TW200515371A - Method and system improving step adaptation of ADPCM voice coding - Google Patents
Method and system improving step adaptation of ADPCM voice codingInfo
- Publication number
- TW200515371A TW200515371A TW092128759A TW92128759A TW200515371A TW 200515371 A TW200515371 A TW 200515371A TW 092128759 A TW092128759 A TW 092128759A TW 92128759 A TW92128759 A TW 92128759A TW 200515371 A TW200515371 A TW 200515371A
- Authority
- TW
- Taiwan
- Prior art keywords
- voice coding
- system improving
- adpcm voice
- improving step
- step adaptation
- 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
- G10L19/032—Quantisation or dequantisation of spectral components
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW092128759A TWI226035B (en) | 2003-10-16 | 2003-10-16 | Method and system improving step adaptation of ADPCM voice coding |
US10/964,658 US20050086054A1 (en) | 2003-10-16 | 2004-10-15 | ADPCM encoding and decoding method and system with improved step size adaptation thereof |
US12/003,863 US20080109219A1 (en) | 2003-10-16 | 2008-01-03 | ADPCM encoding and decoding method and system with improved step size adaptation thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW092128759A TWI226035B (en) | 2003-10-16 | 2003-10-16 | Method and system improving step adaptation of ADPCM voice coding |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI226035B TWI226035B (en) | 2005-01-01 |
TW200515371A true TW200515371A (en) | 2005-05-01 |
Family
ID=34511685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW092128759A TWI226035B (en) | 2003-10-16 | 2003-10-16 | Method and system improving step adaptation of ADPCM voice coding |
Country Status (2)
Country | Link |
---|---|
US (2) | US20050086054A1 (zh) |
TW (1) | TWI226035B (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7974713B2 (en) | 2005-10-12 | 2011-07-05 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Temporal and spatial shaping of multi-channel audio signals |
US8203260B2 (en) * | 2007-04-13 | 2012-06-19 | Intematix Corporation | Color temperature tunable white light source |
US7703943B2 (en) * | 2007-05-07 | 2010-04-27 | Intematix Corporation | Color tunable light source |
TWI491179B (zh) * | 2009-06-24 | 2015-07-01 | Hon Hai Prec Ind Co Ltd | 編碼調制系統及方法 |
CN110895930B (zh) * | 2015-05-25 | 2022-01-28 | 展讯通信(上海)有限公司 | 语音识别方法及装置 |
US11545164B2 (en) * | 2017-06-19 | 2023-01-03 | Rtx A/S | Audio signal encoding and decoding |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US6370669B1 (en) * | 1998-01-23 | 2002-04-09 | Hughes Electronics Corporation | Sets of rate-compatible universal turbo codes nearly optimized over various rates and interleaver sizes |
US20020041678A1 (en) * | 2000-08-18 | 2002-04-11 | Filiz Basburg-Ertem | Method and apparatus for integrated echo cancellation and noise reduction for fixed subscriber terminals |
ATE323935T1 (de) * | 2001-04-09 | 2006-05-15 | Koninkl Philips Electronics Nv | Adpcm sprachkodiersystem mit phasenfaltungs und - entfaltungsfiltern |
US20040083093A1 (en) * | 2002-10-25 | 2004-04-29 | Guo-She Lee | Method of measuring nasality by means of a frequency ratio |
-
2003
- 2003-10-16 TW TW092128759A patent/TWI226035B/zh not_active IP Right Cessation
-
2004
- 2004-10-15 US US10/964,658 patent/US20050086054A1/en not_active Abandoned
-
2008
- 2008-01-03 US US12/003,863 patent/US20080109219A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
TWI226035B (en) | 2005-01-01 |
US20080109219A1 (en) | 2008-05-08 |
US20050086054A1 (en) | 2005-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU682926B2 (en) | Process for coding a plurality of audio signals | |
RU2369917C2 (ru) | Способы улучшения характеристик многоканальной реконструкции на основе прогнозирования | |
CN101939782B (zh) | 噪声填充与带宽扩展之间的自适应过渡频率 | |
JP2009500658A5 (zh) | ||
WO2005034080A3 (en) | A method of making a window type decision based on mdct data in audio encoding | |
DK1590801T3 (da) | Konvertering af syntetiserede spektralkomponenter for kodning og transkodning med lav komplicerethed | |
MX2009004427A (es) | Metodo y dispositivo para codificar cuadros de transicion en señales de habla. | |
DE60317203D1 (de) | Audio-kodierung | |
WO2008022184A3 (en) | Constrained and controlled decoding after packet loss | |
HK1163911A1 (zh) | 多聲道音頻信號表示方法 | |
TW200703234A (en) | Frame erasure concealment in voice communications | |
ATE305655T1 (de) | Vorrichtung und verfahren zum codieren eines zeitdiskreten audiosignals und vorrichtung und verfahren zum decodieren von codierten audiodaten | |
DE60125219D1 (de) | Spektralmerkmal ersatz für die verschleierung von rahmenfehlern in einem sprachdekoder | |
TW200611240A (en) | Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering | |
EP2936486B1 (en) | Comfort noise addition for modeling background noise at low bit-rates | |
KR20040005860A (ko) | 음성 통신에서의 위로 잡음 생성 방법 및 시스템 | |
WO2005093717A8 (en) | Synthesizing a mono audio signal based on an encoded miltichannel audio signal | |
ATE456128T1 (de) | Qualitätsverbesserung eines audiosignals im kodierbereich | |
JP2006502427A5 (zh) | ||
RU2461080C2 (ru) | Способ и средство для кодирования информации фонового шума | |
WO2006055975A3 (en) | Account data reconciliation | |
US20110301962A1 (en) | Stereo encoding method and apparatus | |
US20130166287A1 (en) | Adaptively Encoding Pitch Lag For Voiced Speech | |
TW200515371A (en) | Method and system improving step adaptation of ADPCM voice coding | |
CN102063905A (zh) | 一种用于音频解码的盲噪声填充方法及其装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |