ES2067336T3 - Proceso para determinar el umbral de control global durante una codificacion de lenguaje original con reduccion de la tasa de bits - Google Patents
Proceso para determinar el umbral de control global durante una codificacion de lenguaje original con reduccion de la tasa de bitsInfo
- Publication number
- ES2067336T3 ES2067336T3 ES92916030T ES92916030T ES2067336T3 ES 2067336 T3 ES2067336 T3 ES 2067336T3 ES 92916030 T ES92916030 T ES 92916030T ES 92916030 T ES92916030 T ES 92916030T ES 2067336 T3 ES2067336 T3 ES 2067336T3
- Authority
- ES
- Spain
- Prior art keywords
- maskers
- sampling values
- pct
- coding
- requantizing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- H04B1/665—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 psychoacoustic properties of the ear, e.g. masking effect
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Time-Division Multiplex Systems (AREA)
- Communication Control (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Analogue/Digital Conversion (AREA)
- Machine Translation (AREA)
Abstract
CON EL FIN DE ENCONTRAR EL UMBRAL DE CONTROL GLOBAL (6) DURANTE UNA CODIFICACION DE LENGUAJE ORIGINAL CON REDUCCION DE LA TASA DE BITS DE SEÑALES DE AUDIO (1) DIGITALIZADAS, SE HALLA A PARTIR DEL EFECTO DE ENMASCARAMIENTO DE TODOS LOS ENMASCARADORES PERTINENTES Y ENMASCARADORES DE RUIDO (100, 200, 300), ASI COMO DEL UMBRAL DE AUDIO EN REPOSO (400), UNA ESPECIFICACION DE RECUANTIFICACION Y CODIFICACION PARA LOS VALORES DE EXPLORACION (2) TEMPORALES O ESPECTRALES DE LA SEÑAL DE AUDIO. PARA ELLO SE SEGMENTAN LOS FLANCOS DE ENMASCARAMIENTO (101, 102, 201, 202, 301, 302) DEL ENMASCARADOR SELECCIONADO EN CADA CASO Y SE APROXIMAN EN LOS SEGMENTOS INDIVIDUALES MEDIANTE POLINOMIOS DE ORDEN INFERIOR, PARA LO CUAL SE HALLAN LOS COEFICIENTES DE LOS POLINOMIOS DE ORDEN INFERIOR. PARA LA DETERMINACION DE LOS COEFICIENTES DE LOS POLINOMIOS DE ORDEN INFERIOR SE EMPLEAN LAS INTENSIDADES DE LOS ENMASCARADORES CONVERTIDAS EN NIVEL LOGARITMICO. EL UMBRAL DE CONTROL GLOBAL (6) ES HALLADO EN PUNTOS SOPORTE INDIVIDUALES O SELECCIONADOS, ENMASCARADOR POR ENMASCARADOR, A PARTIR DE LOS POLINOMIOS QUE DESCRIBEN LOS FLANCOS DE ENMASCARAMIENTO DE LOS ENMASCARADORES SELECCIONADOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4124493A DE4124493C1 (es) | 1991-07-24 | 1991-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2067336T3 true ES2067336T3 (es) | 1995-03-16 |
Family
ID=6436886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES92916030T Expired - Lifetime ES2067336T3 (es) | 1991-07-24 | 1992-07-21 | Proceso para determinar el umbral de control global durante una codificacion de lenguaje original con reduccion de la tasa de bits |
Country Status (11)
Country | Link |
---|---|
US (1) | US5740317A (es) |
EP (1) | EP0595944B1 (es) |
JP (1) | JP2599688B2 (es) |
KR (1) | KR100242893B1 (es) |
AT (1) | ATE115793T1 (es) |
AU (1) | AU652476B2 (es) |
CA (1) | CA2103147C (es) |
DE (2) | DE4124493C1 (es) |
DK (1) | DK0595944T3 (es) |
ES (1) | ES2067336T3 (es) |
WO (1) | WO1993002508A1 (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0172866B1 (ko) | 1994-07-06 | 1999-04-15 | 구자홍 | 음성 또는 영상신호의 저장/재생장치 |
