WO2006116024A3 - Systems, methods, and apparatus for gain factor attenuation - Google Patents

Systems, methods, and apparatus for gain factor attenuation Download PDF

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Publication number
WO2006116024A3
WO2006116024A3 PCT/US2006/014992 US2006014992W WO2006116024A3 WO 2006116024 A3 WO2006116024 A3 WO 2006116024A3 US 2006014992 W US2006014992 W US 2006014992W WO 2006116024 A3 WO2006116024 A3 WO 2006116024A3
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WO
WIPO (PCT)
Prior art keywords
gain factor
signal
systems
methods
envelopes
Prior art date
Application number
PCT/US2006/014992
Other languages
French (fr)
Other versions
WO2006116024A2 (en
Inventor
Koen Bernard Vos
Ananthapadmanabhan A Kandhadai
Original Assignee
Qualcomm Inc
Koen Bernard Vos
Ananthapadmanabhan A Kandhadai
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 Qualcomm Inc, Koen Bernard Vos, Ananthapadmanabhan A Kandhadai filed Critical Qualcomm Inc
Priority to CN2006800215134A priority Critical patent/CN101199003B/en
Priority to EP06758453.2A priority patent/EP1875464B9/en
Publication of WO2006116024A2 publication Critical patent/WO2006116024A2/en
Publication of WO2006116024A3 publication Critical patent/WO2006116024A3/en

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Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208Subband vocoders
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16Vocoder architecture
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Abstract

A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.
PCT/US2006/014992 2005-04-22 2006-04-21 Systems, methods, and apparatus for gain factor attenuation WO2006116024A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2006800215134A CN101199003B (en) 2005-04-22 2006-04-21 Systems, methods, and apparatus for gain factor attenuation
EP06758453.2A EP1875464B9 (en) 2005-04-22 2006-04-21 Method, storage medium and apparatus for gain factor attenuation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67396505P 2005-04-22 2005-04-22
US60/673,965 2005-04-22

Publications (2)

Publication Number Publication Date
WO2006116024A2 WO2006116024A2 (en) 2006-11-02
WO2006116024A3 true WO2006116024A3 (en) 2007-03-22

Family

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Family Applications (2)

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PCT/US2006/014993 WO2006116025A1 (en) 2005-04-22 2006-04-21 Systems, methods, and apparatus for gain factor smoothing
PCT/US2006/014992 WO2006116024A2 (en) 2005-04-22 2006-04-21 Systems, methods, and apparatus for gain factor attenuation

Family Applications Before (1)

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Country Status (14)

Country Link
US (2) US9043214B2 (en)
EP (2) EP1875464B9 (en)
KR (2) KR100947421B1 (en)
CN (3) CN101199004B (en)
DK (1) DK1875463T3 (en)
ES (1) ES2705589T3 (en)
HU (1) HUE040628T2 (en)
NO (1) NO20075509L (en)
PL (1) PL1875463T3 (en)
PT (1) PT1875463T (en)
SI (1) SI1875463T1 (en)
TR (1) TR201821299T4 (en)
TW (2) TWI317933B (en)
WO (2) WO2006116025A1 (en)

