ATE322734T1 - Audio kodierer mit unregelmässiger filterbank - Google Patents
Audio kodierer mit unregelmässiger filterbankInfo
- Publication number
- ATE322734T1 ATE322734T1 AT02755519T AT02755519T ATE322734T1 AT E322734 T1 ATE322734 T1 AT E322734T1 AT 02755519 T AT02755519 T AT 02755519T AT 02755519 T AT02755519 T AT 02755519T AT E322734 T1 ATE322734 T1 AT E322734T1
- Authority
- AT
- Austria
- Prior art keywords
- filter bank
- filters
- segmentation
- combined
- group
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
- G10L19/0208—Subband vocoders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01203161 | 2001-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE322734T1 true ATE322734T1 (de) | 2006-04-15 |
Family
ID=8180810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT02755519T ATE322734T1 (de) | 2001-08-21 | 2002-08-14 | Audio kodierer mit unregelmässiger filterbank |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040254797A1 (de) |
EP (1) | EP1421579B1 (de) |
JP (1) | JP2005501277A (de) |
CN (1) | CN1223992C (de) |
AT (1) | ATE322734T1 (de) |
DE (1) | DE60210479T2 (de) |
WO (1) | WO2003019532A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7778196B2 (en) * | 2005-05-31 | 2010-08-17 | Avaya Inc. | Method and apparatus for link performance measurements in a packet-switched network |
DK1750483T3 (da) | 2005-08-02 | 2011-02-21 | Gn Resound As | Høreapparat med vindstøjsundertrykkelse |
EP1999747B1 (de) * | 2006-03-29 | 2016-10-12 | Koninklijke Philips N.V. | Dekodierung von audiosignalen |
TWI559680B (zh) * | 2009-02-18 | 2016-11-21 | 杜比國際公司 | 低延遲調變濾波器組及用以設計該低延遲調變濾波器組之方法 |
WO2011047887A1 (en) * | 2009-10-21 | 2011-04-28 | Dolby International Ab | Oversampling in a combined transposer filter bank |
US10158375B1 (en) | 2018-03-21 | 2018-12-18 | Nxp Usa, Inc. | PDM bitstream to PCM data converter using Walsh-Hadamard transform |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4790016A (en) * | 1985-11-14 | 1988-12-06 | Gte Laboratories Incorporated | Adaptive method and apparatus for coding speech |
US4754492A (en) * | 1985-06-03 | 1988-06-28 | Picturetel Corporation | Method and system for adapting a digitized signal processing system for block processing with minimal blocking artifacts |
US5109417A (en) * | 1989-01-27 | 1992-04-28 | Dolby Laboratories Licensing Corporation | Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
DE3902948A1 (de) * | 1989-02-01 | 1990-08-09 | Telefunken Fernseh & Rundfunk | Verfahren zur uebertragung eines signals |
US5502789A (en) * | 1990-03-07 | 1996-03-26 | Sony Corporation | Apparatus for encoding digital data with reduction of perceptible noise |
US5285498A (en) * | 1992-03-02 | 1994-02-08 | At&T Bell Laboratories | Method and apparatus for coding audio signals based on perceptual model |
US5913186A (en) * | 1996-03-25 | 1999-06-15 | Prometheus, Inc. | Discrete one dimensional signal processing apparatus and method using energy spreading coding |
US5805739A (en) * | 1996-04-02 | 1998-09-08 | Picturetel Corporation | Lapped orthogonal vector quantization |
US5848391A (en) * | 1996-07-11 | 1998-12-08 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Method subband of coding and decoding audio signals using variable length windows |
US6115689A (en) * | 1998-05-27 | 2000-09-05 | Microsoft Corporation | Scalable audio coder and decoder |
-
2002
- 2002-08-14 EP EP02755519A patent/EP1421579B1/de not_active Expired - Lifetime
- 2002-08-14 WO PCT/IB2002/003316 patent/WO2003019532A1/en active IP Right Grant
- 2002-08-14 AT AT02755519T patent/ATE322734T1/de not_active IP Right Cessation
- 2002-08-14 CN CNB028162773A patent/CN1223992C/zh not_active Expired - Fee Related
- 2002-08-14 JP JP2003522909A patent/JP2005501277A/ja active Pending
- 2002-08-14 US US10/487,164 patent/US20040254797A1/en not_active Abandoned
- 2002-08-14 DE DE60210479T patent/DE60210479T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE60210479T2 (de) | 2007-04-12 |
JP2005501277A (ja) | 2005-01-13 |
WO2003019532A1 (en) | 2003-03-06 |
US20040254797A1 (en) | 2004-12-16 |
DE60210479D1 (de) | 2006-05-18 |
EP1421579B1 (de) | 2006-04-05 |
EP1421579A1 (de) | 2004-05-26 |
CN1223992C (zh) | 2005-10-19 |
CN1545697A (zh) | 2004-11-10 |
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Legal Events
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RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |