KR20060112618A - 이득 조절값의 계산 장치 및 방법 그리고 신호의 에너지평가 장치 및 방법 - Google Patents
이득 조절값의 계산 장치 및 방법 그리고 신호의 에너지평가 장치 및 방법 Download PDFInfo
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Abstract
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Claims (24)
- 부대역 필터들을 가지며 그 인접 부대역 필터들이 중첩 범위에서 중첩하는 전이 대역을 갖는 분석 필터뱅크를 사용하여 하나의 신호를 필터링함으로써 발생된 복수의 부대역 신호들을 이득 조절하기 위한 이득 조절값을 계산하기 위한 것으로서,검사의 포지티브 결과(positive result)에 대한 응답으로 피집단화 부대역 신호들(grouped subband signals)을 얻기 위해 부대역 신호와 그 인접 부대역 신호가 중첩 범위에서 앨리어싱 발생 신호 성분(aliasing generating signal components)을 가지는가의 여부를 결정하기 위하여, 하나의 부대역 필터로부터 유래하는 하나의 부대역 신호와 하나의 인접 부대역 필터로부터 유래하는 하나의 인접 부대역 신호를 검사하기 위한 수단(82)과;피집단화 부대역 신호들에 대한 기준 에너지(a reference energy)의 표시와 피집단화 인접 부대역 신호들의 에너지에 대한 에너지 예상값(an energy estimate)을 결정하고, 그리고상기 기준 에너지의 표시와 에너지 예상값에 기초하여 피집단화 부대역 신호들에 대한 이득 조절값들을 계산하는 동작을 하는,피집단화 조절 부대역 신호들에 대한 제 1 이득 조절값과 제 2 이득 조절값을 계산하기 위한 수단(84)을 포함하여 구성되는, 이득 조절값의 계산 장치.
- 제1항에 있어서, 상기 부대역 신호를 위한 제 1 기준 스펙트럼 포락선 값(a first reference spectral envelope value)과 그 인접 부대역 신호(110)를 위한 제 2 기준 스펙트럼 포락선 값을 제공하기 위한 수단을 더 포함하여 구성되고;상기 계산 수단(84)이, 피집단화 부대역 신호들에 대해, 상기 부대역 신호의 신호 에너지를 표시하는 제 1 에너지 크기(a first energy measure)와 그 인접 부대역 신호의 신호 에너지를 표시하는 제 2 에너지 크기를 결정하는(112) 동작을 하며; 그리고상기 계산 수단(84)이, 제 1 기준 스펙트럼 포락선 값(a first reference spectral envelope value)과 제 2 기준 스펙트럼 포락선 값의 선형 결합(linear combination)으로 기준 에너지의 표시를 계산하고, 상기 제 1 에너지 크기와 제 2 에너지 크기의 선형 결합(linear combination)으로 피집단화 인접 부대역 신호들의 에너지에 대한 에너지 예상값(energy estimate)을 계산하는(114) 동작을 하는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 계산 수단(84)이, 상기 제 1 및 제 2 이득 조절 값이 미리 결정된 임계값보다 작게 차이가 있거나 서로 동일하도록, 상기 제 1 및 제 2 이득 조절 값을 계산하는 동작을 하는, 이득 조절값의 계산 장치.
- 제3항에 있어서, 미리 결정된 임계값이, 6 dB보다 낮거나 이와 동일한, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 부대역 신호를 위한 불변경 제 1 이득 조절 값(an unmodified first gain adjustment value)과 그 인접 부대역 신호를 위한 불변경 제 2 이득 조절 값을 제공하기 위한 수단을 더 포함하여 구성되고, 그리고상기 계산 수단(84)이, 상기 제 1 및 제 2 이득 조절 값이 상기 불변경 제 1 및 제 2 이득 조절 값의 하위값(lower value) 보다 크거나 동일하도록 그리고 상기 불변경 제 1 및 제 2 이득 조절 값의 상위값(higher value) 보다 작거나 동일하게 계산하는 동작을 하는, 이득 조절값의 계산 장치.
- 제5항에 있어서, 상기 불변경 제 1, 제 2 이득 조절 값이, 하나의 주파수 대역에 원 신호(original signal)의 스펙트럼 포락선을 표시하고(are indicative for), 상기 주파수 대역이 스펙트럼 대역 복제(spectral band replication)에 의해 재구성되는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 계산 수단(84)이, 상기 부대역 신호와 그 인접 부대역 신호의 평균 에너지에 기초하여 상기 제 1 이득 조절 값과 제 2 이득 조절 값을 계산하는 동작을 하는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 계산 수단이, 다음의 식에 따른 제 1 및 제 2 이득 조절 팩터들을 계산하는 동작을 하는, 이득 조절값의 계산 장치.(위에서, gk-1(m)은 피집단화 부대역 신호들의 제 1 부대역 신호에 대한 이득 조절 팩터이고, gk(m)은 피집단화 부대역 신호들의 제 2 부대역 신호에 대한 이득 조절 팩터이며, Ek-1 ref(m)은 제 1 부대역 신호에 대한 기준 에너지이고, Ek ref(m)은 제 2 부대역 신호에 대한 기준 에너지이며, Ek-1(m)은 제 1 부대역 신호의 에너지 예상값이고, Ek(m)은 제 2 부대역 신호의 에너지 예상값이며, m은 시간의 한 순간(point)을 나타냄.)
- 상기 청구항들 중의 하나에 있어서, 하나의 부대역 신호에 대한 에너지 예상값이 그 부대역 신호의 제곱된 부대역 샘플(squared subband samples)의 합산에 의해 계산되는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 검사 수단(82)이, 상기 부대역 신호와 그 인접 부대역 신호(100, 102)를 위한 예측 다항식(prediction polynomials)의 계수(coefficients)에 기초하여 부대역 신호들의 부호들을 계산하고, 상기 부호들 이 서로 미리 결정된 관계를 가질 때 포지티브 결과를 표시하는(104) 동작을 하는, 이득 조절값의 계산 장치.
- 제10항에 있어서, 상기 검사 수단(82)이, 자동-상관 방법(auto-correlation method) 또는 공분산 방법(co-variance method)을 적용하는 동작을 하는, 이득 조절값의 계산 장치.