Families Citing this family (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070085982A (en) * 2004-12-10 2007-08-27 마츠시타 덴끼 산교 가부시키가이샤 Wide-band encoding device, wide-band lsp prediction device, band scalable encoding device, wide-band encoding method
ES2636443T3 (en) 2005-04-01 2017-10-05 Qualcomm Incorporated Systems, procedures and apparatus for broadband voice coding
CN101199004B (en) * 2005-04-22 2011-11-09 高通股份有限公司 Systems, methods, and apparatus for gain factor smoothing
US7415372B2 (en) * 2005-08-26 2008-08-19 Step Communications Corporation Method and apparatus for improving noise discrimination in multiple sensor pairs
US20070050441A1 (en) * 2005-08-26 2007-03-01 Step Communications Corporation,A Nevada Corporati Method and apparatus for improving noise discrimination using attenuation factor
US7436188B2 (en) * 2005-08-26 2008-10-14 Step Communications Corporation System and method for improving time domain processed sensor signals
US20070047742A1 (en) * 2005-08-26 2007-03-01 Step Communications Corporation, A Nevada Corporation Method and system for enhancing regional sensitivity noise discrimination
US20070047743A1 (en) * 2005-08-26 2007-03-01 Step Communications Corporation, A Nevada Corporation Method and apparatus for improving noise discrimination using enhanced phase difference value
US7472041B2 (en) * 2005-08-26 2008-12-30 Step Communications Corporation Method and apparatus for accommodating device and/or signal mismatch in a sensor array
US7619563B2 (en) 2005-08-26 2009-11-17 Step Communications Corporation Beam former using phase difference enhancement
KR101376556B1 (en) * 2006-01-17 2014-04-02 코닌클리케 필립스 엔.브이. Detection of presence of television signals embedded in noise using cyclostationary toolbox
US9454974B2 (en) * 2006-07-31 2016-09-27 Qualcomm Incorporated Systems, methods, and apparatus for gain factor limiting
US8725499B2 (en) * 2006-07-31 2014-05-13 Qualcomm Incorporated Systems, methods, and apparatus for signal change detection
US8260609B2 (en) * 2006-07-31 2012-09-04 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
US8532984B2 (en) 2006-07-31 2013-09-10 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of active frames
JP4827661B2 (en) * 2006-08-30 2011-11-30 富士通株式会社 Signal processing method and apparatus
US8639500B2 (en) * 2006-11-17 2014-01-28 Samsung Electronics Co., Ltd. Method, medium, and apparatus with bandwidth extension encoding and/or decoding
KR100788706B1 (en) * 2006-11-28 2007-12-26 삼성전자주식회사 Method for encoding and decoding of broadband voice signal
KR101379263B1 (en) * 2007-01-12 2014-03-28 삼성전자주식회사 Method and apparatus for decoding bandwidth extension
CN101606195B (en) * 2007-02-12 2012-05-02 杜比实验室特许公司 Improved ratio of speech to non-speech audio such as for elderly or hearing-impaired listeners
US8195454B2 (en) 2007-02-26 2012-06-05 Dolby Laboratories Licensing Corporation Speech enhancement in entertainment audio
KR101411900B1 (en) * 2007-05-08 2014-06-26 삼성전자주식회사 Method and apparatus for encoding and decoding audio signal
JP5434592B2 (en) * 2007-06-27 2014-03-05 日本電気株式会社 Audio encoding method, audio decoding method, audio encoding device, audio decoding device, program, and audio encoding / decoding system
US20100250260A1 (en) * 2007-11-06 2010-09-30 Lasse Laaksonen Encoder
BRPI0722269A2 (en) 2007-11-06 2014-04-22 Nokia Corp ENCODER FOR ENCODING AN AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL; Decoder for decoding an audio signal; Method for decoding an audio signal; Apparatus; Electronic device; CHANGER PROGRAM PRODUCT CONFIGURED TO CARRY OUT A METHOD FOR ENCODING AND DECODING AN AUDIO SIGNAL
US8688441B2 (en) * 2007-11-29 2014-04-01 Motorola Mobility Llc Method and apparatus to facilitate provision and use of an energy value to determine a spectral envelope shape for out-of-signal bandwidth content
KR101413967B1 (en) * 2008-01-29 2014-07-01 삼성전자주식회사 Encoding method and decoding method of audio signal, and recording medium thereof, encoding apparatus and decoding apparatus of audio signal
US8433582B2 (en) * 2008-02-01 2013-04-30 Motorola Mobility Llc Method and apparatus for estimating high-band energy in a bandwidth extension system
US20090201983A1 (en) * 2008-02-07 2009-08-13 Motorola, Inc. Method and apparatus for estimating high-band energy in a bandwidth extension system
EP2255534B1 (en) * 2008-03-20 2017-12-20 Samsung Electronics Co., Ltd. Apparatus and method for encoding using bandwidth extension in portable terminal
BRPI0915358B1 (en) * 2008-06-13 2020-04-22 Nokia Corp method and apparatus for hiding frame error in encoded audio data using extension encoding
ES2741963T3 (en) * 2008-07-11 2020-02-12 Fraunhofer Ges Forschung Audio signal encoders, methods for encoding an audio signal and software
MY154452A (en) 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
US8463412B2 (en) * 2008-08-21 2013-06-11 Motorola Mobility Llc Method and apparatus to facilitate determining signal bounding frequencies
