and background noise estimation
US5920834A (en) * 1997-01-31 1999-07-06 Qualcomm Incorporated Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system
WO1999012155A1 (en) 1997-09-30 1999-03-11 Qualcomm Incorporated Channel gain modification system and method for noise reduction in voice communication

Also Published As

Publication number Publication date
ATE498177T1 (de) 2011-02-15
EP1125275B1 (de) 2011-02-09
EP1125275A1 (de) 2001-08-22
EP1125275A4 (de) 2009-06-24
JP2003529960A (ja) 2003-10-07
WO2001011604A1 (en) 2001-02-15
US6157670A (en) 2000-12-05
AU5472199A (en) 2001-03-05

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