- 제10항 또는 제11항에 있어서, 상기 예측 다항식이 1차 계수(a first order coefficient)를 가지는 하위(a low order) 다항식이고, 상기 하위 다항식의 차수(order)가 4보다 작고, 상기 검사 수단(82)이 상기 부대역 신호들의 부호들을 계산하기 위해 1차 계수를 사용하는 동작을 하는, 이득 조절값의 계산 장치.
- 제10항 내지 제13항들 중의 어느 하나에 있어서, 상기 미리 결정된 관계가, 그와 결합된 상기 채널 넘버(k)를 가지는 상기 부대역 신호가 제 1 부호를 가지고, 그와 결합된 상기 채널 넘버(k-1)를 가지는 그 인접 부대역 신호가 상기 제 1 부호와 정반대인 제 2 부호를 가지도록 정의되는, 이득 조절값의 계산 장치.
- 제14항에 있어서, 상기 제 1 부호가 네가티브이고, 상기 제 2 부호가 포지티브인, 이득 조절값의 계산 장치.
- 제1항에 있어서, 상기 검사 수단(82)이, 하나의 음조 성분이 음조 임계값(tonality threshold) 이상의 음조 크기(tonality measure)를 가지는지를 결정하기 위하여 상기 부대역 신호와 그 인접 부대역 신호의 음조 분석(tonal analysis)을 수행하는 동작을 하는, 이득 조절값의 계산 장치.
- 제16항에 있어서, 상기 검사 수단(82)이, 상기 음조 성분이 상기 채널(k)과 채널(k-1)의 중첩 범위에 있는지의 여부를 결정하는 동작을 하는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 합성 출력 신호를 얻기 위하여 상기 이득 조절 부대역 신호들(gain adjusted subband signals)을 필터링(filtering)하기 위한 하나의 합성 필터뱅크(synthesis filterbank)(90)를 더 포함하여 구성되는, 이득 조절값의 계산 장치.
- 상기 청구항들 중의 하나에 있어서, 상기 분석 필터뱅크가 실수값 필터뱅크이고; 그리고 상기 합성 필터뱅크가 실수값 필터뱅크인, 이득 조절값의 계산 장치.
- 제1항 내지 제18항들 중의 어느 하나에 있어서, 상기 분석 필터뱅크가 복소수값 필터뱅크(complex-valued filterbank)이고; 그리고 상기 합성 필터뱅크가 실수값 필터뱅크인, 이득 조절값의 계산 장치.
- 부대역 필터들을 가지며 그 인접 부대역 필터들이 중첩 범위에서 중첩하는 전이 대역을 갖는 분석 필터뱅크를 사용하여 하나의 신호를 필터링함으로써 발생된 복수의 부대역 신호들을 이득 조절하기 위한 이득 조절값을 계산하기 위한 것으로서,검사의 포지티브 결과(positive result)에 대한 응답으로 피집단화 부대역 신호들(grouped subband signals)을 얻기 위해 부대역 신호와 그 인접 부대역 신호가 중첩 범위에서 앨리어싱 발생 신호 성분(aliasing generating signal components)을 가지는가의 여부를 결정하기 위하여, 하나의 부대역 필터로부터 유래하는 하나의 부대역 신호와 인접 부대역 필터로부터 유래하는 인접 부대역 신호를 검사하는 단계(82)와;피집단화 부대역 신호들에 대한 기준 에너지(a reference energy)의 표시와 피집단화 인접 부대역 신호들의 에너지에 대한 에너지 예상값(an energy estimate)을 결정함으로써, 그리고상기 기준 에너지의 표시와 에너지 예상값에 기초하여 피집단화 부대역 신호들에 대한 이득 조절값을 계산함으로써,피집단화 조절 부대역 신호들에 대한 제 1 이득 조절값과 제 2 이득 조절값을 계산하는 단계(84)를 포함하여 구성되는, 이득 조절값의 계산 방법.
- 부대역 필터들을 가지며 그 인접 부대역 필터들이 중첩 범위에서 중첩하는 전이 대역을 갖는 분석 필터뱅크를 사용하여 필터링함으로써 발생된 부대역 신호들을 가지는 신호의 에너지를 평가하기 위한 것으로서,검사의 포지티브 결과(positive result)에 대한 응답으로 피집단화 부대역 신호들을 얻기 위해 부대역 신호와 그 인접 부대역 신호가 중첩 범위에서 앨리어싱 발생 신호 성분을 가지는가의 여부를 결정하기 위하여, 하나의 부대역 필터로부터 유래하는 하나의 부대역 신호와 하나의 인접 부대역 필터로부터 유래하는 하나의 인접 부대역 신호를 검사하기 위한 수단(82)과; 그리고피집단화 인접 부대역 신호들의 에너지에 대한 에너지 예상값을 계산하기 위한 수단을 포함하여 구성되는, 신호의 에너지 평가 장치.
- 부대역 필터들을 가지며 그 인접 부대역 필터들이 중첩 범위에서 중첩하는 전이 대역을 갖는 분석 필터뱅크를 사용하여 필터링함으로써 발생된 부대역 신호들을 가지는 신호의 에너지를 평가하기 위한 것으로서,검사의 포지티브 결과(positive result)에 대한 응답으로 피집단화 부대역 신호들을 얻기 위해 부대역 신호와 그 인접 부대역 신호가 중첩 범위에서 앨리어싱 발생 신호 성분을 가지는가의 여부를 결정하기 위하여, 하나의 부대역 필터로부터 유래하는 하나의 부대역 신호와 하나의 인접 부대역 필터로부터 유래하는 하나의 인접 부대역 신호를 검사하는 단계(82)와; 그리고피집단화 인접 부대역 신호들의 에너지에 대한 에너지 예상값을 계산하는 단계를 포함하여 구성되는, 신호의 에너지 평가 방법.
- 컴퓨터에서 가동될 때, 제21항 또는 제23항에 따른 방법을 수행하기 위한 하나의 프로그램 코드를 가지는 컴퓨터 프로그램이 저장된 컴퓨터 프로그램 저장 매체.
