BR112018005391A2 - aparelho para processamento de sinais de áudio, método de processamento de sinais de áudio, produto de programa de computador - Google Patents

aparelho para processamento de sinais de áudio, método de processamento de sinais de áudio, produto de programa de computador

Info

Publication number
BR112018005391A2
BR112018005391A2 BR112018005391A BR112018005391A BR112018005391A2 BR 112018005391 A2 BR112018005391 A2 BR 112018005391A2 BR 112018005391 A BR112018005391 A BR 112018005391A BR 112018005391 A BR112018005391 A BR 112018005391A BR 112018005391 A2 BR112018005391 A2 BR 112018005391A2
Authority
BR
Brazil
Prior art keywords
frequency
audio signal
subband
signal processing
sampling
Prior art date
Application number
BR112018005391A
Other languages
English (en)
Other versions
BR112018005391B1 (pt
Inventor
Pieter Janse Cornelis
Cornelis Antonius Van Stuivenberg Leonardus
Original Assignee
Koninklijke Philips Nv
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=54185901&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR112018005391(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninklijke Philips Nv filed Critical Koninklijke Philips Nv
Publication of BR112018005391A2 publication Critical patent/BR112018005391A2/pt
Publication of BR112018005391B1 publication Critical patent/BR112018005391B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • 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
    • 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
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • 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
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Telephone Function (AREA)

Abstract

a invenção se refere a um aparelho para processamento de sinais de áudio que compreende um receptor (403) para receber um sinal de áudio com sua frequência de amostragem aumentada para uma primeira frequência de amostragem, sendo que o sinal de áudio tem uma frequência máxima menor que a metade da primeira frequência de amostragem por uma primeira margem de frequência. um banco de filtros (405) gera sinais de sub-banda para o sinal de áudio digital com o uso de subfiltros sobrepostos. um primeiro deslocador de frequência (407) aplica um deslocamento de frequência a pelo menos uma sub-banda do conjunto de sub-bandas e um dizimador (409) dizima os sinais de sub-banda por um fator de dizimação, resultando em uma frequência de amostragem dizimada que é pelo menos duas vezes maior que a largura de banda de cada um dos subfiltros sobrepostos. o deslocamento de frequência para uma sub-banda é disposto de modo a deslocar a sub-banda para um intervalo de frequência é um múltiplo de um intervalo de frequência que varia de zero à metade da frequência de amostragem dizimada. a sub-banda pode ser processada individualmente e as sub-bandas processadas podem ser subsequentemente combinadas para gerar um sinal de saída de banda completa.
BR112018005391-0A 2015-09-22 2016-09-19 Aparelho para processamento de sinais de áudio, método de processamento de sinais de áudio, e dispositivo BR112018005391B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15186269.5 2015-09-22
EP15186269 2015-09-22
PCT/EP2016/072099 WO2017050669A1 (en) 2015-09-22 2016-09-19 Audio signal processing

Publications (2)

Publication Number Publication Date
BR112018005391A2 true BR112018005391A2 (pt) 2018-10-09
BR112018005391B1 BR112018005391B1 (pt) 2023-11-21

Family

ID=54185901

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112018005391-0A BR112018005391B1 (pt) 2015-09-22 2016-09-19 Aparelho para processamento de sinais de áudio, método de processamento de sinais de áudio, e dispositivo

Country Status (8)

Country Link
US (1) US10477313B2 (pt)
EP (1) EP3353785B2 (pt)
JP (1) JP6564135B2 (pt)
CN (1) CN108140396B (pt)
BR (1) BR112018005391B1 (pt)
RU (1) RU2727968C2 (pt)
TR (1) TR201908841T4 (pt)
WO (1) WO2017050669A1 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107333192B (zh) * 2017-05-08 2019-12-13 深圳市创锐智汇科技有限公司 一种用于音箱的反馈抑制的方法和装置
CN109036457B (zh) * 2018-09-10 2021-10-08 广州酷狗计算机科技有限公司 恢复音频信号的方法和装置
US11107453B2 (en) * 2019-05-09 2021-08-31 Dialog Semiconductor B.V. Anti-noise signal generator
CN111294367B (zh) * 2020-05-14 2020-09-01 腾讯科技（深圳）有限公司 音频信号后处理方法和装置、存储介质及电子设备
CN111798831B (zh) * 2020-06-16 2023-11-28 武汉理工大学 一种声音粒子合成方法及装置
CN111916090B (zh) * 2020-08-17 2024-03-05 北京百瑞互联技术股份有限公司 一种lc3编码器近奈奎斯特频率信号检测方法、检测器、存储介质及设备
CN112637741B (zh) * 2020-12-30 2023-03-10 广州酷狗计算机科技有限公司 音频信号处理方法、装置、芯片、电子设备及存储介质
CN112863477B (zh) * 2020-12-31 2023-06-27 出门问问(苏州)信息科技有限公司 一种语音合成方法、装置及存储介质
US11837244B2 (en) * 2021-03-29 2023-12-05 Invictumtech Inc. Analysis filter bank and computing procedure thereof, analysis filter bank based signal processing system and procedure suitable for real-time applications

