ATE548727T1 - Nachfilter für geschichtete codecs - Google Patents

Nachfilter für geschichtete codecs

Info

Publication number
ATE548727T1
ATE548727T1 AT07852270T AT07852270T ATE548727T1 AT E548727 T1 ATE548727 T1 AT E548727T1 AT 07852270 T AT07852270 T AT 07852270T AT 07852270 T AT07852270 T AT 07852270T AT E548727 T1 ATE548727 T1 AT E548727T1
Authority
AT
Austria
Prior art keywords
primary
signal
decoder
post
filter
Prior art date
Application number
AT07852270T
Other languages
English (en)
Inventor
Stefan Bruhn
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE548727T1 publication Critical patent/ATE548727T1/de

Links

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
    • 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
    • G10L19/04—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 using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
AT07852270T 2007-03-02 2007-12-14 Nachfilter für geschichtete codecs ATE548727T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89263807P 2007-03-02 2007-03-02
PCT/SE2007/050999 WO2008108701A1 (en) 2007-03-02 2007-12-14 Postfilter for layered codecs

Publications (1)

Publication Number Publication Date
ATE548727T1 true ATE548727T1 (de) 2012-03-15

Family

ID=39738488

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07852270T ATE548727T1 (de) 2007-03-02 2007-12-14 Nachfilter für geschichtete codecs

Country Status (6)

Country Link
US (1) US8571852B2 (de)
EP (1) EP2132732B1 (de)
JP (1) JP5255575B2 (de)
CN (1) CN101622667B (de)
AT (1) ATE548727T1 (de)
WO (1) WO2008108701A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102222505B (zh) * 2010-04-13 2012-12-19 中兴通讯股份有限公司 可分层音频编解码方法系统及瞬态信号可分层编解码方法
US8886523B2 (en) * 2010-04-14 2014-11-11 Huawei Technologies Co., Ltd. Audio decoding based on audio class with control code for post-processing modes
EP2572499B1 (de) * 2010-05-18 2018-07-11 Telefonaktiebolaget LM Ericsson (publ) Kodiereradaptation in einem telefonkonferenzsystem
CN105261371B (zh) * 2010-07-02 2019-12-03 杜比国际公司 选择性低音后置滤波器
US9047875B2 (en) * 2010-07-19 2015-06-02 Futurewei Technologies, Inc. Spectrum flatness control for bandwidth extension
US9026451B1 (en) * 2012-05-09 2015-05-05 Google Inc. Pitch post-filter
EP4243014A4 (de) 2021-01-25 2024-07-17 Samsung Electronics Co., Ltd. Vorrichtung und verfahren zur verarbeitung eines mehrkanal-audiosignals

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3586696T2 (de) * 1984-05-30 1993-04-01 Hitachi Ltd Pcm-coder/decoder mit zweidraht/vierdrahtumwandlung.
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
US5694519A (en) * 1992-02-18 1997-12-02 Lucent Technologies, Inc. Tunable post-filter for tandem coders
JP2964879B2 (ja) * 1994-08-22 1999-10-18 日本電気株式会社 ポストフィルタ
JPH08163594A (ja) * 1994-12-12 1996-06-21 Sony Corp 動画像復号化方法及び動画像復号化装置
US5867814A (en) * 1995-11-17 1999-02-02 National Semiconductor Corporation Speech coder that utilizes correlation maximization to achieve fast excitation coding, and associated coding method
US5798795A (en) * 1996-03-01 1998-08-25 Florida Atlantic University Method and apparatus for encoding and decoding video signals
JP2940464B2 (ja) * 1996-03-27 1999-08-25 日本電気株式会社 音声復号化装置
US6167375A (en) * 1997-03-17 2000-12-26 Kabushiki Kaisha Toshiba Method for encoding and decoding a speech signal including background noise
JP3206497B2 (ja) * 1997-06-16 2001-09-10 日本電気株式会社 インデックスによる信号生成型適応符号帳
WO1999030315A1 (en) * 1997-12-08 1999-06-17 Mitsubishi Denki Kabushiki Kaisha Sound signal processing method and sound signal processing device
AU771454B2 (en) * 1999-04-16 2004-03-25 Dolby Laboratories Licensing Corporation Using gain-adaptive quantization and non-uniform symbol lengths for audio coding
US7167828B2 (en) * 2000-01-11 2007-01-23 Matsushita Electric Industrial Co., Ltd. Multimode speech coding apparatus and decoding apparatus
US7606703B2 (en) * 2000-11-15 2009-10-20 Texas Instruments Incorporated Layered celp system and method with varying perceptual filter or short-term postfilter strengths
US7599835B2 (en) * 2002-03-08 2009-10-06 Nippon Telegraph And Telephone Corporation Digital signal encoding method, decoding method, encoding device, decoding device, digital signal encoding program, and decoding program
JP3960932B2 (ja) * 2002-03-08 2007-08-15 日本電信電話株式会社 ディジタル信号符号化方法、復号化方法、符号化装置、復号化装置及びディジタル信号符号化プログラム、復号化プログラム
EP1489599B1 (de) * 2002-04-26 2016-05-11 Panasonic Intellectual Property Corporation of America Kodierungseinrichtung und dekodierungseinrichtung
CA2388352A1 (en) * 2002-05-31 2003-11-30 Voiceage Corporation A method and device for frequency-selective pitch enhancement of synthesized speed
EP1570463A1 (de) * 2002-11-27 2005-09-07 Koninklijke Philips Electronics N.V. Sinusoidale audio-kodierung
US7433815B2 (en) * 2003-09-10 2008-10-07 Dilithium Networks Pty Ltd. Method and apparatus for voice transcoding between variable rate coders
US7478040B2 (en) * 2003-10-24 2009-01-13 Broadcom Corporation Method for adaptive filtering
US7394903B2 (en) * 2004-01-20 2008-07-01 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
JP4546464B2 (ja) * 2004-04-27 2010-09-15 パナソニック株式会社 スケーラブル符号化装置、スケーラブル復号化装置、およびこれらの方法
JP4771674B2 (ja) * 2004-09-02 2011-09-14 パナソニック株式会社 音声符号化装置、音声復号化装置及びこれらの方法
US7895035B2 (en) * 2004-09-06 2011-02-22 Panasonic Corporation Scalable decoding apparatus and method for concealing lost spectral parameters
US7305139B2 (en) * 2004-12-17 2007-12-04 Microsoft Corporation Reversible 2-dimensional pre-/post-filtering for lapped biorthogonal transform
CN102592604A (zh) * 2005-01-14 2012-07-18 松下电器产业株式会社 可扩展性解码装置及可扩展性解码方法
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
WO2006134992A1 (ja) * 2005-06-17 2006-12-21 Matsushita Electric Industrial Co., Ltd. ポストフィルタ、復号化装置及びポストフィルタ処理方法
CN101263554B (zh) * 2005-07-22 2011-12-28 法国电信公司 在比特率分级和带宽分级的音频解码中的比特率切换方法
FR2897733A1 (fr) * 2006-02-20 2007-08-24 France Telecom Procede de discrimination et d'attenuation fiabilisees des echos d'un signal numerique dans un decodeur et dispositif correspondant
US7873511B2 (en) * 2006-06-30 2011-01-18 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic

Also Published As

Publication number Publication date
US20100063801A1 (en) 2010-03-11
JP5255575B2 (ja) 2013-08-07
EP2132732A4 (de) 2010-12-15
CN101622667A (zh) 2010-01-06
CN101622667B (zh) 2012-08-15
US8571852B2 (en) 2013-10-29
EP2132732A1 (de) 2009-12-16
JP2010520504A (ja) 2010-06-10
EP2132732B1 (de) 2012-03-07
WO2008108701A1 (en) 2008-09-12

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