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Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8605911B2 (en) | 2001-07-10 | 2013-12-10 | Dolby International Ab | Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
SE0202159D0 (sv) | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
AU2002352182A1 (en) | 2001-11-29 | 2003-06-10 | Coding Technologies Ab | Methods for improving high frequency reconstruction |
SE0202770D0 (sv) | 2002-09-18 | 2002-09-18 | Coding Technologies Sweden Ab | Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks |
US8417515B2 (en) * | 2004-05-14 | 2013-04-09 | Panasonic Corporation | Encoding device, decoding device, and method thereof |
US7558389B2 (en) * | 2004-10-01 | 2009-07-07 | At&T Intellectual Property Ii, L.P. | Method and system of generating a speech signal with overlayed random frequency signal |
FR2888699A1 (fr) * | 2005-07-13 | 2007-01-19 | France Telecom | Dispositif de codage/decodage hierachique |
JP4876574B2 (ja) | 2005-12-26 | 2012-02-15 | ソニー株式会社 | 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体 |
US7590523B2 (en) * | 2006-03-20 | 2009-09-15 | Mindspeed Technologies, Inc. | Speech post-processing using MDCT coefficients |
DE102006047197B3 (de) | 2006-07-31 | 2008-01-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Verarbeiten eines reellen Subband-Signals zur Reduktion von Aliasing-Effekten |
US20080208575A1 (en) * | 2007-02-27 | 2008-08-28 | Nokia Corporation | Split-band encoding and decoding of an audio signal |
DE102008058496B4 (de) * | 2008-11-21 | 2010-09-09 | Siemens Medical Instruments Pte. Ltd. | Filterbanksystem mit spezifischen Sperrdämpfungsanteilen für eine Hörvorrichtung |
TWI716833B (zh) * | 2009-02-18 | 2021-01-21 | 瑞典商杜比國際公司 | 用於高頻重建或參數立體聲之複指數調變濾波器組 |
TWI597938B (zh) | 2009-02-18 | 2017-09-01 | 杜比國際公司 | 低延遲調變濾波器組 |
KR101367604B1 (ko) | 2009-03-17 | 2014-02-26 | 돌비 인터네셔널 에이비 | 적응형으로 선택가능한 좌/우 또는 미드/사이드 스테레오 코딩과 파라메트릭 스테레오 코딩의 조합에 기초한 진보된 스테레오 코딩 |
TWI643187B (zh) | 2009-05-27 | 2018-12-01 | 瑞典商杜比國際公司 | 從訊號的低頻成份產生該訊號之高頻成份的系統與方法,及其機上盒、電腦程式產品、軟體程式及儲存媒體 |
US11657788B2 (en) | 2009-05-27 | 2023-05-23 | Dolby International Ab | Efficient combined harmonic transposition |
JP5754899B2 (ja) | 2009-10-07 | 2015-07-29 | ソニー株式会社 | 復号装置および方法、並びにプログラム |
JP5771618B2 (ja) | 2009-10-19 | 2015-09-02 | ドルビー・インターナショナル・アーベー | 音声オブジェクトの区分を示すメタデータ時間標識情報 |
WO2011110496A1 (en) | 2010-03-09 | 2011-09-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for handling transient sound events in audio signals when changing the replay speed or pitch |
CN103038819B (zh) | 2010-03-09 | 2015-02-18 | 弗兰霍菲尔运输应用研究公司 | 用以使用补丁边界对准处理输入音频信号的装置及方法 |
ES2655085T3 (es) | 2010-03-09 | 2018-02-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Respuesta de magnitud y alineamiento temporal mejorado en la extensión de ancho de banda basado en un vocodificador de fase para señales de audio |
JP5850216B2 (ja) | 2010-04-13 | 2016-02-03 | ソニー株式会社 | 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム |
JP5609737B2 (ja) | 2010-04-13 | 2014-10-22 | ソニー株式会社 | 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム |
CN102947882B (zh) * | 2010-04-16 | 2015-06-17 | 弗劳恩霍夫应用研究促进协会 | 使用制导带宽扩展和盲带宽扩展生成宽带信号的装置、方法 |
US8665321B2 (en) * | 2010-06-08 | 2014-03-04 | Lg Electronics Inc. | Image display apparatus and method for operating the same |
KR101679570B1 (ko) * | 2010-09-17 | 2016-11-25 | 엘지전자 주식회사 | 영상표시장치 및 그 동작방법 |
JP6075743B2 (ja) * | 2010-08-03 | 2017-02-08 | ソニー株式会社 | 信号処理装置および方法、並びにプログラム |
JP5707842B2 (ja) | 2010-10-15 | 2015-04-30 | ソニー株式会社 | 符号化装置および方法、復号装置および方法、並びにプログラム |
GB2484969B (en) * | 2010-10-29 | 2013-11-20 | Canon Kk | Improved reference frame for video encoding and decoding |
AU2011358654B2 (en) | 2011-02-09 | 2017-01-05 | Telefonaktiebolaget L M Ericsson (Publ) | Efficient encoding/decoding of audio signals |
CN105225669B (zh) * | 2011-03-04 | 2018-12-21 | 瑞典爱立信有限公司 | 音频编码中的后量化增益校正 |
WO2012158333A1 (en) | 2011-05-19 | 2012-11-22 | Dolby Laboratories Licensing Corporation | Forensic detection of parametric audio coding schemes |
US20130006644A1 (en) * | 2011-06-30 | 2013-01-03 | Zte Corporation | Method and device for spectral band replication, and method and system for audio decoding |
JP2013073230A (ja) * | 2011-09-29 | 2013-04-22 | Renesas Electronics Corp | オーディオ符号化装置 |
JP6036073B2 (ja) * | 2012-09-19 | 2016-11-30 | 富士通株式会社 | 送信ユニット、診断方法及び診断プログラム |
CN105531762B (zh) | 2013-09-19 | 2019-10-01 | 索尼公司 | 编码装置和方法、解码装置和方法以及程序 |
KR102356012B1 (ko) | 2013-12-27 | 2022-01-27 | 소니그룹주식회사 | 복호화 장치 및 방법, 및 프로그램 |
US9577798B1 (en) * | 2014-04-30 | 2017-02-21 | Keysight Technologies, Inc. | Real-time separation of signal components in spectrum analyzer |
CN106549652B (zh) * | 2015-09-18 | 2022-01-11 | 杜比实验室特许公司 | 时域滤波中的滤波器系数更新 |
US10332540B2 (en) | 2015-09-18 | 2019-06-25 | Dolby Laboratories Licensing Corporation | Filter coefficient updating in time domain filtering |