US9947340B2 (en) 2008-12-10 2018-04-17 Skype Regeneration of wideband speech
GB2466201B (en) * 2008-12-10 2012-07-11 Skype Ltd Regeneration of wideband speech
GB0822537D0 (en) 2008-12-10 2009-01-14 Skype Ltd Regeneration of wideband speech
CN101604525B (en) * 2008-12-31 2011-04-06 华为技术有限公司 Pitch gain obtaining method, pitch gain obtaining device, coder and decoder
GB2466673B (en) 2009-01-06 2012-11-07 Skype Quantization
GB2466671B (en) * 2009-01-06 2013-03-27 Skype Speech encoding
GB2466675B (en) 2009-01-06 2013-03-06 Skype Speech coding
GB2466670B (en) * 2009-01-06 2012-11-14 Skype Speech encoding
US8463599B2 (en) * 2009-02-04 2013-06-11 Motorola Mobility Llc Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder
JP4932917B2 (en) * 2009-04-03 2012-05-16 株式会社エヌ・ティ・ティ・ドコモ Speech decoding apparatus, speech decoding method, and speech decoding program
JP5422664B2 (en) 2009-10-21 2014-02-19 パナソニック株式会社 Acoustic signal processing apparatus, acoustic encoding apparatus, and acoustic decoding apparatus
US20110096942A1 (en) * 2009-10-23 2011-04-28 Broadcom Corporation Noise suppression system and method
US10115386B2 (en) * 2009-11-18 2018-10-30 Qualcomm Incorporated Delay techniques in active noise cancellation circuits or other circuits that perform filtering of decimated coefficients
CN102612712B (en) * 2009-11-19 2014-03-12 瑞典爱立信有限公司 Bandwidth extension of low band audio signal
GB2476043B (en) * 2009-12-08 2016-10-26 Skype Decoding speech signals
US8447617B2 (en) * 2009-12-21 2013-05-21 Mindspeed Technologies, Inc. Method and system for speech bandwidth extension
KR101423737B1 (en) 2010-01-21 2014-07-24 한국전자통신연구원 Method and apparatus for decoding audio signal
US9525569B2 (en) * 2010-03-03 2016-12-20 Skype Enhanced circuit-switched calls
MY162594A (en) * 2010-04-14 2017-06-30 Voiceage Corp Flexible and scalable combined innovation codebook for use in celp coder and decoder
US8600737B2 (en) 2010-06-01 2013-12-03 Qualcomm Incorporated Systems, methods, apparatus, and computer program products for wideband speech coding
JP4923161B1 (en) * 2010-09-29 2012-04-25 シャープ株式会社 Mobile communication system, mobile station apparatus, base station apparatus, communication method, and integrated circuit
CN102800317B (en) 2011-05-25 2014-09-17 华为技术有限公司 Signal classification method and equipment, and encoding and decoding methods and equipment
US9059786B2 (en) * 2011-07-07 2015-06-16 Vecima Networks Inc. Ingress suppression for communication systems
ITTO20110890A1 (en) * 2011-10-05 2013-04-06 Inst Rundfunktechnik Gmbh INTERPOLATIONSSCHALTUNG ZUM INTERPOLIEREN EINES ERSTEN UND ZWEITEN MIKROFONSIGNALS.
CN103035248B (en) * 2011-10-08 2015-01-21 华为技术有限公司 Encoding method and device for audio signals
US9444452B2 (en) 2012-02-24 2016-09-13 Parade Technologies, Ltd. Frequency hopping algorithm for capacitance sensing devices
US10448161B2 (en) 2012-04-02 2019-10-15 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for gestural manipulation of a sound field
JP5998603B2 (en) * 2012-04-18 2016-09-28 ソニー株式会社 Sound detection device, sound detection method, sound feature amount detection device, sound feature amount detection method, sound interval detection device, sound interval detection method, and program
JP5997592B2 (en) * 2012-04-27 2016-09-28 株式会社Nttドコモ Speech decoder
US20140006017A1 (en) * 2012-06-29 2014-01-02 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for generating obfuscated speech signal
CN103928031B (en) * 2013-01-15 2016-03-30 华为技术有限公司 Coding method, coding/decoding method, encoding apparatus and decoding apparatus
JP6239007B2 (en) 2013-01-29 2017-11-29 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン Audio encoder, audio decoder, method for generating encoded audio information, method for generating decoded audio information, computer program and coded representation using signal adaptive bandwidth extension
AU2014211524B2 (en) * 2013-01-29 2016-07-07 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for synthesizing an audio signal, decoder, encoder, system and computer program
US9741350B2 (en) 2013-02-08 2017-08-22 Qualcomm Incorporated Systems and methods of performing gain control
WO2014136629A1 (en) 2013-03-05 2014-09-12 日本電気株式会社 Signal processing device, signal processing method, and signal processing program
US9570087B2 (en) 2013-03-15 2017-02-14 Broadcom Corporation Single channel suppression of interfering sources
MY181845A (en) * 2013-06-21 2021-01-08 Fraunhofer Ges Forschung Apparatus and method for improved concealment of the adaptive codebook in acelp-like concealment employing improved pulse resynchronization
SG11201510463WA (en) * 2013-06-21 2016-01-28 Fraunhofer Ges Forschung Apparatus and method for improved concealment of the adaptive codebook in acelp-like concealment employing improved pitch lag estimation
CN104282312B (en) 2013-07-01 2018-02-23 华为技术有限公司 Signal coding and coding/decoding method and equipment
FR3008533A1 (en) * 2013-07-12 2015-01-16 Orange OPTIMIZED SCALE FACTOR FOR FREQUENCY BAND EXTENSION IN AUDIO FREQUENCY SIGNAL DECODER
CN107818789B (en) * 2013-07-16 2020-11-17 华为技术有限公司 Decoding method and decoding device
CN104301064B (en) 2013-07-16 2018-05-04 华为技术有限公司 Handle the method and decoder of lost frames
EP2830063A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for decoding an encoded audio signal
EP3039675B1 (en) 2013-08-28 2018-10-03 Dolby Laboratories Licensing Corporation Parametric speech enhancement
TWI557726B (en) * 2013-08-29 2016-11-11 杜比國際公司 System and method for determining a master scale factor band table for a highband signal of an audio signal
CN104517610B (en) 2013-09-26 2018-03-06 华为技术有限公司 The method and device of bandspreading
CN104517611B (en) 2013-09-26 2016-05-25 华为技术有限公司 A kind of high-frequency excitation signal Forecasting Methodology and device
US9620134B2 (en) * 2013-10-10 2017-04-11 Qualcomm Incorporated Gain shape estimation for improved tracking of high-band temporal characteristics
US9564141B2 (en) * 2014-02-13 2017-02-07 Qualcomm Incorporated Harmonic bandwidth extension of audio signals
US9697843B2 (en) * 2014-04-30 2017-07-04 Qualcomm Incorporated High band excitation signal generation
CN105336336B (en) 2014-06-12 2016-12-28 华为技术有限公司 The temporal envelope processing method and processing device of a kind of audio signal, encoder
CN105336338B (en) 2014-06-24 2017-04-12 华为技术有限公司 Audio coding method and apparatus
CN106683681B (en) 2014-06-25 2020-09-25 华为技术有限公司 Method and device for processing lost frame
US9984699B2 (en) * 2014-06-26 2018-05-29 Qualcomm Incorporated High-band signal coding using mismatched frequency ranges
US9626983B2 (en) * 2014-06-26 2017-04-18 Qualcomm Incorporated Temporal gain adjustment based on high-band signal characteristic
CN106486129B (en) * 2014-06-27 2019-10-25 华为技术有限公司 A kind of audio coding method and device
KR101591597B1 (en) * 2014-07-02 2016-02-19 한양대학교 산학협력단 Adaptive muting system and mehtod using g.722 codec packet loss concealment and steepest descent criterion
KR102125410B1 (en) * 2015-02-26 2020-06-22 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. Apparatus and method for processing audio signal to obtain processed audio signal using target time domain envelope
US9837089B2 (en) * 2015-06-18 2017-12-05 Qualcomm Incorporated High-band signal generation
US10847170B2 (en) 2015-06-18 2020-11-24 Qualcomm Incorporated Device and method for generating a high-band signal from non-linearly processed sub-ranges
US9613628B2 (en) * 2015-07-01 2017-04-04 Gopro, Inc. Audio decoder for wind and microphone noise reduction in a microphone array system
EP3182411A1 (en) * 2015-12-14 2017-06-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing an encoded audio signal
EP3242295B1 (en) * 2016-05-06 2019-10-23 Nxp B.V. A signal processor
TWI594231B (en) * 2016-12-23 2017-08-01 瑞軒科技股份有限公司 Multi-band compression circuit, audio signal processing method and audio signal processing system
CN106856623B (en) * 2017-02-20 2020-02-11 鲁睿 Baseband voice signal communication noise suppression method and system
US10553222B2 (en) * 2017-03-09 2020-02-04 Qualcomm Incorporated Inter-channel bandwidth extension spectral mapping and adjustment
US10200727B2 (en) 2017-03-29 2019-02-05 International Business Machines Corporation Video encoding and transcoding for multiple simultaneous qualities of service
US10825467B2 (en) * 2017-04-21 2020-11-03 Qualcomm Incorporated Non-harmonic speech detection and bandwidth extension in a multi-source environment
US20190051286A1 (en) * 2017-08-14 2019-02-14 Microsoft Technology Licensing, Llc Normalization of high band signals in network telephony communications
CN111955020B (en) * 2018-04-11 2022-08-23 杜比国际公司 Method, apparatus and system for pre-rendering signals for audio rendering
US10847172B2 (en) * 2018-12-17 2020-11-24 Microsoft Technology Licensing, Llc Phase quantization in a speech encoder
US10957331B2 (en) 2018-12-17 2021-03-23 Microsoft Technology Licensing, Llc Phase reconstruction in a speech decoder
TWI805019B (en) * 2020-10-09 2023-06-11 弗勞恩霍夫爾協會 Apparatus, method, or computer program for processing an encoded audio scene using a parameter smoothing
CA3194884A1 (en) * 2020-10-09 2022-04-14 Franz REUTELHUBER Apparatus, method, or computer program for processing an encoded audio scene using a parameter conversion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5455888A (en) * 1992-12-04 1995-10-03 Northern Telecom Limited Speech bandwidth extension method and apparatus
US20020052738A1 (en) * 2000-05-22 2002-05-02 Erdal Paksoy Wideband speech coding system and method
WO2002086867A1 (en) * 2001-04-23 2002-10-31 Telefonaktiebolaget L M Ericsson (Publ) Bandwidth extension of acousic signals
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding

Family Cites Families (127)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158693A (en) * 1962-08-07 1964-11-24 Bell Telephone Labor Inc Speech interpolation communication system
US3855416A (en) 1972-12-01 1974-12-17 F Fuller Method and apparatus for phonation analysis leading to valid truth/lie decisions by fundamental speech-energy weighted vibratto component assessment
US3855414A (en) 1973-04-24 1974-12-17 Anaconda Co Cable armor clamp
JPS59139099A (en) 1983-01-31 1984-08-09 株式会社東芝 Voice section detector
US4616659A (en) 1985-05-06 1986-10-14 At&T Bell Laboratories Heart rate detection utilizing autoregressive analysis
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
US4747143A (en) 1985-07-12 1988-05-24 Westinghouse Electric Corp. Speech enhancement system having dynamic gain control
US4862168A (en) * 1987-03-19 1989-08-29 Beard Terry D Audio digital/analog encoding and decoding
US4805193A (en) * 1987-06-04 1989-02-14 Motorola, Inc. Protection of energy information in sub-band coding
US4852179A (en) 1987-10-05 1989-07-25 Motorola, Inc. Variable frame rate, fixed bit rate vocoding method
JP2707564B2 (en) * 1987-12-14 1998-01-28 株式会社日立製作所 Audio coding method
US5285520A (en) * 1988-03-02 1994-02-08 Kokusai Denshin Denwa Kabushiki Kaisha Predictive coding apparatus
JPH0639229B2 (en) * 1988-08-29 1994-05-25 株式会社大井製作所 Power seat slide device
US5077798A (en) 1988-09-28 1991-12-31 Hitachi, Ltd. Method and system for voice coding based on vector quantization
US5086475A (en) 1988-11-19 1992-02-04 Sony Corporation Apparatus for generating, recording or reproducing sound source data
EP0500913B1 (en) 1990-09-19 1998-01-21 Koninklijke Philips Electronics N.V. System comprising a record carrier and a reading device
JP2779886B2 (en) 1992-10-05 1998-07-23 日本電信電話株式会社 Wideband audio signal restoration method
JP3191457B2 (en) 1992-10-31 2001-07-23 ソニー株式会社 High efficiency coding apparatus, noise spectrum changing apparatus and method
PL174314B1 (en) 1993-06-30 1998-07-31 Sony Corp Method of and apparatus for decoding digital signals
WO1995010760A2 (en) 1993-10-08 1995-04-20 Comsat Corporation Improved low bit rate vocoders and methods of operation therefor
US5684920A (en) 1994-03-17 1997-11-04 Nippon Telegraph And Telephone Acoustic signal transform coding method and decoding method having a high efficiency envelope flattening method therein
US5487087A (en) 1994-05-17 1996-01-23 Texas Instruments Incorporated Signal quantizer with reduced output fluctuation
US5797118A (en) * 1994-08-09 1998-08-18 Yamaha Corporation Learning vector quantization and a temporary memory such that the codebook contents are renewed when a first speaker returns
JP2770137B2 (en) * 1994-09-22 1998-06-25 日本プレシジョン・サーキッツ株式会社 Waveform data compression device
US5699477A (en) * 1994-11-09 1997-12-16 Texas Instruments Incorporated Mixed excitation linear prediction with fractional pitch
FI97182C (en) 1994-12-05 1996-10-25 Nokia Telecommunications Oy Procedure for replacing received bad speech frames in a digital receiver and receiver for a digital telecommunication system
JP3365113B2 (en) 1994-12-22 2003-01-08 ソニー株式会社 Audio level control device
DE69619284T3 (en) 1995-03-13 2006-04-27 Matsushita Electric Industrial Co., Ltd., Kadoma Device for expanding the voice bandwidth
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor
US6263307B1 (en) * 1995-04-19 2001-07-17 Texas Instruments Incorporated Adaptive weiner filtering using line spectral frequencies
JP3334419B2 (en) 1995-04-20 2002-10-15 ソニー株式会社 Noise reduction method and noise reduction device
US5699485A (en) 1995-06-07 1997-12-16 Lucent Technologies Inc. Pitch delay modification during frame erasures
US5704003A (en) * 1995-09-19 1997-12-30 Lucent Technologies Inc. RCELP coder
US6097824A (en) * 1997-06-06 2000-08-01 Audiologic, Incorporated Continuous frequency dynamic range audio compressor
JP3707116B2 (en) 1995-10-26 2005-10-19 ソニー株式会社 Speech decoding method and apparatus
US5737716A (en) 1995-12-26 1998-04-07 Motorola Method and apparatus for encoding speech using neural network technology for speech classification
US5689615A (en) 1996-01-22 1997-11-18 Rockwell International Corporation Usage of voice activity detection for efficient coding of speech