SG135920A1 (en) * | 2003-03-07 | 2007-10-29 | St Microelectronics Asia | Device and process for use in encoding audio data |
KR101435411B1 (ko) * | 2007-09-28 | 2014-08-28 | 삼성전자주식회사 | 심리 음향 모델의 마스킹 효과에 따라 적응적으로 양자화간격을 결정하는 방법과 이를 이용한 오디오 신호의부호화/복호화 방법 및 그 장치 |
FR3074428B1 (fr) * | 2017-12-06 | 2022-01-21 | Ifp Energies Now | Procede de preparation d'un catalyseur a base d'izm-2 a partir d'une solution comprenant des precurseurs specifiques et utilisation pour l'isomerisation de charges paraffiniques |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8421498D0 (en) * | 1984-08-24 | 1984-09-26 | British Telecomm | Frequency domain speech coding |
US4862346A (en) * | 1985-07-02 | 1989-08-29 | Vlsi Technology, Inc. | Index for a register file with update of addresses using simultaneously received current, change, test, and reload addresses |
DE3639753A1 (de) * | 1986-11-21 | 1988-06-01 | Inst Rundfunktechnik Gmbh | Verfahren zum uebertragen digitalisierter tonsignale |
US4805193A (en) * | 1987-06-04 | 1989-02-14 | Motorola, Inc. | Protection of energy information in sub-band coding |
US5115240A (en) * | 1989-09-26 | 1992-05-19 | Sony Corporation | Method and apparatus for encoding voice signals divided into a plurality of frequency bands |
JPH03132700A (ja) * | 1989-10-18 | 1991-06-06 | Victor Co Of Japan Ltd | 音声の適応直交変換符号化方法 |
EP0525774B1 (en) * | 1991-07-31 | 1997-02-26 | Matsushita Electric Industrial Co., Ltd. | Digital audio signal coding system and method therefor |
-
1991
- 1991-07-24 DE DE4124493A patent/DE4124493C1/de not_active Expired - Fee Related
-
1992
- 1992-07-21 JP JP5502601A patent/JP2599688B2/ja not_active Expired - Lifetime
- 1992-07-21 DE DE59200994T patent/DE59200994D1/de not_active Expired - Lifetime
- 1992-07-21 ES ES92916030T patent/ES2067336T3/es not_active Expired - Lifetime
- 1992-07-21 KR KR1019930703645A patent/KR100242893B1/ko not_active IP Right Cessation
- 1992-07-21 AT AT92916030T patent/ATE115793T1/de active
- 1992-07-21 EP EP92916030A patent/EP0595944B1/de not_active Expired - Lifetime
- 1992-07-21 US US08/520,765 patent/US5740317A/en not_active Expired - Fee Related
- 1992-07-21 WO PCT/EP1992/001658 patent/WO1993002508A1/de active IP Right Grant
- 1992-07-21 CA CA002103147A patent/CA2103147C/en not_active Expired - Lifetime
- 1992-07-21 DK DK92916030.7T patent/DK0595944T3/da active
- 1992-07-21 AU AU23455/92A patent/AU652476B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ATE115793T1 (de) | 1994-12-15 |
AU652476B2 (en) | 1994-08-25 |
US5740317A (en) | 1998-04-14 |
DE59200994D1 (de) | 1995-01-26 |
CA2103147C (en) | 1998-09-22 |
JPH06504893A (ja) | 1994-06-02 |
JP2599688B2 (ja) | 1997-04-09 |
WO1993002508A1 (de) | 1993-02-04 |
AU2345592A (en) | 1993-02-23 |
DK0595944T3 (da) | 1995-05-08 |
DE4124493C1 (es) | 1993-02-11 |
EP0595944A1 (de) | 1994-05-11 |
KR100242893B1 (ko) | 2000-02-01 |
EP0595944B1 (de) | 1994-12-14 |
CA2103147A1 (en) | 1993-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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