FR2284946A1 - Vocodeur numerique - Google Patents
Vocodeur numeriqueInfo
- Publication number
- FR2284946A1 FR2284946A1 FR7527703A FR7527703A FR2284946A1 FR 2284946 A1 FR2284946 A1 FR 2284946A1 FR 7527703 A FR7527703 A FR 7527703A FR 7527703 A FR7527703 A FR 7527703A FR 2284946 A1 FR2284946 A1 FR 2284946A1
- Authority
- FR
- France
- Prior art keywords
- filter
- digital
- derived
- weighting coefficients
- speech
- 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.)
- Granted
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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/505,808 US3975587A (en) | 1974-09-13 | 1974-09-13 | Digital vocoder |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2284946A1 true FR2284946A1 (fr) | 1976-04-09 |
FR2284946B1 FR2284946B1 (fr) | 1979-08-24 |
Family
ID=24011929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7527703A Granted FR2284946A1 (fr) | 1974-09-13 | 1975-09-10 | Vocodeur numerique |
Country Status (2)
Country | Link |
---|---|
US (1) | US3975587A (fr) |
FR (1) | FR2284946A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2742568A1 (fr) * | 1995-12-15 | 1997-06-20 | Catherine Quinquis | Procede d'analyse par prediction lineaire d'un signal audiofrequence, et procedes de codage et de decodage d'un signal audiofrequence en comportant application |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6051720B2 (ja) * | 1975-08-22 | 1985-11-15 | 日本電信電話株式会社 | 音声の基本周期抽出装置 |
US4344148A (en) * | 1977-06-17 | 1982-08-10 | Texas Instruments Incorporated | System using digital filter for waveform or speech synthesis |
US4209836A (en) * | 1977-06-17 | 1980-06-24 | Texas Instruments Incorporated | Speech synthesis integrated circuit device |
US4209844A (en) * | 1977-06-17 | 1980-06-24 | Texas Instruments Incorporated | Lattice filter for waveform or speech synthesis circuits using digital logic |
US4220819A (en) * | 1979-03-30 | 1980-09-02 | Bell Telephone Laboratories, Incorporated | Residual excited predictive speech coding system |
US4304965A (en) * | 1979-05-29 | 1981-12-08 | Texas Instruments Incorporated | Data converter for a speech synthesizer |
US4330689A (en) * | 1980-01-28 | 1982-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Multirate digital voice communication processor |
US4310831A (en) * | 1980-02-04 | 1982-01-12 | Texas Instruments Incorporated | Pulse width modulated, push/pull digital to analog converter |
NL8005989A (nl) * | 1980-10-31 | 1982-05-17 | Nederlanden Staat | Inrichting voor digitale spraaksynthese voor meer kanalen met instelbare parameters. |
US4561102A (en) * | 1982-09-20 | 1985-12-24 | At&T Bell Laboratories | Pitch detector for speech analysis |
JPS5972494A (ja) * | 1982-10-19 | 1984-04-24 | 株式会社東芝 | 規則合成方式 |
JPS5979300A (ja) * | 1982-10-28 | 1984-05-08 | 電子計算機基本技術研究組合 | 認識装置 |
US4831551A (en) * | 1983-01-28 | 1989-05-16 | Texas Instruments Incorporated | Speaker-dependent connected speech word recognizer |
US4731846A (en) * | 1983-04-13 | 1988-03-15 | Texas Instruments Incorporated | Voice messaging system with pitch tracking based on adaptively filtered LPC residual signal |
US4783805A (en) * | 1984-12-05 | 1988-11-08 | Victor Company Of Japan, Ltd. | System for converting a voice signal to a pitch signal |
JPS62194296A (ja) * | 1986-02-21 | 1987-08-26 | 株式会社日立製作所 | 音声符号化方式 |
US5046100A (en) * | 1987-04-03 | 1991-09-03 | At&T Bell Laboratories | Adaptive multivariate estimating apparatus |
US5171930A (en) * | 1990-09-26 | 1992-12-15 | Synchro Voice Inc. | Electroglottograph-driven controller for a MIDI-compatible electronic music synthesizer device |
US5226084A (en) * | 1990-12-05 | 1993-07-06 | Digital Voice Systems, Inc. | Methods for speech quantization and error correction |
US5630011A (en) * | 1990-12-05 | 1997-05-13 | Digital Voice Systems, Inc. | Quantization of harmonic amplitudes representing speech |
US5517511A (en) * | 1992-11-30 | 1996-05-14 | Digital Voice Systems, Inc. | Digital transmission of acoustic signals over a noisy communication channel |
US5715365A (en) * | 1994-04-04 | 1998-02-03 | Digital Voice Systems, Inc. | Estimation of excitation parameters |
AU696092B2 (en) * | 1995-01-12 | 1998-09-03 | Digital Voice Systems, Inc. | Estimation of excitation parameters |
US5754974A (en) * | 1995-02-22 | 1998-05-19 | Digital Voice Systems, Inc | Spectral magnitude representation for multi-band excitation speech coders |
US5701390A (en) * | 1995-02-22 | 1997-12-23 | Digital Voice Systems, Inc. | Synthesis of MBE-based coded speech using regenerated phase information |
US6154499A (en) * | 1996-10-21 | 2000-11-28 | Comsat Corporation | Communication systems using nested coder and compatible channel coding |
US6161089A (en) * | 1997-03-14 | 2000-12-12 | Digital Voice Systems, Inc. | Multi-subframe quantization of spectral parameters |
US6131084A (en) * | 1997-03-14 | 2000-10-10 | Digital Voice Systems, Inc. | Dual subframe quantization of spectral magnitudes |
US6199037B1 (en) | 1997-12-04 | 2001-03-06 | Digital Voice Systems, Inc. | Joint quantization of speech subframe voicing metrics and fundamental frequencies |
US6377916B1 (en) | 1999-11-29 | 2002-04-23 | Digital Voice Systems, Inc. | Multiband harmonic transform coder |
US7970607B2 (en) * | 2005-02-11 | 2011-06-28 | Clyde Holmes | Method and system for low bit rate voice encoding and decoding applicable for any reduced bandwidth requirements including wireless |
DE102005039621A1 (de) * | 2005-08-19 | 2007-03-01 | Micronas Gmbh | Verfahren und Vorrichtung zur adaptiven Reduktion von Rausch- und Hintergrundsignalen in einem sprachverarbeitenden System |
DE102007017254B4 (de) * | 2006-11-16 | 2009-06-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung zum Kodieren und Dekodieren |
CN112992123A (zh) * | 2021-03-05 | 2021-06-18 | 西安交通大学 | 一种语音特征提取电路及方法 |
DE102022204206A1 (de) | 2022-04-29 | 2023-11-02 | Benecke-Kaliko Aktiengesellschaft | Wässrige Dispersionen zur Herstellung von flammgeschützten geschäumten Folien und damit ausgerüsteten Verbundgebilden |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2206889A5 (fr) * | 1972-11-16 | 1974-06-07 | Rhone Poulenc Sa |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3327058A (en) * | 1963-11-08 | 1967-06-20 | Bell Telephone Labor Inc | Speech wave analyzer |
US3471648A (en) * | 1966-07-28 | 1969-10-07 | Bell Telephone Labor Inc | Vocoder utilizing companding to reduce background noise caused by quantizing errors |
US3631520A (en) * | 1968-08-19 | 1971-12-28 | Bell Telephone Labor Inc | Predictive coding of speech signals |
US3624302A (en) * | 1969-10-29 | 1971-11-30 | Bell Telephone Labor Inc | Speech analysis and synthesis by the use of the linear prediction of a speech wave |
US3750024A (en) * | 1971-06-16 | 1973-07-31 | Itt Corp Nutley | Narrow band digital speech communication system |
US3746791A (en) * | 1971-06-23 | 1973-07-17 | A Wolf | Speech synthesizer utilizing white noise |
US3715512A (en) * | 1971-12-20 | 1973-02-06 | Bell Telephone Labor Inc | Adaptive predictive speech signal coding system |
-
1974
- 1974-09-13 US US05/505,808 patent/US3975587A/en not_active Expired - Lifetime
-
1975
- 1975-09-10 FR FR7527703A patent/FR2284946A1/fr active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2206889A5 (fr) * | 1972-11-16 | 1974-06-07 | Rhone Poulenc Sa |
Non-Patent Citations (1)
Title |
---|
(NATIONAL TELECOMMUNICATIONS CONFERENCE, 26-28 NOVEMBRE 1973, ATLANTA, I.E.E.E., NEW YORK US, VOLUME 2, J.G. DUNN ET AL. "PROGRESS IN THE DEVELOPMENT OF A DIGITAL VOCADER EMPLOYING AN ITAKURA ADAPTIVE PREDICTOR", PAGES 29B-1-29B-6) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2742568A1 (fr) * | 1995-12-15 | 1997-06-20 | Catherine Quinquis | Procede d'analyse par prediction lineaire d'un signal audiofrequence, et procedes de codage et de decodage d'un signal audiofrequence en comportant application |
EP0782128A1 (fr) * | 1995-12-15 | 1997-07-02 | France Telecom | Procédé d'analyse par prédiction linéaire d'un signal audiofréquence, et procédés de codage et de décodage d'un signal audiofréquence en comportant application |
US5787390A (en) * | 1995-12-15 | 1998-07-28 | France Telecom | Method for linear predictive analysis of an audiofrequency signal, and method for coding and decoding an audiofrequency signal including application thereof |
Also Published As
Publication number | Publication date |
---|---|
FR2284946B1 (fr) | 1979-08-24 |
US3975587A (en) | 1976-08-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |