JP4556875B2 - 音声信号分離装置及び方法 - Google Patents
音声信号分離装置及び方法 Download PDFInfo
- Publication number
- JP4556875B2 JP4556875B2 JP2006010277A JP2006010277A JP4556875B2 JP 4556875 B2 JP4556875 B2 JP 4556875B2 JP 2006010277 A JP2006010277 A JP 2006010277A JP 2006010277 A JP2006010277 A JP 2006010277A JP 4556875 B2 JP4556875 B2 JP 4556875B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- separation
- time
- matrix
- frequency domain
- 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 - Fee Related
Links
- 238000000926 separation method Methods 0.000 title claims description 176
- 230000005236 sound signal Effects 0.000 title claims description 28
- 238000000034 method Methods 0.000 title description 59
- 239000011159 matrix material Substances 0.000 claims description 104
- 238000012880 independent component analysis Methods 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000006870 function Effects 0.000 description 67
- 230000008569 process Effects 0.000 description 21
- 239000013598 vector Substances 0.000 description 15
- 230000014509 gene expression Effects 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 8
- 238000012805 post-processing Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009795 derivation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000000513 principal component analysis Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques 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
- G10L21/0272—Voice signal separating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/04—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/04—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense
- A61F11/045—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense using mechanical stimulation of nerves
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Acoustics & Sound (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- General Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Otolaryngology (AREA)
- Psychology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Physiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Biophysics (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Circuit For Audible Band Transducer (AREA)
- Complex Calculations (AREA)
- Auxiliary Devices For Music (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Description
i) 返値が無次元量
ii) 返値の位相(複素数の位相)がω番目の引数Yk(ω,t)の位相と逆位相
iii)x≧0においてg(x)≧0
iv) x≧0において、g(x)は定数、単調増加関数、又は単調減少関数
v) g(x)が単調増加又は単調減少である場合、x→∞においてg(x)は正の値に収束する
vi) g(x)はxに対して無次元量
vii) f(Yk(t))とg(Yk(ω,t))との積は非負の実数
viii)f(Yk(t))とg(Yk(ω,t))との積の次元は[1/x]
(Yk(ω,t)の単位を[x]とする)
(a)複数の分離信号のそれぞれについて、尖度などを用いて最も「音声らしい」チャンネルを1つ特定し、その分離信号を音声認識に用いる。
(b)複数の分離信号を複数の音声認識装置に並列に入力して音声認識を行い、認識結果毎に尤度や信頼度などの尺度を計算し、最も尺度の高い認識結果を採用する。
Claims (4)
- 音声信号を含む複数の信号が混合された複数チャンネルの時間領域の観測信号を独立成分分析を用いて信号毎に分離し、複数チャンネルの分離信号を生成する音声信号分離装置において、
上記時間領域の観測信号を時間周波数領域の観測信号に変換する第1の変換手段と、
上記時間周波数領域の観測信号をチャンネル間で無相関化する無相関化手段と、
上記時間周波数領域の観測信号から正規直交制約付きの分離処理を行うことにより時間周波数領域の分離信号を生成する分離手段と、
上記時間周波数領域の分離信号を時間領域の分離信号に変換する第2の変換手段とを有し、
上記分離手段は、上記時間周波数領域の観測信号と正規直交行列の初期値が代入された分離行列とから時間周波数領域の分離信号を生成し、この時間周波数領域の分離信号と多次元確率密度関数を用いたスコア関数と上記分離行列とを用いて正規直交制約を満たすように該分離行列の修正値を計算し、上記修正値を用いて、上記分離行列が略々収束するまで該分離行列を修正し、略々収束した正規直交行列の分離行列を用いて上記時間周波数領域の分離信号を生成し、
生成された分離信号をリスケーリング処理して上記第2の変換手段で時間領域の分離信号に変換する
音声信号分離装置。 - 上記スコア関数は、返値が無次元量であり、且つ、返値の位相が1つの引数にのみ依存する請求項1記載の音声信号分離装置。
- 音声信号を含む複数の信号が混合された複数チャンネルの時間領域の観測信号を独立成分分析を用いて信号毎に分離し、複数チャンネルの分離信号を生成する音声信号分離方法において、
上記時間領域の観測信号を時間周波数領域の観測信号に変換する工程と、
上記時間周波数領域の観測信号をチャンネル間で無相関化する工程と、
上記時間周波数領域の観測信号と正規直交行列の初期値が代入された分離行列とから正規直交制約付きの分離処理を行うことにより時間周波数領域の分離信号を生成する工程と、
この時間周波数領域の分離信号と多次元確率密度関数を用いたスコア関数と上記正規直交行列の分離行列とを用いて正規直交制約を満たすように該分離行列の修正値を計算する工程と、
上記修正値を用いて、上記分離行列が略々収束するまで該分離行列を修正する工程と、
略々収束した分離行列を用いて生成された時間周波数領域の分離信号をリスケーリング処理する工程と、
リスケーリングされた時間周波数領域の分離信号を時間領域の分離信号に変換する工程とを有する
音声信号分離方法。 - 上記スコア関数は、返値が無次元量であり、且つ、返値の位相が1つの引数にのみ依存する請求項3記載の音声信号分離方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006010277A JP4556875B2 (ja) | 2006-01-18 | 2006-01-18 | 音声信号分離装置及び方法 |
US11/653,235 US7797153B2 (en) | 2006-01-18 | 2007-01-16 | Speech signal separation apparatus and method |
KR1020070005193A KR20070076526A (ko) | 2006-01-18 | 2007-01-17 | 음성 신호 분리 장치 및 방법 |
CNB2007101266765A CN100559472C (zh) | 2006-01-18 | 2007-01-18 | 语音信号分离设备和方法 |
EP07100711A EP1811498A1 (en) | 2006-01-18 | 2007-01-18 | Speech signal separation apparatus and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006010277A JP4556875B2 (ja) | 2006-01-18 | 2006-01-18 | 音声信号分離装置及び方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007193035A JP2007193035A (ja) | 2007-08-02 |
JP4556875B2 true JP4556875B2 (ja) | 2010-10-06 |
Family
ID=37891937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006010277A Expired - Fee Related JP4556875B2 (ja) | 2006-01-18 | 2006-01-18 | 音声信号分離装置及び方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7797153B2 (ja) |
EP (1) | EP1811498A1 (ja) |
JP (1) | JP4556875B2 (ja) |
KR (1) | KR20070076526A (ja) |
CN (1) | CN100559472C (ja) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4449871B2 (ja) | 2005-01-26 | 2010-04-14 | ソニー株式会社 | 音声信号分離装置及び方法 |
US7970564B2 (en) * | 2006-05-02 | 2011-06-28 | Qualcomm Incorporated | Enhancement techniques for blind source separation (BSS) |
JP5018193B2 (ja) * | 2007-04-06 | 2012-09-05 | ヤマハ株式会社 | 雑音抑圧装置およびプログラム |
US7987090B2 (en) * | 2007-08-09 | 2011-07-26 | Honda Motor Co., Ltd. | Sound-source separation system |
US8954324B2 (en) | 2007-09-28 | 2015-02-10 | Qualcomm Incorporated | Multiple microphone voice activity detector |
US8175871B2 (en) | 2007-09-28 | 2012-05-08 | Qualcomm Incorporated | Apparatus and method of noise and echo reduction in multiple microphone audio systems |
US8223988B2 (en) | 2008-01-29 | 2012-07-17 | Qualcomm Incorporated | Enhanced blind source separation algorithm for highly correlated mixtures |
JP5294300B2 (ja) * | 2008-03-05 | 2013-09-18 | 国立大学法人 東京大学 | 音信号の分離方法 |
JP4572945B2 (ja) | 2008-03-28 | 2010-11-04 | ソニー株式会社 | ヘッドフォン装置、信号処理装置、信号処理方法 |
WO2009151578A2 (en) * | 2008-06-09 | 2009-12-17 | The Board Of Trustees Of The University Of Illinois | Method and apparatus for blind signal recovery in noisy, reverberant environments |
JP5195652B2 (ja) * | 2008-06-11 | 2013-05-08 | ソニー株式会社 | 信号処理装置、および信号処理方法、並びにプログラム |
JP4631939B2 (ja) | 2008-06-27 | 2011-02-16 | ソニー株式会社 | ノイズ低減音声再生装置およびノイズ低減音声再生方法 |
US20110112843A1 (en) * | 2008-07-11 | 2011-05-12 | Nec Corporation | Signal analyzing device, signal control device, and method and program therefor |
JP5277887B2 (ja) * | 2008-11-14 | 2013-08-28 | ヤマハ株式会社 | 信号処理装置およびプログラム |
JP5550456B2 (ja) * | 2009-06-04 | 2014-07-16 | 本田技研工業株式会社 | 残響抑圧装置、及び残響抑圧方法 |
JP5375400B2 (ja) * | 2009-07-22 | 2013-12-25 | ソニー株式会社 | 音声処理装置、音声処理方法およびプログラム |
KR101225932B1 (ko) | 2009-08-28 | 2013-01-24 | 포항공과대학교 산학협력단 | 음악 음원 분리 방법 및 장치 |
US8340943B2 (en) * | 2009-08-28 | 2012-12-25 | Electronics And Telecommunications Research Institute | Method and system for separating musical sound source |
KR101272972B1 (ko) | 2009-09-14 | 2013-06-10 | 한국전자통신연구원 | 음원 데이터베이스를 사용하지 않는 음악 음원 분리 방법 및 장치 |
JP2011107603A (ja) * | 2009-11-20 | 2011-06-02 | Sony Corp | 音声認識装置、および音声認識方法、並びにプログラム |
JP2011215317A (ja) * | 2010-03-31 | 2011-10-27 | Sony Corp | 信号処理装置、および信号処理方法、並びにプログラム |
JP5307770B2 (ja) * | 2010-07-09 | 2013-10-02 | シャープ株式会社 | 音声信号処理装置、方法、プログラム、及び記録媒体 |
KR20120031854A (ko) * | 2010-09-27 | 2012-04-04 | 한국전자통신연구원 | 시간 및 주파수 특징을 이용하는 음악 음원 분리 장치 및 방법 |
US20120095729A1 (en) * | 2010-10-14 | 2012-04-19 | Electronics And Telecommunications Research Institute | Known information compression apparatus and method for separating sound source |
US9111526B2 (en) | 2010-10-25 | 2015-08-18 | Qualcomm Incorporated | Systems, method, apparatus, and computer-readable media for decomposition of a multichannel music signal |
CN102081928B (zh) * | 2010-11-24 | 2013-03-06 | 南京邮电大学 | 基于压缩感知和k-svd的单通道混合语音分离方法 |
CN102903368B (zh) | 2011-07-29 | 2017-04-12 | 杜比实验室特许公司 | 用于卷积盲源分离的方法和设备 |
US8886526B2 (en) | 2012-05-04 | 2014-11-11 | Sony Computer Entertainment Inc. | Source separation using independent component analysis with mixed multi-variate probability density function |
US20130294611A1 (en) * | 2012-05-04 | 2013-11-07 | Sony Computer Entertainment Inc. | Source separation by independent component analysis in conjuction with optimization of acoustic echo cancellation |
US9099096B2 (en) | 2012-05-04 | 2015-08-04 | Sony Computer Entertainment Inc. | Source separation by independent component analysis with moving constraint |
US8880395B2 (en) | 2012-05-04 | 2014-11-04 | Sony Computer Entertainment Inc. | Source separation by independent component analysis in conjunction with source direction information |
CN102708860B (zh) * | 2012-06-27 | 2014-04-23 | 昆明信诺莱伯科技有限公司 | 一种基于声信号识别鸟类种类的判断标准建立方法 |
KR101474321B1 (ko) * | 2012-06-29 | 2014-12-30 | 한국과학기술원 | 암묵신호 분리에서의 순열/비례 문제 해결장치 및 그 방법 |
JP2014219467A (ja) * | 2013-05-02 | 2014-11-20 | ソニー株式会社 | 音信号処理装置、および音信号処理方法、並びにプログラム |
EP3165007B1 (en) * | 2014-07-03 | 2018-04-25 | Dolby Laboratories Licensing Corporation | Auxiliary augmentation of soundfields |
CN106055903B (zh) * | 2016-06-02 | 2017-11-03 | 东南大学 | 基于分段常函数正交基的随机动态载荷分解技术 |
CN110232931B (zh) * | 2019-06-18 | 2022-03-22 | 广州酷狗计算机科技有限公司 | 音频信号的处理方法、装置、计算设备及存储介质 |
GB2609605B (en) * | 2021-07-16 | 2024-04-17 | Sony Interactive Entertainment Europe Ltd | Audio generation methods and systems |
GB2609021B (en) * | 2021-07-16 | 2024-04-17 | Sony Interactive Entertainment Europe Ltd | Audio generation methods and systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004302122A (ja) * | 2003-03-31 | 2004-10-28 | Nippon Telegr & Teleph Corp <Ntt> | 目的信号抽出方法及びその装置、目的信号抽出プログラム及びその記録媒体 |
JP2005091732A (ja) * | 2003-09-17 | 2005-04-07 | Univ Kinki | ブラインド信号分離で求めた分割スペクトルの振幅分布の形状に基づく目的音声の復元方法 |
JP2006238409A (ja) * | 2005-01-26 | 2006-09-07 | Sony Corp | 音声信号分離装置及び方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5959966A (en) * | 1997-06-02 | 1999-09-28 | Motorola, Inc. | Methods and apparatus for blind separation of radio signals |
US7047043B2 (en) * | 2002-06-06 | 2006-05-16 | Research In Motion Limited | Multi-channel demodulation with blind digital beamforming |
JP3975153B2 (ja) | 2002-10-28 | 2007-09-12 | 日本電信電話株式会社 | ブラインド信号分離方法及び装置、ブラインド信号分離プログラム並びにそのプログラムを記録した記録媒体 |
JP4496378B2 (ja) | 2003-09-05 | 2010-07-07 | 財団法人北九州産業学術推進機構 | 定常雑音下における音声区間検出に基づく目的音声の復元方法 |
-
2006
- 2006-01-18 JP JP2006010277A patent/JP4556875B2/ja not_active Expired - Fee Related
-
2007
- 2007-01-16 US US11/653,235 patent/US7797153B2/en not_active Expired - Fee Related
- 2007-01-17 KR KR1020070005193A patent/KR20070076526A/ko not_active Application Discontinuation
- 2007-01-18 EP EP07100711A patent/EP1811498A1/en not_active Withdrawn
- 2007-01-18 CN CNB2007101266765A patent/CN100559472C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004302122A (ja) * | 2003-03-31 | 2004-10-28 | Nippon Telegr & Teleph Corp <Ntt> | 目的信号抽出方法及びその装置、目的信号抽出プログラム及びその記録媒体 |
JP2005091732A (ja) * | 2003-09-17 | 2005-04-07 | Univ Kinki | ブラインド信号分離で求めた分割スペクトルの振幅分布の形状に基づく目的音声の復元方法 |
JP2006238409A (ja) * | 2005-01-26 | 2006-09-07 | Sony Corp | 音声信号分離装置及び方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070185705A1 (en) | 2007-08-09 |
EP1811498A1 (en) | 2007-07-25 |
KR20070076526A (ko) | 2007-07-24 |
CN100559472C (zh) | 2009-11-11 |
US7797153B2 (en) | 2010-09-14 |
CN101086846A (zh) | 2007-12-12 |
JP2007193035A (ja) | 2007-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4556875B2 (ja) | 音声信号分離装置及び方法 | |
JP4449871B2 (ja) | 音声信号分離装置及び方法 | |
US7895038B2 (en) | Signal enhancement via noise reduction for speech recognition | |
US9668066B1 (en) | Blind source separation systems | |
Kim et al. | Independent vector analysis: Definition and algorithms | |
Jang et al. | A maximum likelihood approach to single-channel source separation | |
JP4403436B2 (ja) | 信号分離装置、および信号分離方法、並びにコンピュータ・プログラム | |
JP2011215317A (ja) | 信号処理装置、および信号処理方法、並びにプログラム | |
WO2020039571A1 (ja) | 音声分離装置、音声分離方法、音声分離プログラム、及び音声分離システム | |
Simon et al. | A general framework for online audio source separation | |
Nesta et al. | Robust Automatic Speech Recognition through On-line Semi Blind Signal Extraction | |
WO2021193093A1 (ja) | 信号処理装置、信号処理方法およびプログラム | |
JP6448567B2 (ja) | 音響信号解析装置、音響信号解析方法、及びプログラム | |
JP7046636B2 (ja) | 信号解析装置、方法、及びプログラム | |
JP4946330B2 (ja) | 信号分離装置及び方法 | |
Kamo et al. | Regularized fast multichannel nonnegative matrix factorization with ILRMA-based prior distribution of joint-diagonalization process | |
WO2022190615A1 (ja) | 信号処理装置および方法、並びにプログラム | |
Ozerov et al. | Gaussian model based multichannel separation | |
Chung et al. | A supervised multi-channel speech enhancement algorithm based on bayesian nmf model | |
Sekiguchi | A Unified Statistical Approach to Fast and Robust Multichannel Speech Separation and Dereverberation | |
KR100863184B1 (ko) | 간섭 및 반향신호 제거를 위한 다단계 암묵 디콘볼루션방법 | |
Izumi et al. | Multichannel NMF with Reduced Computational Complexity for Speech Recognition | |
Wang et al. | Independent low-rank matrix analysis based on the Sinkhorn divergence source model for blind source separation | |
Paul et al. | Hybrid solution to single-channel hybrid noisy speech for an industrial environment | |
CN116997961A (zh) | 信息处理装置、输出方法和输出程序 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091125 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A132 Effective date: 20100105 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100308 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100629 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100712 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130730 Year of fee payment: 3 |
|
LAPS | Cancellation because of no payment of annual fees |