DE602004007593D1 - Verfahren zur adaptiven Filterung - Google Patents
Verfahren zur adaptiven FilterungInfo
- Publication number
- DE602004007593D1 DE602004007593D1 DE602004007593T DE602004007593T DE602004007593D1 DE 602004007593 D1 DE602004007593 D1 DE 602004007593D1 DE 602004007593 T DE602004007593 T DE 602004007593T DE 602004007593 T DE602004007593 T DE 602004007593T DE 602004007593 D1 DE602004007593 D1 DE 602004007593D1
- Authority
- DE
- Germany
- Prior art keywords
- adaptive filtering
- adaptive
- filtering
- 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.)
- Active
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
- G10L19/04—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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51374103P | 2003-10-24 | 2003-10-24 | |
US513741P | 2003-10-24 | ||
US51571203P | 2003-10-31 | 2003-10-31 | |
US515712P | 2003-10-31 | ||
US10/968,333 US7478040B2 (en) | 2003-10-24 | 2004-10-20 | Method for adaptive filtering |
US968333P | 2004-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE602004007593D1 true DE602004007593D1 (de) | 2007-08-30 |
DE602004007593T2 DE602004007593T2 (de) | 2008-04-10 |
Family
ID=34527945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE602004007593T Active DE602004007593T2 (de) | 2003-10-24 | 2004-10-25 | Verfahren zur adaptiven Filterung |
Country Status (3)
Country | Link |
---|---|
US (1) | US7478040B2 (de) |
EP (1) | EP1526509B1 (de) |
DE (1) | DE602004007593T2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8473286B2 (en) * | 2004-02-26 | 2013-06-25 | Broadcom Corporation | Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure |
JP4827675B2 (ja) * | 2006-09-25 | 2011-11-30 | 三洋電機株式会社 | 低周波帯域音声復元装置、音声信号処理装置および録音機器 |
US20100010810A1 (en) * | 2006-12-13 | 2010-01-14 | Panasonic Corporation | Post filter and filtering method |
EP2132732B1 (de) * | 2007-03-02 | 2012-03-07 | Telefonaktiebolaget LM Ericsson (publ) | Nachfilter für geschichtete codecs |
WO2008108702A1 (en) * | 2007-03-02 | 2008-09-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Non-causal postfilter |
US8386246B2 (en) * | 2007-06-27 | 2013-02-26 | Broadcom Corporation | Low-complexity frame erasure concealment |
WO2009037852A1 (ja) * | 2007-09-21 | 2009-03-26 | Panasonic Corporation | 通信端末装置、通信システムおよび通信方法 |
EP3605534B1 (de) | 2010-07-02 | 2021-10-20 | Dolby International AB | Audiodekodierung mit selektiver nachfiltrierung |
WO2013124712A1 (en) * | 2012-02-24 | 2013-08-29 | Nokia Corporation | Noise adaptive post filtering |
US9026451B1 (en) * | 2012-05-09 | 2015-05-05 | Google Inc. | Pitch post-filter |
KR101748517B1 (ko) * | 2014-07-28 | 2017-06-16 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 제 1 인코딩 알고리즘 및 고조파 감소를 이용하는 제 2 인코딩 알고리즘 중 하나를 선택하기 위한 장치 및 방법 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5233660A (en) * | 1991-09-10 | 1993-08-03 | At&T Bell Laboratories | Method and apparatus for low-delay celp speech coding and decoding |
JP3510643B2 (ja) * | 1993-01-07 | 2004-03-29 | 株式会社東芝 | 音声信号のピッチ周期処理方法 |
US5615298A (en) | 1994-03-14 | 1997-03-25 | Lucent Technologies Inc. | Excitation signal synthesis during frame erasure or packet loss |
US5864798A (en) * | 1995-09-18 | 1999-01-26 | Kabushiki Kaisha Toshiba | Method and apparatus for adjusting a spectrum shape of a speech signal |
FI980132A (fi) * | 1998-01-21 | 1999-07-22 | Nokia Mobile Phones Ltd | Adaptoituva jälkisuodatin |
US6381570B2 (en) * | 1999-02-12 | 2002-04-30 | Telogy Networks, Inc. | Adaptive two-threshold method for discriminating noise from speech in a communication signal |
AUPQ161099A0 (en) * | 1999-07-13 | 1999-08-05 | Cochlear Limited | Multirate cochlear stimulation strategy and apparatus |
US6941263B2 (en) | 2001-06-29 | 2005-09-06 | Microsoft Corporation | Frequency domain postfiltering for quality enhancement of coded speech |
US7353168B2 (en) * | 2001-10-03 | 2008-04-01 | Broadcom Corporation | Method and apparatus to eliminate discontinuities in adaptively filtered signals |
-
2004
- 2004-10-20 US US10/968,333 patent/US7478040B2/en active Active
- 2004-10-25 DE DE602004007593T patent/DE602004007593T2/de active Active
- 2004-10-25 EP EP04025312A patent/EP1526509B1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050091046A1 (en) | 2005-04-28 |
US7478040B2 (en) | 2009-01-13 |
EP1526509A3 (de) | 2005-05-25 |
EP1526509B1 (de) | 2007-07-18 |
EP1526509A2 (de) | 2005-04-27 |
DE602004007593T2 (de) | 2008-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Representative=s name: BOSCH JEHLE PATENTANWALTSGESELLSCHAFT MBH, 80639 M |