MX9603122A - Prediccion lineal excitada por rafaga. - Google Patents
Prediccion lineal excitada por rafaga.Info
- Publication number
- MX9603122A MX9603122A MX9603122A MX9603122A MX9603122A MX 9603122 A MX9603122 A MX 9603122A MX 9603122 A MX9603122 A MX 9603122A MX 9603122 A MX9603122 A MX 9603122A MX 9603122 A MX9603122 A MX 9603122A
- Authority
- MX
- Mexico
- Prior art keywords
- burst
- residual
- waveform
- parameters
- residual signal
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000003786 synthesis reaction Methods 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 1
- 230000002123 temporal effect Effects 0.000 abstract 1
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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- 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
- G10L2019/0001—Codebooks
- G10L2019/0013—Codebook search algorithms
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)
- Stereo-Broadcasting Methods (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Radar Systems Or Details Thereof (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Luminescent Compositions (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Steroid Compounds (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Pyrane Compounds (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Semiconductor Lasers (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Eletrric Generators (AREA)
- Amplifiers (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Un aparato novedoso y mejorado para codificar una señal que es de naturaleza explosiva. En un algoritmo de prediccion lineal excitado por codigo, las redundancias a corto plazo y las redundancias a largo plazo se retiran de la voz mostrada de manera digital, y debe codificarse la señal residual que es de naturaleza explosiva. La señal residual se codifica utilizando tres parámetros, un índice de forma de ráfaga correspondiente a una forma de ráfaga en un codigo de cifrado y descifrado de formas de ráfaga, una ganancia de ráfaga, y una ubicacion de ráfaga. Los tres parámetros juntos especifican una forma de onda para compararse con la señal residual. Se expone además un método de busqueda exhaustiva de ciclo cerrado para encontrar la mejor concordancia con la forma de onda residual y un método de ciclo parcialmente abierto en donde la ubicacion de ráfaga se determina mediante un análisis de ciclo abierto de la forma de onda residual, y la forma de ráfaga y los parámetros de ganancia se determinan en una manera de ciclo cerrado. También se exponen métodos mediante los cuales puede proporcionarse un codigo de cifrado y descifrado de vector de ráfaga, que puede dar como resultado una complejidad computacional reducida en la busqueda de algoritmos que incluyen un codigo de cifrado y descifrado de ráfaga recurrente y un codigo de cifrado y descifrado estructurado de tal manera que los miembros del codigo de cifrado y descifrado son combinaciones lineales de los otros miembros del codigo de cifrado y descifrado.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18981494A | 1994-02-01 | 1994-02-01 | |
PCT/US1995/001341 WO1995021443A1 (en) | 1994-02-01 | 1995-02-01 | Burst excited linear prediction |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9603122A true MX9603122A (es) | 1997-03-29 |
Family
ID=22698876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9603122A MX9603122A (es) | 1994-02-01 | 1995-02-01 | Prediccion lineal excitada por rafaga. |
Country Status (17)
Country | Link |
---|---|
US (1) | US5621853A (es) |
EP (1) | EP0744069B1 (es) |
JP (1) | JPH09508479A (es) |
KR (1) | KR100323487B1 (es) |
CN (1) | CN1139988A (es) |
AT (1) | ATE218741T1 (es) |
AU (1) | AU693519B2 (es) |
BR (1) | BR9506574A (es) |
CA (1) | CA2181456A1 (es) |
DE (1) | DE69526926T2 (es) |
DK (1) | DK0744069T3 (es) |
ES (1) | ES2177631T3 (es) |
FI (1) | FI962968A (es) |
HK (1) | HK1011108A1 (es) |
MX (1) | MX9603122A (es) |
PT (1) | PT744069E (es) |
WO (1) | WO1995021443A1 (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5963897A (en) * | 1998-02-27 | 1999-10-05 | Lernout & Hauspie Speech Products N.V. | Apparatus and method for hybrid excited linear prediction speech encoding |