CN114420148B (zh) * | 2022-03-30 | 2022-06-14 | 北京百瑞互联技术有限公司 | 啸叫检测和抑制方法、装置、介质及设备 |
Family Cites Families (195)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3947827A (en) | 1974-05-29 | 1976-03-30 | Whittaker Corporation | Digital storage system for high frequency signals |
US4053711A (en) | 1976-04-26 | 1977-10-11 | Audio Pulse, Inc. | Simulation of reverberation in audio signals |
US4166924A (en) | 1977-05-12 | 1979-09-04 | Bell Telephone Laboratories, Incorporated | Removing reverberative echo components in speech signals |
FR2412987A1 (fr) | 1977-12-23 | 1979-07-20 | Ibm France | Procede de compression de donnees relatives au signal vocal et dispositif mettant en oeuvre ledit procede |
US4330689A (en) | 1980-01-28 | 1982-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Multirate digital voice communication processor |
GB2100430B (en) | 1981-06-15 | 1985-11-27 | Atomic Energy Authority Uk | Improving the spatial resolution of ultrasonic time-of-flight measurement system |
EP0070948B1 (fr) | 1981-07-28 | 1985-07-10 | International Business Machines Corporation | Procédé de codage de la voix et dispositif de mise en oeuvre dudit procédé |
US4700390A (en) | 1983-03-17 | 1987-10-13 | Kenji Machida | Signal synthesizer |
US4667340A (en) | 1983-04-13 | 1987-05-19 | Texas Instruments Incorporated | Voice messaging system with pitch-congruent baseband coding |
US4672670A (en) | 1983-07-26 | 1987-06-09 | Advanced Micro Devices, Inc. | Apparatus and methods for coding, decoding, analyzing and synthesizing a signal |
US4700362A (en) | 1983-10-07 | 1987-10-13 | Dolby Laboratories Licensing Corporation | A-D encoder and D-A decoder system |
DE3374109D1 (en) | 1983-10-28 | 1987-11-19 | Ibm | Method of recovering lost information in a digital speech transmission system, and transmission system using said method |
US4706287A (en) | 1984-10-17 | 1987-11-10 | Kintek, Inc. | Stereo generator |
JPH0212299Y2 (ko) | 1984-12-28 | 1990-04-06 | ||
US4885790A (en) | 1985-03-18 | 1989-12-05 | Massachusetts Institute Of Technology | Processing of acoustic waveforms |
JPH0774709B2 (ja) | 1985-07-24 | 1995-08-09 | 株式会社東芝 | 空気調和機 |
US4748669A (en) | 1986-03-27 | 1988-05-31 | Hughes Aircraft Company | Stereo enhancement system |
DE3683767D1 (de) | 1986-04-30 | 1992-03-12 | Ibm | Sprachkodierungsverfahren und einrichtung zur ausfuehrung dieses verfahrens. |
JPH0690209B2 (ja) | 1986-06-13 | 1994-11-14 | 株式会社島津製作所 | 反応管の攪拌装置 |
US4776014A (en) | 1986-09-02 | 1988-10-04 | General Electric Company | Method for pitch-aligned high-frequency regeneration in RELP vocoders |
GB8628046D0 (en) | 1986-11-24 | 1986-12-31 | British Telecomm | Transmission system |
US5054072A (en) | 1987-04-02 | 1991-10-01 | Massachusetts Institute Of Technology | Coding of acoustic waveforms |
US5285520A (en) | 1988-03-02 | 1994-02-08 | Kokusai Denshin Denwa Kabushiki Kaisha | Predictive coding apparatus |
FR2628918B1 (fr) | 1988-03-15 | 1990-08-10 | France Etat | Dispositif annuleur d'echo a filtrage en sous-bandes de frequence |
US5127054A (en) | 1988-04-29 | 1992-06-30 | Motorola, Inc. | Speech quality improvement for voice coders and synthesizers |
JPH0212299A (ja) | 1988-06-30 | 1990-01-17 | Toshiba Corp | 音場効果自動制御装置 |
JPH02177782A (ja) | 1988-12-28 | 1990-07-10 | Toshiba Corp | モノラルtv音声復調回路 |
US5297236A (en) | 1989-01-27 | 1994-03-22 | Dolby Laboratories Licensing Corporation | Low computational-complexity digital filter bank for encoder, decoder, and encoder/decoder |
EP0392126B1 (en) | 1989-04-11 | 1994-07-20 | International Business Machines Corporation | Fast pitch tracking process for LTP-based speech coders |
CA2014935C (en) * | 1989-05-04 | 1996-02-06 | James D. Johnston | Perceptually-adapted image coding system |
US5309526A (en) * | 1989-05-04 | 1994-05-03 | At&T Bell Laboratories | Image processing system |
US5434948A (en) | 1989-06-15 | 1995-07-18 | British Telecommunications Public Limited Company | Polyphonic coding |
US5261027A (en) | 1989-06-28 | 1993-11-09 | Fujitsu Limited | Code excited linear prediction speech coding system |
US4974187A (en) | 1989-08-02 | 1990-11-27 | Aware, Inc. | Modular digital signal processing system |
US5054075A (en) * | 1989-09-05 | 1991-10-01 | Motorola, Inc. | Subband decoding method and apparatus |
US4969040A (en) | 1989-10-26 | 1990-11-06 | Bell Communications Research, Inc. | Apparatus and method for differential sub-band coding of video signals |
JPH03214956A (ja) | 1990-01-19 | 1991-09-20 | Mitsubishi Electric Corp | テレビ会議装置 |
JP2906646B2 (ja) | 1990-11-09 | 1999-06-21 | 松下電器産業株式会社 | 音声帯域分割符号化装置 |
US5293449A (en) | 1990-11-23 | 1994-03-08 | Comsat Corporation | Analysis-by-synthesis 2,4 kbps linear predictive speech codec |
US5632005A (en) * | 1991-01-08 | 1997-05-20 | Ray Milton Dolby | Encoder/decoder for multidimensional sound fields |
JP3158458B2 (ja) | 1991-01-31 | 2001-04-23 | 日本電気株式会社 | 階層表現された信号の符号化方式 |
GB9104186D0 (en) | 1991-02-28 | 1991-04-17 | British Aerospace | Apparatus for and method of digital signal processing |
US5235420A (en) | 1991-03-22 | 1993-08-10 | Bell Communications Research, Inc. | Multilayer universal video coder |
JP2990829B2 (ja) | 1991-03-29 | 1999-12-13 | ヤマハ株式会社 | 効果付与装置 |
JP3050978B2 (ja) | 1991-12-18 | 2000-06-12 | 沖電気工業株式会社 | 音声符号化方法 |
JPH05191885A (ja) | 1992-01-10 | 1993-07-30 | Clarion Co Ltd | 音響信号イコライザ回路 |
JP3500633B2 (ja) | 1992-02-07 | 2004-02-23 | セイコーエプソン株式会社 | マイクロエレクトロニクス・デバイスのエミュレーション方法及びエミュレーション装置並びにシミュレーション装置 |
US5559891A (en) | 1992-02-13 | 1996-09-24 | Nokia Technology Gmbh | Device to be used for changing the acoustic properties of a room |
US5765127A (en) | 1992-03-18 | 1998-06-09 | Sony Corp | High efficiency encoding method |
GB9211756D0 (en) | 1992-06-03 | 1992-07-15 | Gerzon Michael A | Stereophonic directional dispersion method |
US5278909A (en) | 1992-06-08 | 1994-01-11 | International Business Machines Corporation | System and method for stereo digital audio compression with co-channel steering |
US5436940A (en) * | 1992-06-11 | 1995-07-25 | Massachusetts Institute Of Technology | Quadrature mirror filter banks and method |
IT1257065B (it) | 1992-07-31 | 1996-01-05 | Sip | Codificatore a basso ritardo per segnali audio, utilizzante tecniche di analisi per sintesi. |
JPH0685607A (ja) | 1992-08-31 | 1994-03-25 | Alpine Electron Inc | 高域成分復元装置 |
US5408580A (en) * | 1992-09-21 | 1995-04-18 | Aware, Inc. | Audio compression system employing multi-rate signal analysis |
JP2779886B2 (ja) | 1992-10-05 | 1998-07-23 | 日本電信電話株式会社 | 広帯域音声信号復元方法 |
FR2696874B1 (fr) * | 1992-10-13 | 1994-12-09 | Thomson Csf | Modulateur d'onde électromagnétique à puits quantiques. |
JP3191457B2 (ja) | 1992-10-31 | 2001-07-23 | ソニー株式会社 | 高能率符号化装置、ノイズスペクトル変更装置及び方法 |
CA2106440C (en) | 1992-11-30 | 1997-11-18 | Jelena Kovacevic | Method and apparatus for reducing correlated errors in subband coding systems with quantizers |
US5455888A (en) | 1992-12-04 | 1995-10-03 | Northern Telecom Limited | Speech bandwidth extension method and apparatus |
JPH06202629A (ja) | 1992-12-28 | 1994-07-22 | Yamaha Corp | 楽音の効果付与装置 |
JPH06215482A (ja) | 1993-01-13 | 1994-08-05 | Hitachi Micom Syst:Kk | オーディオ情報記録媒体、およびこのオーディオ情報記録媒体を用いる音場生成装置 |
JP3496230B2 (ja) | 1993-03-16 | 2004-02-09 | パイオニア株式会社 | 音場制御システム |
JPH0685607U (ja) | 1993-06-01 | 1994-12-13 | 千加士 大宮 | 差替え可能可動フック付き櫛 |
JP3685812B2 (ja) * | 1993-06-29 | 2005-08-24 | ソニー株式会社 | 音声信号送受信装置 |
US5463424A (en) | 1993-08-03 | 1995-10-31 | Dolby Laboratories Licensing Corporation | Multi-channel transmitter/receiver system providing matrix-decoding compatible signals |
US5581653A (en) | 1993-08-31 | 1996-12-03 | Dolby Laboratories Licensing Corporation | Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder |
DE4331376C1 (de) | 1993-09-15 | 1994-11-10 | Fraunhofer Ges Forschung | Verfahren zum Bestimmen der zu wählenden Codierungsart für die Codierung von wenigstens zwei Signalen |
US5533052A (en) * | 1993-10-15 | 1996-07-02 | Comsat Corporation | Adaptive predictive coding with transform domain quantization based on block size adaptation, backward adaptive power gain control, split bit-allocation and zero input response compensation |
WO1995015041A1 (en) | 1993-11-26 | 1995-06-01 | Philips Electronics N.V. | A transmission system, and a transmitter and a receiver for use in such a system |
JPH07160299A (ja) | 1993-12-06 | 1995-06-23 | Hitachi Denshi Ltd | 音声信号帯域圧縮伸張装置並びに音声信号の帯域圧縮伝送方式及び再生方式 |
JP3404837B2 (ja) | 1993-12-07 | 2003-05-12 | ソニー株式会社 | 多層符号化装置 |
JP2616549B2 (ja) | 1993-12-10 | 1997-06-04 | 日本電気株式会社 | 音声復号装置 |
KR960012475B1 (ko) | 1994-01-18 | 1996-09-20 | 대우전자 주식회사 | 디지탈 오디오 부호화장치의 채널별 비트 할당 장치 |
DE4409368A1 (de) | 1994-03-18 | 1995-09-21 | Fraunhofer Ges Forschung | Verfahren zum Codieren mehrerer Audiosignale |
US5787387A (en) | 1994-07-11 | 1998-07-28 | Voxware, Inc. | Harmonic adaptive speech coding method and system |
JP3483958B2 (ja) | 1994-10-28 | 2004-01-06 | 三菱電機株式会社 | 広帯域音声復元装置及び広帯域音声復元方法及び音声伝送システム及び音声伝送方法 |
US5839102A (en) | 1994-11-30 | 1998-11-17 | Lucent Technologies Inc. | Speech coding parameter sequence reconstruction by sequence classification and interpolation |
JPH08162964A (ja) * | 1994-12-08 | 1996-06-21 | Sony Corp | 情報圧縮装置及び方法、情報伸張装置及び方法、並びに記録媒体 |
FR2729024A1 (fr) | 1994-12-30 | 1996-07-05 | Matra Communication | Annuleur d'echo acoustique avec filtrage en sous-bandes |
US5701390A (en) | 1995-02-22 | 1997-12-23 | Digital Voice Systems, Inc. | Synthesis of MBE-based coded speech using regenerated phase information |
JP2956548B2 (ja) | 1995-10-05 | 1999-10-04 | 松下電器産業株式会社 | 音声帯域拡大装置 |
JP3139602B2 (ja) | 1995-03-24 | 2001-03-05 | 日本電信電話株式会社 | 音響信号符号化方法及び復号化方法 |
JP3416331B2 (ja) | 1995-04-28 | 2003-06-16 | 松下電器産業株式会社 | 音声復号化装置 |
US5915235A (en) | 1995-04-28 | 1999-06-22 | Dejaco; Andrew P. | Adaptive equalizer preprocessor for mobile telephone speech coder to modify nonideal frequency response of acoustic transducer |
US5692050A (en) | 1995-06-15 | 1997-11-25 | Binaura Corporation | Method and apparatus for spatially enhancing stereo and monophonic signals |
JPH095778A (ja) | 1995-06-23 | 1997-01-10 | Matsushita Electric Ind Co Ltd | 空間光変調素子 |
JPH0946233A (ja) | 1995-07-31 | 1997-02-14 | Kokusai Electric Co Ltd | 音声符号化方法とその装置、音声復号方法とその装置 |
JPH0955778A (ja) | 1995-08-15 | 1997-02-25 | Fujitsu Ltd | 音声信号の広帯域化装置 |
US5774837A (en) | 1995-09-13 | 1998-06-30 | Voxware, Inc. | Speech coding system and method using voicing probability determination |
JP3301473B2 (ja) | 1995-09-27 | 2002-07-15 | 日本電信電話株式会社 | 広帯域音声信号復元方法 |
US5774737A (en) * | 1995-10-13 | 1998-06-30 | Matsushita Electric Industrial Co., Ltd. | Variable word length very long instruction word instruction processor with word length register or instruction number register |
US5956674A (en) | 1995-12-01 | 1999-09-21 | Digital Theater Systems, Inc. | Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
US5687191A (en) | 1995-12-06 | 1997-11-11 | Solana Technology Development Corporation | Post-compression hidden data transport |
US5732189A (en) * | 1995-12-22 | 1998-03-24 | Lucent Technologies Inc. | Audio signal coding with a signal adaptive filterbank |
TW307960B (en) | 1996-02-15 | 1997-06-11 | Philips Electronics Nv | Reduced complexity signal transmission system |
JP3519859B2 (ja) | 1996-03-26 | 2004-04-19 | 三菱電機株式会社 | 符号器及び復号器 |
EP0798866A2 (en) | 1996-03-27 | 1997-10-01 | Kabushiki Kaisha Toshiba | Digital data processing system |
JP3529542B2 (ja) | 1996-04-08 | 2004-05-24 | 株式会社東芝 | 信号の伝送/記録/受信/再生方法と装置及び記録媒体 |
US5848164A (en) | 1996-04-30 | 1998-12-08 | The Board Of Trustees Of The Leland Stanford Junior University | System and method for effects processing on audio subband data |
DE19628292B4 (de) | 1996-07-12 | 2007-08-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Codieren und Decodieren von Stereoaudiospektralwerten |
DE19628293C1 (de) | 1996-07-12 | 1997-12-11 | Fraunhofer Ges Forschung | Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion |
US5951235A (en) | 1996-08-08 | 1999-09-14 | Jerr-Dan Corporation | Advanced rollback wheel-lift |
CA2184541A1 (en) | 1996-08-30 | 1998-03-01 | Tet Hin Yeap | Method and apparatus for wavelet modulation of signals for transmission and/or storage |
GB2317537B (en) * | 1996-09-19 | 2000-05-17 | Matra Marconi Space | Digital signal processing apparatus for frequency demultiplexing or multiplexing |
JP3707153B2 (ja) | 1996-09-24 | 2005-10-19 | ソニー株式会社 | ベクトル量子化方法、音声符号化方法及び装置 |
JPH10124088A (ja) | 1996-10-24 | 1998-05-15 | Sony Corp | 音声帯域幅拡張装置及び方法 |
US5875122A (en) | 1996-12-17 | 1999-02-23 | Intel Corporation | Integrated systolic architecture for decomposition and reconstruction of signals using wavelet transforms |
US5886276A (en) * | 1997-01-16 | 1999-03-23 | The Board Of Trustees Of The Leland Stanford Junior University | System and method for multiresolution scalable audio signal encoding |
US6345246B1 (en) | 1997-02-05 | 2002-02-05 | Nippon Telegraph And Telephone Corporation | Apparatus and method for efficiently coding plural channels of an acoustic signal at low bit rates |
JP4326031B2 (ja) * | 1997-02-06 | 2009-09-02 | ソニー株式会社 | 帯域合成フィルタバンク及びフィルタリング方法並びに復号化装置 |
US5862228A (en) | 1997-02-21 | 1999-01-19 | Dolby Laboratories Licensing Corporation | Audio matrix encoding |
US6236731B1 (en) * | 1997-04-16 | 2001-05-22 | Dspfactory Ltd. | Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signal in hearing aids |
IL120788A (en) | 1997-05-06 | 2000-07-16 | Audiocodes Ltd | Systems and methods for encoding and decoding speech for lossy transmission networks |
US6370504B1 (en) * | 1997-05-29 | 2002-04-09 | University Of Washington | Speech recognition on MPEG/Audio encoded files |
SE512719C2 (sv) * | 1997-06-10 | 2000-05-02 | Lars Gustaf Liljeryd | En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion |
WO1999003096A1 (fr) * | 1997-07-11 | 1999-01-21 | Sony Corporation | Procede et dispositif de codage et decodage d'informations et support de distribution |
US5890125A (en) * | 1997-07-16 | 1999-03-30 | Dolby Laboratories Licensing Corporation | Method and apparatus for encoding and decoding multiple audio channels at low bit rates using adaptive selection of encoding method |
US6144937A (en) | 1997-07-23 | 2000-11-07 | Texas Instruments Incorporated | Noise suppression of speech by signal processing including applying a transform to time domain input sequences of digital signals representing audio information |
US6124895A (en) * | 1997-10-17 | 2000-09-26 | Dolby Laboratories Licensing Corporation | Frame-based audio coding with video/audio data synchronization by dynamic audio frame alignment |
KR100335611B1 (ko) | 1997-11-20 | 2002-10-09 | 삼성전자 주식회사 | 비트율 조절이 가능한 스테레오 오디오 부호화/복호화 방법 및 장치 |
US20010040930A1 (en) * | 1997-12-19 | 2001-11-15 | Duane L. Abbey | Multi-band direct sampling receiver |
KR100304092B1 (ko) | 1998-03-11 | 2001-09-26 | 마츠시타 덴끼 산교 가부시키가이샤 | 오디오 신호 부호화 장치, 오디오 신호 복호화 장치 및 오디오 신호 부호화/복호화 장치 |
JPH11262100A (ja) | 1998-03-13 | 1999-09-24 | Matsushita Electric Ind Co Ltd | オーディオ信号の符号化/復号方法および装置 |
AU3372199A (en) | 1998-03-30 | 1999-10-18 | Voxware, Inc. | Low-complexity, low-delay, scalable and embedded speech and audio coding with adaptive frame loss concealment |
KR100474826B1 (ko) | 1998-05-09 | 2005-05-16 | 삼성전자주식회사 | 음성부호화기에서의주파수이동법을이용한다중밴드의유성화도결정방법및그장치 |
JP3354880B2 (ja) | 1998-09-04 | 2002-12-09 | 日本電信電話株式会社 | 情報多重化方法、情報抽出方法および装置 |
JP2000099061A (ja) | 1998-09-25 | 2000-04-07 | Sony Corp | 効果音付加装置 |
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 |
CA2252170A1 (en) | 1998-10-27 | 2000-04-27 | Bruno Bessette | A method and device for high quality coding of wideband speech and audio signals |
GB2344036B (en) | 1998-11-23 | 2004-01-21 | Mitel Corp | Single-sided subband filters |
SE9903552D0 (sv) | 1999-01-27 | 1999-10-01 | Lars Liljeryd | Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching |
SE9903553D0 (sv) | 1999-01-27 | 1999-10-01 | Lars Liljeryd | Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL) |
US6507658B1 (en) | 1999-01-27 | 2003-01-14 | Kind Of Loud Technologies, Llc | Surround sound panner |
WO2000051013A2 (en) * | 1999-02-26 | 2000-08-31 | Microsoft Corporation | A system and method for producing modulated complex lapped transforms |
US6496795B1 (en) * | 1999-05-05 | 2002-12-17 | Microsoft Corporation | Modulated complex lapped transform for integrated signal enhancement and coding |
JP2000267699A (ja) | 1999-03-19 | 2000-09-29 | Nippon Telegr & Teleph Corp <Ntt> | 音響信号符号化方法および装置、そのプログラム記録媒体、および音響信号復号装置 |
US6363338B1 (en) * | 1999-04-12 | 2002-03-26 | Dolby Laboratories Licensing Corporation | Quantization in perceptual audio coders with compensation for synthesis filter noise spreading |
US6937665B1 (en) * | 1999-04-19 | 2005-08-30 | Interuniversitaire Micron Elektronica Centrum | Method and apparatus for multi-user transmission |
US6539357B1 (en) | 1999-04-29 | 2003-03-25 | Agere Systems Inc. | Technique for parametric coding of a signal containing information |
US6298322B1 (en) | 1999-05-06 | 2001-10-02 | Eric Lindemann | Encoding and synthesis of tonal audio signals using dominant sinusoids and a vector-quantized residual tonal signal |
US6426977B1 (en) * | 1999-06-04 | 2002-07-30 | Atlantic Aerospace Electronics Corporation | System and method for applying and removing Gaussian covering functions |
US6226616B1 (en) | 1999-06-21 | 2001-05-01 | Digital Theater Systems, Inc. | Sound quality of established low bit-rate audio coding systems without loss of decoder compatibility |
KR100749291B1 (ko) | 1999-07-27 | 2007-08-14 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 필터링 장치 |
JP4639441B2 (ja) * | 1999-09-01 | 2011-02-23 | ソニー株式会社 | ディジタル信号処理装置および処理方法、並びにディジタル信号記録装置および記録方法 |
DE19947098A1 (de) | 1999-09-30 | 2000-11-09 | Siemens Ag | Verfahren zur Ermittlung der Kurbelwellenstellung |
EP1147514B1 (en) | 1999-11-16 | 2005-04-06 | 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 |
US6947509B1 (en) | 1999-11-30 | 2005-09-20 | Verance Corporation | Oversampled filter bank for subband processing |
JP2001184090A (ja) | 1999-12-27 | 2001-07-06 | Fuji Techno Enterprise:Kk | 信号符号化装置,及び信号復号化装置,並びに信号符号化プログラムを記録したコンピュータ読み取り可能な記録媒体,及び信号復号化プログラムを記録したコンピュータ読み取り可能な記録媒体 |
KR100359821B1 (ko) | 2000-01-20 | 2002-11-07 | 엘지전자 주식회사 | 움직임 보상 적응형 영상 압축과 복원방법 및 그 장치와디코더 |
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 |
US6718300B1 (en) * | 2000-06-02 | 2004-04-06 | Agere Systems Inc. | Method and apparatus for reducing aliasing in cascaded filter banks |
US6879652B1 (en) | 2000-07-14 | 2005-04-12 | Nielsen Media Research, Inc. | Method for encoding an input signal |
WO2002007481A2 (en) | 2000-07-19 | 2002-01-24 | Koninklijke Philips Electronics N.V. | Multi-channel stereo converter for deriving a stereo surround and/or audio centre signal |
US20020040299A1 (en) | 2000-07-31 | 2002-04-04 | Kenichi Makino | Apparatus and method for performing orthogonal transform, apparatus and method for performing inverse orthogonal transform, apparatus and method for performing transform encoding, and apparatus and method for encoding data |
AU2001283205A1 (en) * | 2000-08-07 | 2002-02-18 | Apherma Corporation | Method and apparatus for filtering and compressing sound signals |
SE0004163D0 (sv) | 2000-11-14 | 2000-11-14 | Coding Technologies Sweden Ab | Enhancing perceptual performance of high frequency reconstruction coding methods by adaptive filtering |
SE0004187D0 (sv) | 2000-11-15 | 2000-11-15 | Coding Technologies Sweden Ab | Enhancing the performance of coding systems that use high frequency reconstruction methods |
EP1211636A1 (en) | 2000-11-29 | 2002-06-05 | STMicroelectronics S.r.l. | Filtering device and method for reducing noise in electrical signals, in particular acoustic signals and images |