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2164025A1 (en) * 1995-01-04 1996-07-05 David Goodwin Shaw Sub-band signal processor
US20020032571A1 (en) * 1996-09-25 2002-03-14 Ka Y. Leung Method and apparatus for storing digital audio and playback thereof
GB2344036B (en) * 1998-11-23 2004-01-21 Mitel Corp Single-sided subband filters
KR20000057739A (ko) * 1999-01-12 2000-09-25 비센트 비.인그라시아 서브대역 에코 소거기 및 그 방법
US6628781B1 (en) * 1999-06-03 2003-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
AU1837200A (en) * 1999-11-30 2001-06-12 Verance Corporation Oversampled filter bank for subband processing
AU2110001A (en) 1999-12-31 2001-07-16 Thomson Licensing S.A. Subband adpcm voice encoding and decoding
JP2001356799A (ja) * 2000-06-12 2001-12-26 Toshiba Corp タイム／ピッチ変換装置及びタイム／ピッチ変換方法
JP3576941B2 (ja) * 2000-08-25 2004-10-13 株式会社ケンウッド 周波数間引き装置、周波数間引き方法及び記録媒体
CA2399159A1 (en) * 2002-08-16 2004-02-16 Dspfactory Ltd. Convergence improvement for oversampled subband adaptive filters
EP1543307B1 (en) * 2002-09-19 2006-02-22 Matsushita Electric Industrial Co., Ltd. Audio decoding apparatus and method
US7272567B2 (en) * 2004-03-25 2007-09-18 Zoran Fejzo Scalable lossless audio codec and authoring tool
US7433463B2 (en) * 2004-08-10 2008-10-07 Clarity Technologies, Inc. Echo cancellation and noise reduction method
JP4939424B2 (ja) * 2004-11-02 2012-05-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 複素値のフィルタ・バンクを用いたオーディオ信号の符号化及び復号化
US20070237335A1 (en) * 2006-04-11 2007-10-11 Queen's University Of Belfast Hormonic inversion of room impulse response signals
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
JP2008219779A (ja) * 2007-03-07 2008-09-18 Mitsubishi Electric Corp 不要成分除去回路及びデジタルフィルタ
US8330873B2 (en) * 2007-03-14 2012-12-11 Larry Silver Signal demodulator with overmodulation protection
JP5191184B2 (ja) * 2007-08-03 2013-04-24 日本電信電話株式会社 ダウンサンプリング装置とダウンサンプリング方法、及びそのプログラム
WO2010013752A1 (ja) * 2008-07-29 2010-02-04 ヤマハ株式会社 演奏関連情報出力装置、演奏関連情報出力装置を備えるシステム、及び電子楽器
EP2200180B1 (en) * 2008-12-08 2015-09-23 Harman Becker Automotive Systems GmbH Subband signal processing
EP2234103B1 (en) * 2009-03-26 2011-09-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for manipulating an audio signal
GB2473267A (en) * 2009-09-07 2011-03-09 Nokia Corp Processing audio signals to reduce noise
KR102020334B1 (ko) * 2010-01-19 2019-09-10 돌비 인터네셔널 에이비 고조파 전위에 기초하여 개선된 서브밴드 블록
ES2522171T3 (es) * 2010-03-09 2014-11-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aparato y método para procesar una señal de audio usando alineación de borde de patching
US9609451B2 (en) * 2015-02-12 2017-03-28 Dts, Inc. Multi-rate system for audio processing

Also Published As

Publication number Publication date
BR112018005391B1 (pt) 2023-11-21
RU2018114673A3 (pt) 2020-02-26
RU2018114673A (ru) 2019-10-23
JP2018535444A (ja) 2018-11-29
JP6564135B2 (ja) 2019-08-21
RU2727968C2 (ru) 2020-07-28
WO2017050669A1 (en) 2017-03-30
CN108140396A (zh) 2018-06-08
TR201908841T4 (tr) 2019-07-22
EP3353785B2 (en) 2021-09-22
US20190052959A1 (en) 2019-02-14
EP3353785B1 (en) 2019-04-03
EP3353785A1 (en) 2018-08-01
US10477313B2 (en) 2019-11-12
CN108140396B (zh) 2022-11-25

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Legal Events

Date Code Title Description
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/09/2016, OBSERVADAS AS CONDICOES LEGAIS