US6182030B1 (en) | 1998-12-18 | 2001-01-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Enhanced coding to improve coded communication signals |
WO2005055193A1 (en) * | 2003-12-02 | 2005-06-16 | Thomson Licensing | Method for coding and decoding impulse responses of audio signals |
US8920343B2 (en) | 2006-03-23 | 2014-12-30 | Michael Edward Sabatino | Apparatus for acquiring and processing of physiological auditory signals |
US9245529B2 (en) | 2009-06-18 | 2016-01-26 | Texas Instruments Incorporated | Adaptive encoding of a digital signal with one or more missing values |
US10121481B2 (en) * | 2011-03-04 | 2018-11-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Post-quantization gain correction in audio coding |
TR201808890T4 (tr) * | 2013-06-21 | 2018-07-23 | Fraunhofer Ges Forschung | Bir konuşma çerçevesinin yeniden yapılandırılması. |
CA2915805C (en) * | 2013-06-21 | 2021-10-19 | Jeremie Lecomte | Apparatus and method for improved concealment of the adaptive codebook in acelp-like concealment employing improved pitch lag estimation |
EP3079151A1 (en) * | 2015-04-09 | 2016-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder and method for encoding an audio signal |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4191853A (en) * | 1978-10-10 | 1980-03-04 | Motorola Inc. | Sampled data filter with time shared weighters for use as an LPC and synthesizer |
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
JP3102015B2 (ja) * | 1990-05-28 | 2000-10-23 | 日本電気株式会社 | 音声復号化方法 |
US5138661A (en) * | 1990-11-13 | 1992-08-11 | General Electric Company | Linear predictive codeword excited speech synthesizer |
US5233660A (en) * | 1991-09-10 | 1993-08-03 | At&T Bell Laboratories | Method and apparatus for low-delay celp speech coding and decoding |
SE469764B (sv) * | 1992-01-27 | 1993-09-06 | Ericsson Telefon Ab L M | Saett att koda en samplad talsignalvektor |
US5495555A (en) * | 1992-06-01 | 1996-02-27 | Hughes Aircraft Company | High quality low bit rate celp-based speech codec |
US5353374A (en) * | 1992-10-19 | 1994-10-04 | Loral Aerospace Corporation | Low bit rate voice transmission for use in a noisy environment |
US5341456A (en) * | 1992-12-02 | 1994-08-23 | Qualcomm Incorporated | Method for determining speech encoding rate in a variable rate vocoder |
-
1995
- 1995-02-01 EP EP95909433A patent/EP0744069B1/en not_active Expired - Lifetime
- 1995-02-01 MX MX9603122A patent/MX9603122A/es unknown
- 1995-02-01 CA CA002181456A patent/CA2181456A1/en not_active Abandoned
- 1995-02-01 PT PT95909433T patent/PT744069E/pt unknown
- 1995-02-01 AT AT95909433T patent/ATE218741T1/de not_active IP Right Cessation
- 1995-02-01 WO PCT/US1995/001341 patent/WO1995021443A1/en active IP Right Grant
- 1995-02-01 JP JP7520734A patent/JPH09508479A/ja active Pending
- 1995-02-01 DK DK95909433T patent/DK0744069T3/da active
- 1995-02-01 CN CN95191398A patent/CN1139988A/zh active Pending
- 1995-02-01 ES ES95909433T patent/ES2177631T3/es not_active Expired - Lifetime
- 1995-02-01 KR KR1019960704137A patent/KR100323487B1/ko not_active IP Right Cessation
- 1995-02-01 AU AU17398/95A patent/AU693519B2/en not_active Ceased
- 1995-02-01 BR BR9506574A patent/BR9506574A/pt not_active Application Discontinuation
- 1995-02-01 DE DE69526926T patent/DE69526926T2/de not_active Expired - Lifetime
- 1995-09-18 US US08/529,374 patent/US5621853A/en not_active Expired - Lifetime
-
1996
- 1996-07-25 FI FI962968A patent/FI962968A/fi unknown
-
1998
- 1998-08-21 HK HK98110088A patent/HK1011108A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1139988A (zh) | 1997-01-08 |
DE69526926D1 (de) | 2002-07-11 |
HK1011108A1 (en) | 1999-07-02 |
BR9506574A (pt) | 1997-09-23 |
AU1739895A (en) | 1995-08-21 |
DK0744069T3 (da) | 2002-10-07 |
ATE218741T1 (de) | 2002-06-15 |
ES2177631T3 (es) | 2002-12-16 |
FI962968A0 (fi) | 1996-07-25 |
US5621853A (en) | 1997-04-15 |
DE69526926T2 (de) | 2003-01-02 |
EP0744069B1 (en) | 2002-06-05 |
EP0744069A1 (en) | 1996-11-27 |
KR100323487B1 (ko) | 2002-07-08 |
WO1995021443A1 (en) | 1995-08-10 |
FI962968A (fi) | 1996-09-24 |
CA2181456A1 (en) | 1995-08-10 |
AU693519B2 (en) | 1998-07-02 |
PT744069E (pt) | 2002-10-31 |
JPH09508479A (ja) | 1997-08-26 |
KR970700902A (ko) | 1997-02-12 |
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