WO2007111645A3 - Method and system for reducing effects of noise producing artifacts in a voice codec - Google Patents

Method and system for reducing effects of noise producing artifacts in a voice codec Download PDF

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Publication number
WO2007111645A3
WO2007111645A3 PCT/US2006/041434 US2006041434W WO2007111645A3 WO 2007111645 A3 WO2007111645 A3 WO 2007111645A3 US 2006041434 W US2006041434 W US 2006041434W WO 2007111645 A3 WO2007111645 A3 WO 2007111645A3
Authority
WO
WIPO (PCT)
Prior art keywords
total input
input level
gain value
noise producing
voice codec
Prior art date
Application number
PCT/US2006/041434
Other languages
French (fr)
Other versions
WO2007111645A2 (en
Inventor
Yang Gao
Eyal Shlomot
Original Assignee
Mindspeed Tech Inc
Yang Gao
Eyal Shlomot
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 Mindspeed Tech Inc, Yang Gao, Eyal Shlomot filed Critical Mindspeed Tech Inc
Priority to AT06817327T priority Critical patent/ATE491262T1/en
Priority to EP06817327A priority patent/EP1997101B1/en
Priority to BRPI0621563-7A priority patent/BRPI0621563A2/en
Priority to DE602006018791T priority patent/DE602006018791D1/en
Publication of WO2007111645A2 publication Critical patent/WO2007111645A2/en
Publication of WO2007111645A3 publication Critical patent/WO2007111645A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3089—Control of digital or coded signals
    • 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
    • G10L21/04—Time compression or expansion
    • G10L21/043—Time compression or expansion by changing speed
    • G10L21/045—Time compression or expansion by changing speed using thinning out or insertion of a waveform
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present

Abstract

There is provided a method of reducing effect of noise producing artifacts in a speech signal. The method comprises obtaining (310) a plurality of incoming samples of a speech subframe; summing (310) an energy level for each of the plurality of incoming samples to generate a total input level; comparing (320) the total input level with a predetermined threshold; setting (340) a gain value as a function of the total input level, where the gain value is between zero (0) and one (1), and where the function results in a lower gain value when the total input level is indicative of a silence area than when the total input level is indicative of a non-silence area; and multiplying (350) the plurality of incoming samples of the speech subframe by the gain value.
PCT/US2006/041434 2006-03-20 2006-10-23 Method and system for reducing effects of noise producing artifacts in a voice codec WO2007111645A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT06817327T ATE491262T1 (en) 2006-03-20 2006-10-23 METHOD AND SYSTEM FOR REDUCING THE EFFECTS OF NOISE PRODUCING ARTIFACTS
EP06817327A EP1997101B1 (en) 2006-03-20 2006-10-23 Method and system for reducing effects of noise producing artifacts
BRPI0621563-7A BRPI0621563A2 (en) 2006-03-20 2006-10-23 method and system for reducing effects of noise producing artifacts in a voice codec
DE602006018791T DE602006018791D1 (en) 2006-03-20 2006-10-23 METHOD AND SYSTEM FOR REDUCING THE EFFECTS OF SOUNDPRODUCTIVE ARTIFACTS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/385,553 US7454335B2 (en) 2006-03-20 2006-03-20 Method and system for reducing effects of noise producing artifacts in a voice codec
US11/385,553 2006-03-20

Publications (2)

Publication Number Publication Date
WO2007111645A2 WO2007111645A2 (en) 2007-10-04
WO2007111645A3 true WO2007111645A3 (en) 2008-10-02

Family

ID=38519014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/041434 WO2007111645A2 (en) 2006-03-20 2006-10-23 Method and system for reducing effects of noise producing artifacts in a voice codec

Country Status (7)

Country Link
US (2) US7454335B2 (en)
EP (2) EP1997101B1 (en)
AT (1) ATE491262T1 (en)
BR (1) BRPI0621563A2 (en)
DE (1) DE602006018791D1 (en)
ES (1) ES2356503T3 (en)
WO (1) WO2007111645A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7454335B2 (en) * 2006-03-20 2008-11-18 Mindspeed Technologies, Inc. Method and system for reducing effects of noise producing artifacts in a voice codec
JP4912036B2 (en) * 2006-05-26 2012-04-04 富士通株式会社 Directional sound collecting device, directional sound collecting method, and computer program
KR101235830B1 (en) * 2007-12-06 2013-02-21 한국전자통신연구원 Apparatus for enhancing quality of speech codec and method therefor
CN100550133C (en) 2008-03-20 2009-10-14 华为技术有限公司 A kind of audio signal processing method and device
CN101483042B (en) 2008-03-20 2011-03-30 华为技术有限公司 Noise generating method and noise generating apparatus
WO2010091555A1 (en) * 2009-02-13 2010-08-19 华为技术有限公司 Stereo encoding method and device
US8447595B2 (en) * 2010-06-03 2013-05-21 Apple Inc. Echo-related decisions on automatic gain control of uplink speech signal in a communications device
EP3422346B1 (en) 2010-07-02 2020-04-22 Dolby International AB Audio encoding with decision about the application of postfiltering when decoding
US8924200B2 (en) * 2010-10-15 2014-12-30 Motorola Mobility Llc Audio signal bandwidth extension in CELP-based speech coder
JP5085769B1 (en) * 2011-06-24 2012-11-28 株式会社東芝 Acoustic control device, acoustic correction device, and acoustic correction method
CN102568473A (en) * 2011-12-30 2012-07-11 深圳市车音网科技有限公司 Method and device for recording voice signals
CN102592592A (en) * 2011-12-30 2012-07-18 深圳市车音网科技有限公司 Voice data extraction method and device
US9208798B2 (en) 2012-04-09 2015-12-08 Board Of Regents, The University Of Texas System Dynamic control of voice codec data rate
US9002030B2 (en) * 2012-05-01 2015-04-07 Audyssey Laboratories, Inc. System and method for performing voice activity detection
MX347316B (en) * 2013-01-29 2017-04-21 Fraunhofer Ges Forschung Apparatus and method for synthesizing an audio signal, decoder, encoder, system and computer program.
US9484043B1 (en) * 2014-03-05 2016-11-01 QoSound, Inc. Noise suppressor
EP3573059B1 (en) * 2018-05-25 2021-03-31 Dolby Laboratories Licensing Corporation Dialogue enhancement based on synthesized speech
CN115512687B (en) * 2022-11-08 2023-02-17 之江实验室 Voice sentence-breaking method and device, storage medium and electronic equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544250A (en) * 1994-07-18 1996-08-06 Motorola Noise suppression system and method therefor
US6453289B1 (en) * 1998-07-24 2002-09-17 Hughes Electronics Corporation Method of noise reduction for speech codecs
US20040148166A1 (en) * 2001-06-22 2004-07-29 Huimin Zheng Noise-stripping device
US20050177364A1 (en) * 2002-10-11 2005-08-11 Nokia Corporation Methods and devices for source controlled variable bit-rate wideband speech coding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0707763B1 (en) * 1993-07-07 2001-08-29 Picturetel Corporation Reduction of background noise for speech enhancement
US7454335B2 (en) * 2006-03-20 2008-11-18 Mindspeed Technologies, Inc. Method and system for reducing effects of noise producing artifacts in a voice codec

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544250A (en) * 1994-07-18 1996-08-06 Motorola Noise suppression system and method therefor
US6453289B1 (en) * 1998-07-24 2002-09-17 Hughes Electronics Corporation Method of noise reduction for speech codecs
US20040148166A1 (en) * 2001-06-22 2004-07-29 Huimin Zheng Noise-stripping device
US20050177364A1 (en) * 2002-10-11 2005-08-11 Nokia Corporation Methods and devices for source controlled variable bit-rate wideband speech coding

Also Published As

Publication number Publication date
EP2290815B1 (en) 2013-02-20
US20090070106A1 (en) 2009-03-12
ES2356503T3 (en) 2011-04-08
US8095362B2 (en) 2012-01-10
BRPI0621563A2 (en) 2012-07-10
EP2290815A3 (en) 2011-09-07
US20070219791A1 (en) 2007-09-20
ATE491262T1 (en) 2010-12-15
EP1997101A4 (en) 2010-01-06
EP1997101A2 (en) 2008-12-03
EP1997101B1 (en) 2010-12-08
DE602006018791D1 (en) 2011-01-20
US7454335B2 (en) 2008-11-18
EP2290815A2 (en) 2011-03-02
WO2007111645A2 (en) 2007-10-04

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