TW307960B (en) 1996-02-15 1997-06-11 Philips Electronics Nv Reduced complexity signal transmission system
EP0814458B1 (en) * 1996-06-19 2004-09-22 Texas Instruments Incorporated Improvements in or relating to speech coding
JP3246715B2 (en) 1996-07-01 2002-01-15 松下電器産業株式会社 Audio signal compression method and audio signal compression device
KR20030096444A (en) 1996-11-07 2003-12-31 마쯔시다덴기산교 가부시키가이샤 Excitation vector generator and method for generating an excitation vector
US6009395A (en) * 1997-01-02 1999-12-28 Texas Instruments Incorporated Synthesizer and method using scaled excitation signal
US6202046B1 (en) * 1997-01-23 2001-03-13 Kabushiki Kaisha Toshiba Background noise/speech classification method
US5890126A (en) 1997-03-10 1999-03-30 Euphonics, Incorporated Audio data decompression and interpolation apparatus and method
US6041297A (en) * 1997-03-10 2000-03-21 At&T Corp Vocoder for coding speech by using a correlation between spectral magnitudes and candidate excitations
US6385235B1 (en) 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
EP0878790A1 (en) 1997-05-15 1998-11-18 Hewlett-Packard Company Voice coding system and method
SE512719C2 (en) 1997-06-10 2000-05-02 Lars Gustaf Liljeryd A method and apparatus for reducing data flow based on harmonic bandwidth expansion
US6889185B1 (en) * 1997-08-28 2005-05-03 Texas Instruments Incorporated Quantization of linear prediction coefficients using perceptual weighting
US6122384A (en) 1997-09-02 2000-09-19 Qualcomm Inc. Noise suppression system and method
US6029125A (en) * 1997-09-02 2000-02-22 Telefonaktiebolaget L M Ericsson, (Publ) Reducing sparseness in coded speech signals
AU4661497A (en) 1997-09-30 1999-03-22 Qualcomm Incorporated Channel gain modification system and method for noise reduction in voice communication
JPH11205166A (en) 1998-01-19 1999-07-30 Mitsubishi Electric Corp Noise detector
US6301556B1 (en) * 1998-03-04 2001-10-09 Telefonaktiebolaget L M. Ericsson (Publ) Reducing sparseness in coded speech signals
WO1999065017A1 (en) * 1998-06-09 1999-12-16 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus and speech decoding apparatus
US6385573B1 (en) 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
US6449590B1 (en) * 1998-08-24 2002-09-10 Conexant Systems, Inc. Speech encoder using warping in long term preprocessing
JP4170458B2 (en) 1998-08-27 2008-10-22 ローランド株式会社 Time-axis compression / expansion device for waveform signals
US6353808B1 (en) * 1998-10-22 2002-03-05 Sony Corporation Apparatus and method for encoding a signal as well as apparatus and method for decoding a signal
KR20000047944A (en) 1998-12-11 2000-07-25 이데이 노부유끼 Receiving apparatus and method, and communicating apparatus and method
JP4354561B2 (en) 1999-01-08 2009-10-28 パナソニック株式会社 Audio signal encoding apparatus and decoding apparatus
US6223151B1 (en) * 1999-02-10 2001-04-24 Telefon Aktie Bolaget Lm Ericsson Method and apparatus for pre-processing speech signals prior to coding by transform-based speech coders
EP1126620B1 (en) 1999-05-14 2005-12-21 Matsushita Electric Industrial Co., Ltd. Method and apparatus for expanding band of audio signal
US6604070B1 (en) 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals
JP4792613B2 (en) 1999-09-29 2011-10-12 ソニー株式会社 Information processing apparatus and method, and recording medium
US6715125B1 (en) 1999-10-18 2004-03-30 Agere Systems Inc. Source coding and transmission with time diversity
WO2001037263A1 (en) 1999-11-16 2001-05-25 Koninklijke Philips Electronics N.V. Wideband audio transmission system
CA2290037A1 (en) * 1999-11-18 2001-05-18 Voiceage Corporation Gain-smoothing amplifier device and method in codecs for wideband speech and audio signals
US7260523B2 (en) 1999-12-21 2007-08-21 Texas Instruments Incorporated Sub-band speech coding system
US7167828B2 (en) * 2000-01-11 2007-01-23 Matsushita Electric Industrial Co., Ltd. Multimode speech coding apparatus and decoding apparatus
US6757395B1 (en) 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
US6704711B2 (en) 2000-01-28 2004-03-09 Telefonaktiebolaget Lm Ericsson (Publ) System and method for modifying speech signals
US6732070B1 (en) * 2000-02-16 2004-05-04 Nokia Mobile Phones, Ltd. Wideband speech codec using a higher sampling rate in analysis and synthesis filtering than in excitation searching
JP3681105B2 (en) 2000-02-24 2005-08-10 アルパイン株式会社 Data processing method
US6523003B1 (en) * 2000-03-28 2003-02-18 Tellabs Operations, Inc. Spectrally interdependent gain adjustment techniques
US6757654B1 (en) 2000-05-11 2004-06-29 Telefonaktiebolaget Lm Ericsson Forward error correction in speech coding
DE60118627T2 (en) 2000-05-22 2007-01-11 Texas Instruments Inc., Dallas Apparatus and method for broadband coding of speech signals
US7330814B2 (en) * 2000-05-22 2008-02-12 Texas Instruments Incorporated Wideband speech coding with modulated noise highband excitation system and method
JP2002055699A (en) 2000-08-10 2002-02-20 Mitsubishi Electric Corp Device and method for encoding voice
AU2001282098A1 (en) 2000-08-25 2002-03-04 Koninklijke Philips Electronics N.V. Method and apparatus for reducing the word length of a digital input signal and method and apparatus for recovering the digital input signal
US7386444B2 (en) * 2000-09-22 2008-06-10 Texas Instruments Incorporated Hybrid speech coding and system
US6947888B1 (en) 2000-10-17 2005-09-20 Qualcomm Incorporated Method and apparatus for high performance low bit-rate coding of unvoiced speech
JP2002202799A (en) * 2000-10-30 2002-07-19 Fujitsu Ltd Voice code conversion apparatus
JP3558031B2 (en) 2000-11-06 2004-08-25 日本電気株式会社 Speech decoding device
CN1216368C (en) * 2000-11-09 2005-08-24 皇家菲利浦电子有限公司 Wideband extension of telephone speech for higher perceptual quality
SE0004163D0 (en) 2000-11-14 2000-11-14 Coding Technologies Sweden Ab Enhancing perceptual performance or high frequency reconstruction coding methods by adaptive filtering
SE0004187D0 (en) 2000-11-15 2000-11-15 Coding Technologies Sweden Ab Enhancing the performance of coding systems that use high frequency reconstruction methods
US7230931B2 (en) 2001-01-19 2007-06-12 Raze Technologies, Inc. Wireless access system using selectively adaptable beam forming in TDD frames and method of operation
KR100910282B1 (en) 2000-11-30 2009-08-03 파나소닉 주식회사 Vector quantizing device for lpc parameters, decoding device for lpc parameters, recording medium, voice encoding device, voice decoding device, voice signal transmitting device, and voice signal receiving device
GB0031461D0 (en) 2000-12-22 2001-02-07 Thales Defence Ltd Communication sets
US20040204935A1 (en) * 2001-02-21 2004-10-14 Krishnasamy Anandakumar Adaptive voice playout in VOP
JP2002268698A (en) 2001-03-08 2002-09-20 Nec Corp Voice recognition device, device and method for standard pattern generation, and program
US20030028386A1 (en) * 2001-04-02 2003-02-06 Zinser Richard L. Compressed domain universal transcoder
WO2002093561A1 (en) 2001-05-11 2002-11-21 Siemens Aktiengesellschaft Method for enlarging the band width of a narrow-band filtered voice signal, especially a voice signal emitted by a telecommunication appliance
US7174135B2 (en) * 2001-06-28 2007-02-06 Koninklijke Philips Electronics N. V. Wideband signal transmission system
US6879955B2 (en) * 2001-06-29 2005-04-12 Microsoft Corporation Signal modification based on continuous time warping for low bit rate CELP coding
SE0202159D0 (en) * 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
JP2003036097A (en) 2001-07-25 2003-02-07 Sony Corp Device and method for detecting and retrieving information
TW525147B (en) 2001-09-28 2003-03-21 Inventec Besta Co Ltd Method of obtaining and decoding basic cycle of voice
US6895375B2 (en) * 2001-10-04 2005-05-17 At&T Corp. System for bandwidth extension of Narrow-band speech
US6988066B2 (en) * 2001-10-04 2006-01-17 At&T Corp. Method of bandwidth extension for narrow-band speech
TW526468B (en) 2001-10-19 2003-04-01 Chunghwa Telecom Co Ltd System and method for eliminating background noise of voice signal
JP4245288B2 (en) 2001-11-13 2009-03-25 パナソニック株式会社 Speech coding apparatus and speech decoding apparatus
US20030108108A1 (en) * 2001-11-15 2003-06-12 Takashi Katayama Decoder, decoding method, and program distribution medium therefor
EP1451812B1 (en) 2001-11-23 2006-06-21 Koninklijke Philips Electronics N.V. Audio signal bandwidth extension
