ES2174484T3 - PROCEDURE AND DEVICE FOR NOISE SUPPRESSION OF A WORD NUMBER SIGNAL. - Google Patents

PROCEDURE AND DEVICE FOR NOISE SUPPRESSION OF A WORD NUMBER SIGNAL.

Info

Publication number
ES2174484T3
ES2174484T3 ES98944000T ES98944000T ES2174484T3 ES 2174484 T3 ES2174484 T3 ES 2174484T3 ES 98944000 T ES98944000 T ES 98944000T ES 98944000 T ES98944000 T ES 98944000T ES 2174484 T3 ES2174484 T3 ES 2174484T3
Authority
ES
Spain
Prior art keywords
frame
word signal
word
noise suppression
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
ES98944000T
Other languages
Spanish (es)
Inventor
Philip Lockwood
Stephane Lubiarz
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.)
EADS Defence and Security Networks SAS
Original Assignee
EADS Defence and Security Networks SAS
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 EADS Defence and Security Networks SAS filed Critical EADS Defence and Security Networks SAS
Application granted granted Critical
Publication of ES2174484T3 publication Critical patent/ES2174484T3/en
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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • 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
    • G10L21/0264—Noise filtering characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
    • 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
    • G10L25/90—Pitch determination of speech signals

Abstract

Procedimiento de supresión de ruido de una señal numérica de palabra (s) tratada por trazas sucesivas, en el cual: se efectúa un análisis armónico de la señal de palabra para estimar una frecuencia tonal (fp) dela señal de palabra en cada trama donde presenta actividad vocal; se calculan unas componentes espectrales (Sn;f , Sn;i ) delaseñal de palabra en cada trama; se calculan para cada trama, unas estimaciones de componentes espectrales del ruido comprendidas en la señal de palabra; se efectúa una sustracción espectral que comprende por lo menos una etapa que consiste en sustraer respectivamente, de cada componente espectral de la señal de palabra de la trama (Sn;f ), una cantidad que depende de parámetros que incluyen por lo menos la estimación de la componente espectral correspondiente al ruido para dicha trama y el valor de la frecuencia tonal estimada.Noise suppression procedure of a numerical signal of word (s) treated by successive traces, in which: a harmonic analysis of the word signal is performed to estimate a tonal frequency (fp) of the word signal in each frame where it presents vocal activity; spectral components (Sn; f, Sn; i) the word signal in each frame are calculated; estimates of each spectral component of the noise included in the word signal are calculated for each frame; a spectral subtraction is carried out which comprises at least one stage consisting in subtracting respectively, from each spectral component of the frame word signal (Sn; f), an amount that depends on parameters that include at least the estimation of the spectral component corresponding to the noise for said frame and the value of the estimated tonal frequency.

ES98944000T 1997-09-18 1998-09-16 PROCEDURE AND DEVICE FOR NOISE SUPPRESSION OF A WORD NUMBER SIGNAL. Expired - Lifetime ES2174484T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9711642A FR2768546B1 (en) 1997-09-18 1997-09-18 METHOD FOR NOISE REDUCTION OF A DIGITAL SPOKEN SIGNAL

Publications (1)

Publication Number Publication Date
ES2174484T3 true ES2174484T3 (en) 2002-11-01

Family

ID=9511229

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98944000T Expired - Lifetime ES2174484T3 (en) 1997-09-18 1998-09-16 PROCEDURE AND DEVICE FOR NOISE SUPPRESSION OF A WORD NUMBER SIGNAL.

Country Status (10)

Country Link
EP (1) EP1016073B1 (en)
JP (1) JP2001516902A (en)
CN (1) CN1276896A (en)
AU (1) AU9169098A (en)
BR (1) BR9812655A (en)
CA (1) CA2304015A1 (en)
DE (1) DE69804329T2 (en)
ES (1) ES2174484T3 (en)
FR (1) FR2768546B1 (en)
WO (1) WO1999014739A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379550A (en) * 2001-09-11 2003-03-12 Barrington Dyer Printed code recording and playing system, for music, speech and sounds
ES2349718T3 (en) * 2004-09-16 2011-01-10 France Telecom TREATMENT PROCESS OF NOISE ACOUSTIC SIGNS AND DEVICE FOR THE PERFORMANCE OF THE PROCEDURE.
FR2899424A1 (en) * 2006-03-28 2007-10-05 France Telecom Audio channel multi-channel/binaural e.g. transaural, three-dimensional spatialization method for e.g. ear phone, involves breaking down filter into delay and amplitude values for samples, and extracting filter`s spectral module on samples
KR101390433B1 (en) 2009-03-31 2014-04-29 후아웨이 테크놀러지 컴퍼니 리미티드 Signal de-noising method, signal de-noising apparatus, and audio decoding system
CN101859569B (en) * 2010-05-27 2012-08-15 上海朗谷电子科技有限公司 Method for lowering noise of digital audio-frequency signal
CN104251934B (en) * 2013-06-26 2018-08-14 华为技术有限公司 Harmonic analysis method and device and the method and apparatus for determining clutter between harmonic wave
CN114038473A (en) * 2019-01-29 2022-02-11 桂林理工大学南宁分校 Interphone system for processing single-module data
CN109817241B (en) * 2019-02-18 2021-06-01 腾讯音乐娱乐科技（深圳）有限公司 Audio processing method, device and storage medium
CN116580712B (en) * 2023-07-14 2023-09-15 深圳攀高医疗电子有限公司 Voice processing method, voice processing system and waist therapeutic instrument

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU633673B2 (en) * 1990-01-18 1993-02-04 Matsushita Electric Industrial Co., Ltd. Signal processing device
EP0459362B1 (en) * 1990-05-28 1997-01-08 Matsushita Electric Industrial Co., Ltd. Voice signal processor
US5469087A (en) * 1992-06-25 1995-11-21 Noise Cancellation Technologies, Inc. Control system using harmonic filters
US5555190A (en) * 1995-07-12 1996-09-10 Micro Motion, Inc. Method and apparatus for adaptive line enhancement in Coriolis mass flow meter measurement

Also Published As

Publication number Publication date
CN1276896A (en) 2000-12-13
DE69804329T2 (en) 2002-11-14
AU9169098A (en) 1999-04-05
FR2768546A1 (en) 1999-03-19
EP1016073B1 (en) 2002-03-20
EP1016073A1 (en) 2000-07-05
BR9812655A (en) 2000-08-22
CA2304015A1 (en) 1999-03-25
JP2001516902A (en) 2001-10-02
DE69804329D1 (en) 2002-04-25
FR2768546B1 (en) 2000-07-21
WO1999014739A1 (en) 1999-03-25

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