JP4649735B2 (ja) * | 2000-12-14 | 2011-03-16 | ソニー株式会社 | 符号化装置および方法、並びに記録媒体 |
AU2001276588A1 (en) | 2001-01-11 | 2002-07-24 | K. P. P. Kalyan Chakravarthy | Adaptive-block-length audio coder |
US6931373B1 (en) * | 2001-02-13 | 2005-08-16 | Hughes Electronics Corporation | Prototype waveform phase modeling for a frequency domain interpolative speech codec system |
SE0101175D0 (sv) | 2001-04-02 | 2001-04-02 | Coding Technologies Sweden Ab | Aliasing reduction using complex-exponential-modulated filterbanks |
US7356464B2 (en) * | 2001-05-11 | 2008-04-08 | Koninklijke Philips Electronics, N.V. | Method and device for estimating signal power in compressed audio using scale factors |
US6473013B1 (en) * | 2001-06-20 | 2002-10-29 | Scott R. Velazquez | Parallel processing analog and digital converter |
US6879955B2 (en) * | 2001-06-29 | 2005-04-12 | Microsoft Corporation | Signal modification based on continuous time warping for low bit rate CELP coding |
SE0202159D0 (sv) | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
CA2354808A1 (en) | 2001-08-07 | 2003-02-07 | King Tam | Sub-band adaptive signal processing in an oversampled filterbank |
CA2354755A1 (en) * | 2001-08-07 | 2003-02-07 | Dspfactory Ltd. | Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank |
CA2354858A1 (en) * | 2001-08-08 | 2003-02-08 | Dspfactory Ltd. | Subband directional audio signal processing using an oversampled filterbank |
EP1292036B1 (en) | 2001-08-23 | 2012-08-01 | Nippon Telegraph And Telephone Corporation | Digital signal decoding methods and apparatuses |
US7362818B1 (en) * | 2001-08-30 | 2008-04-22 | Nortel Networks Limited | Amplitude and phase comparator for microwave power amplifier |
US6988066B2 (en) | 2001-10-04 | 2006-01-17 | At&T Corp. | Method of bandwidth extension for narrow-band speech |
US6895375B2 (en) | 2001-10-04 | 2005-05-17 | At&T Corp. | System for bandwidth extension of Narrow-band speech |
DE60208426T2 (de) | 2001-11-02 | 2006-08-24 | Matsushita Electric Industrial Co., Ltd., Kadoma | Vorrichtung zur signalkodierung, signaldekodierung und system zum verteilen von audiodaten |
AU2002352182A1 (en) * | 2001-11-29 | 2003-06-10 | Coding Technologies Ab | Methods for improving high frequency reconstruction |
US7095907B1 (en) * | 2002-01-10 | 2006-08-22 | Ricoh Co., Ltd. | Content and display device dependent creation of smaller representation of images |
US6771177B2 (en) | 2002-01-14 | 2004-08-03 | David Gene Alderman | Warning device for food storage appliances |
US20100042406A1 (en) * | 2002-03-04 | 2010-02-18 | James David Johnston | Audio signal processing using improved perceptual model |
US20030215013A1 (en) * | 2002-04-10 | 2003-11-20 | Budnikov Dmitry N. | Audio encoder with adaptive short window grouping |
US6904146B2 (en) * | 2002-05-03 | 2005-06-07 | Acoustic Technology, Inc. | Full duplex echo cancelling circuit |
JP3579047B2 (ja) * | 2002-07-19 | 2004-10-20 | 日本電気株式会社 | オーディオ復号装置と復号方法およびプログラム |
DE60304479T2 (de) * | 2002-08-01 | 2006-12-14 | Matsushita Electric Industrial Co., Ltd., Kadoma | Audiodekodierungsvorrichtung und audiodekodierungsverfahren auf der basis der spektralband duplikation |
JP3861770B2 (ja) | 2002-08-21 | 2006-12-20 | ソニー株式会社 | 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体 |
US6792057B2 (en) * | 2002-08-29 | 2004-09-14 | Bae Systems Information And Electronic Systems Integration Inc | Partial band reconstruction of frequency channelized filters |
SE0202770D0 (sv) | 2002-09-18 | 2002-09-18 | Coding Technologies Sweden Ab | Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks |
CN100492492C (zh) * | 2002-09-19 | 2009-05-27 | 松下电器产业株式会社 | 音频解码设备和方法 |
US7191136B2 (en) | 2002-10-01 | 2007-03-13 | Ibiquity Digital Corporation | Efficient coding of high frequency signal information in a signal using a linear/non-linear prediction model based on a low pass baseband |
US20040252772A1 (en) * | 2002-12-31 | 2004-12-16 | Markku Renfors | Filter bank based signal processing |
US20040162866A1 (en) * | 2003-02-19 | 2004-08-19 | Malvar Henrique S. | System and method for producing fast modulated complex lapped transforms |
FR2852172A1 (fr) | 2003-03-04 | 2004-09-10 | France Telecom | Procede et dispositif de reconstruction spectrale d'un signal audio |
US7318035B2 (en) * | 2003-05-08 | 2008-01-08 | Dolby Laboratories Licensing Corporation | Audio coding systems and methods using spectral component coupling and spectral component regeneration |
US7447317B2 (en) | 2003-10-02 | 2008-11-04 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V | Compatible multi-channel coding/decoding by weighting the downmix channel |
US6982377B2 (en) * | 2003-12-18 | 2006-01-03 | Texas Instruments Incorporated | Time-scale modification of music signals based on polyphase filterbanks and constrained time-domain processing |
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