CA2365203A1 (en) * 2001-12-14 2003-06-14 Voiceage Corporation A signal modification method for efficient coding of speech signals
US6751587B2 (en) * 2002-01-04 2004-06-15 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
JP4290917B2 (en) 2002-02-08 2009-07-08 株式会社エヌ・ティ・ティ・ドコモ Decoding device, encoding device, decoding method, and encoding method
JP3826813B2 (en) 2002-02-18 2006-09-27 ソニー株式会社 Digital signal processing apparatus and digital signal processing method
CA2469674C (en) * 2002-09-19 2012-04-24 Matsushita Electric Industrial Co., Ltd. Audio decoding apparatus and method
JP3756864B2 (en) 2002-09-30 2006-03-15 株式会社東芝 Speech synthesis method and apparatus and speech synthesis program
KR100841096B1 (en) * 2002-10-14 2008-06-25 리얼네트웍스아시아퍼시픽 주식회사 Preprocessing of digital audio data for mobile speech codecs
US20040098255A1 (en) * 2002-11-14 2004-05-20 France Telecom Generalized analysis-by-synthesis speech coding method, and coder implementing such method
US7242763B2 (en) * 2002-11-26 2007-07-10 Lucent Technologies Inc. Systems and methods for far-end noise reduction and near-end noise compensation in a mixed time-frequency domain compander to improve signal quality in communications systems
CA2415105A1 (en) * 2002-12-24 2004-06-24 Voiceage Corporation A method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding
KR100480341B1 (en) * 2003-03-13 2005-03-31 한국전자통신연구원 Apparatus for coding wide-band low bit rate speech signal
ATE368279T1 (en) * 2003-05-01 2007-08-15 Nokia Corp METHOD AND APPARATUS FOR QUANTIZING THE GAIN FACTOR IN A VARIABLE BIT RATE WIDEBAND VOICE ENCODER
WO2005004113A1 (en) 2003-06-30 2005-01-13 Fujitsu Limited Audio encoding device
FI118550B (en) 2003-07-14 2007-12-14 Nokia Corp Enhanced excitation for higher frequency band coding in a codec utilizing band splitting based coding methods
US7428490B2 (en) 2003-09-30 2008-09-23 Intel Corporation Method for spectral subtraction in speech enhancement
KR100587953B1 (en) * 2003-12-26 2006-06-08 한국전자통신연구원 Packet loss concealment apparatus for high-band in split-band wideband speech codec, and system for decoding bit-stream using the same
CA2454296A1 (en) * 2003-12-29 2005-06-29 Nokia Corporation Method and device for speech enhancement in the presence of background noise
JP4259401B2 (en) 2004-06-02 2009-04-30 カシオ計算機株式会社 Speech processing apparatus and speech coding method
US8000967B2 (en) 2005-03-09 2011-08-16 Telefonaktiebolaget Lm Ericsson (Publ) Low-complexity code excited linear prediction encoding
US8155965B2 (en) * 2005-03-11 2012-04-10 Qualcomm Incorporated Time warping frames inside the vocoder by modifying the residual
ES2636443T3 (en) * 2005-04-01 2017-10-05 Qualcomm Incorporated Systems, procedures and apparatus for broadband voice coding
CN101199004B (en) 2005-04-22 2011-11-09 高通股份有限公司 Systems, methods, and apparatus for gain factor smoothing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5455888A (en) * 1992-12-04 1995-10-03 Northern Telecom Limited Speech bandwidth extension method and apparatus
US20020052738A1 (en) * 2000-05-22 2002-05-02 Erdal Paksoy Wideband speech coding system and method
WO2002086867A1 (en) * 2001-04-23 2002-10-31 Telefonaktiebolaget L M Ericsson (Publ) Bandwidth extension of acousic signals
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BRUNO BESSETTE ET AL: "The Adaptive Multirate WidebandSpeech Codec (AMR-WB)", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 10, no. 8, November 2002 (2002-11-01), XP011079675, ISSN: 1063-6676 *
MAKINEN J ET AL: "The effect of source based rate adaptation extension in amr-wb speech codec", SPEECH CODING, 2002, IEEE WORKSHOP PROCEEDINGS. OCT. 6-9, 2002, PISCATAWAY, NJ, USA,IEEE, 6 October 2002 (2002-10-06), pages 153 - 155, XP010647244, ISBN: 0-7803-7549-1 *
NILSSON M ET AL: "Avoiding over-estimation in bandwidth extension of telephony speech", 2001 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PROCEEDINGS. (ICASSP). SALT LAKE CITY, UT, MAY 7 - 11, 2001, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), NEW YORK, NY : IEEE, US, vol. VOL. 1 OF 6, 7 May 2001 (2001-05-07), pages 869 - 872, XP010803743, ISBN: 0-7803-7041-4 *

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