ES2163585T3 - Metodo y aparato para la reduccion de ruido. - Google Patents

Metodo y aparato para la reduccion de ruido.

Info

Publication number
ES2163585T3
ES2163585T3 ES96301059T ES96301059T ES2163585T3 ES 2163585 T3 ES2163585 T3 ES 2163585T3 ES 96301059 T ES96301059 T ES 96301059T ES 96301059 T ES96301059 T ES 96301059T ES 2163585 T3 ES2163585 T3 ES 2163585T3
Authority
ES
Spain
Prior art keywords
noise
level
reducing
frequency spectrum
speech signal
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
ES96301059T
Other languages
English (en)
Inventor
Joseph Chan
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ES2163585T3 publication Critical patent/ES2163585T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02163—Only one microphone
    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain
    • 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
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

Abstract

SE PRESENTA UN METODO PARA REDUCIR UN RUIDO EN UNA SEÑAL DE VOZ ELIMINANDO EL RUIDO DE UNA SEÑAL DE VOZ DE ENTRADA. EL METODO DE REDUCCION DE RUIDO INCLUYE LA CONVERSION DE LA SEÑAL DE VOZ DE ENTRADA EN UN ESPECTRO DE FRECUENCIA, DETERMINANDO LAS CARACTERISTICAS DEL FILTRO EN BASE A UN PRIMER VALOR OBTENIDO SOBRE LA BASE DE LA PROPORCION DE UN NIVEL DEL ESPECTRO DE FRECUENCIA CON RESPECTO A UN NIVEL ESTIMADO DEL ESPECTRO DE RUIDO CONTENIDO EN EL ESPECTRO DE FRECUENCIA Y UN SEGUNDO VALOR HALLADO A PARTIR DEL VALOR MAXIMO DE LA PROPORCION DEL NIVEL DE LA SEÑAL EN BASE AL MARCO DEL ESPECTRO DE FRECUENCIA CON RESPECTO AL NIVEL DE RUIDO ESTIMADO, Y REDUCIENDO EL RUIDO EN LA SEÑAL DE VOZ DE ENTRADA MEDIANTE FILTRADO SENSIBLE A LAS CARACTERISTICAS DEL FILTRO. TAMBIEN SE PRESENTA UN APARATO CORRESPONDIENTE PARA REDUCIR EL RUIDO.
ES96301059T 1995-02-17 1996-02-16 Metodo y aparato para la reduccion de ruido. Expired - Lifetime ES2163585T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02933695A JP3484801B2 (ja) 1995-02-17 1995-02-17 音声信号の雑音低減方法及び装置

Publications (1)

Publication Number Publication Date
ES2163585T3 true ES2163585T3 (es) 2002-02-01

Family

ID=12273403

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96301059T Expired - Lifetime ES2163585T3 (es) 1995-02-17 1996-02-16 Metodo y aparato para la reduccion de ruido.

Country Status (17)

Country Link
US (1) US6032114A (es)
EP (1) EP0727769B1 (es)
JP (1) JP3484801B2 (es)
KR (1) KR100414841B1 (es)
CN (1) CN1140869A (es)
AT (1) ATE209389T1 (es)
AU (1) AU696187B2 (es)
BR (1) BR9600761A (es)
CA (1) CA2169424C (es)
DE (1) DE69617069T2 (es)
ES (1) ES2163585T3 (es)
MY (1) MY121575A (es)
PL (1) PL184098B1 (es)
RU (1) RU2127454C1 (es)
SG (1) SG52253A1 (es)
TR (1) TR199600132A2 (es)
TW (1) TW297970B (es)

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US7016651B1 (en) * 2002-12-17 2006-03-21 Marvell International Ltd. Apparatus and method for measuring signal quality of a wireless communications link
US6909759B2 (en) * 2002-12-19 2005-06-21 Texas Instruments Incorporated Wireless receiver using noise levels for postscaling an equalized signal having temporal diversity
US6920193B2 (en) * 2002-12-19 2005-07-19 Texas Instruments Incorporated Wireless receiver using noise levels for combining signals having spatial diversity
US7065166B2 (en) 2002-12-19 2006-06-20 Texas Instruments Incorporated Wireless receiver and method for determining a representation of noise level of a signal
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JP4836720B2 (ja) * 2006-09-07 2011-12-14 株式会社東芝 ノイズサプレス装置
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KR101475864B1 (ko) * 2008-11-13 2014-12-23 삼성전자 주식회사 잡음 제거 장치 및 잡음 제거 방법
KR101615766B1 (ko) * 2008-12-19 2016-05-12 엘지전자 주식회사 돌발 잡음 검출기, 돌발 잡음 검출 방법 및 돌발 잡음 제거 시스템
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.
CN103348408B (zh) * 2011-02-10 2015-11-25 杜比实验室特许公司 噪声和位置外信号的组合抑制方法和系统
US8712076B2 (en) 2012-02-08 2014-04-29 Dolby Laboratories Licensing Corporation Post-processing including median filtering of noise suppression gains
US9173025B2 (en) 2012-02-08 2015-10-27 Dolby Laboratories Licensing Corporation Combined suppression of noise, echo, and out-of-location signals
US9231740B2 (en) 2013-07-12 2016-01-05 Intel Corporation Transmitter noise in system budget
US10504538B2 (en) 2017-06-01 2019-12-10 Sorenson Ip Holdings, Llc Noise reduction by application of two thresholds in each frequency band in audio signals
CN107786709A (zh) * 2017-11-09 2018-03-09 广东欧珀移动通信有限公司 通话降噪方法、装置、终端设备及计算机可读存储介质
CN111199174A (zh) * 2018-11-19 2020-05-26 北京京东尚科信息技术有限公司 信息处理方法、装置、系统和计算机可读存储介质
CN111477237B (zh) * 2019-01-04 2022-01-07 北京京东尚科信息技术有限公司 音频降噪方法、装置和电子设备
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Also Published As

Publication number Publication date
PL312845A1 (en) 1996-08-19
US6032114A (en) 2000-02-29
TR199600132A2 (tr) 1996-10-21
TW297970B (es) 1997-02-11
PL184098B1 (pl) 2002-08-30
JP3484801B2 (ja) 2004-01-06
DE69617069T2 (de) 2002-07-11
SG52253A1 (en) 1998-09-28
KR960032294A (ko) 1996-09-17
BR9600761A (pt) 1997-12-23
ATE209389T1 (de) 2001-12-15
AU4444496A (en) 1996-08-29
EP0727769A3 (en) 1998-04-29
DE69617069D1 (de) 2002-01-03
CA2169424A1 (en) 1996-08-18
EP0727769A2 (en) 1996-08-21
CA2169424C (en) 2007-07-10
MY121575A (en) 2006-02-28
AU696187B2 (en) 1998-09-03
RU2127454C1 (ru) 1999-03-10
JPH08221093A (ja) 1996-08-30
CN1140869A (zh) 1997-01-22
EP0727769B1 (en) 2001-11-21
KR100414841B1 (ko) 2004-03-10

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