CA2026640A1 - Speech analysis-synthesis method and apparatus therefor - Google Patents
Speech analysis-synthesis method and apparatus thereforInfo
- Publication number
- CA2026640A1 CA2026640A1 CA2026640A CA2026640A CA2026640A1 CA 2026640 A1 CA2026640 A1 CA 2026640A1 CA 2026640 A CA2026640 A CA 2026640A CA 2026640 A CA2026640 A CA 2026640A CA 2026640 A1 CA2026640 A1 CA 2026640A1
- Authority
- CA
- Canada
- Prior art keywords
- impulse sequence
- speech
- quasi
- phase
- filter
- 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
- 238000001308 synthesis method Methods 0.000 title 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
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)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
An impulse sequence of a pitch frequency is detected from a phase-equalized prediction residual of an input speech signal, and a quasi-periodic impulse sequence is obtained by processing the impulse sequence so that a fluctuation in its pitch frequency is within an allowed limit range. The magnitudes of the quasi-periodic impulse sequence are so determined as to minimize an error between the waveform of a synthesized speech obtainable by exciting an all-pole filter with the quasi-periodic impulse sequence and the waveform of a phase-equalized speech obtainable by applying the input speech signal to a phase equalizing filter. Preferably, the quasi-periodic impulse sequence is supplied to the all-pole filter after being applied to a zero filter in which it is given features of the prediction residual of the speech. Coefficients of the zero filter are also determined so that the error of the waveforms of the synthesized speech and the phase-equalized speech is minimum.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP257503/89 | 1989-10-02 | ||
JP1257503A JPH0782360B2 (en) | 1989-10-02 | 1989-10-02 | Speech analysis and synthesis method |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2026640A1 true CA2026640A1 (en) | 1991-04-03 |
CA2026640C CA2026640C (en) | 1996-07-09 |
Family
ID=17307200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002026640A Expired - Fee Related CA2026640C (en) | 1989-10-02 | 1990-10-01 | Speech analysis-synthesis method and apparatus therefor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0421360B1 (en) |
JP (1) | JPH0782360B2 (en) |
CA (1) | CA2026640C (en) |
DE (1) | DE69024899T2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2741744B1 (en) * | 1995-11-23 | 1998-01-02 | Thomson Csf | METHOD AND DEVICE FOR EVALUATING THE ENERGY OF THE SPEAKING SIGNAL BY SUBBAND FOR LOW-FLOW VOCODER |
CN1252679C (en) | 1997-03-12 | 2006-04-19 | 三菱电机株式会社 | Voice encoder, voice decoder, voice encoder/decoder, voice encoding method, voice decoding method and voice encoding/decoding method |
US7072832B1 (en) | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
US6385573B1 (en) | 1998-08-24 | 2002-05-07 | Conexant Systems, Inc. | Adaptive tilt compensation for synthesized speech residual |
JP4999757B2 (en) * | 2008-03-31 | 2012-08-15 | 日本電信電話株式会社 | Speech analysis / synthesis apparatus, speech analysis / synthesis method, computer program, and recording medium |
JP5325130B2 (en) * | 2010-01-25 | 2013-10-23 | 日本電信電話株式会社 | LPC analysis device, LPC analysis method, speech analysis / synthesis device, speech analysis / synthesis method, and program |
CN108281150B (en) * | 2018-01-29 | 2020-11-17 | 上海泰亿格康复医疗科技股份有限公司 | Voice tone-changing voice-changing method based on differential glottal wave model |
CN113066476B (en) * | 2019-12-13 | 2024-05-31 | 科大讯飞股份有限公司 | Synthetic voice processing method and related device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0163829B1 (en) * | 1984-03-21 | 1989-08-23 | Nippon Telegraph And Telephone Corporation | Speech signal processing system |
-
1989
- 1989-10-02 JP JP1257503A patent/JPH0782360B2/en not_active Expired - Lifetime
-
1990
- 1990-10-01 CA CA002026640A patent/CA2026640C/en not_active Expired - Fee Related
- 1990-10-02 EP EP90118888A patent/EP0421360B1/en not_active Expired - Lifetime
- 1990-10-02 DE DE69024899T patent/DE69024899T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0421360A2 (en) | 1991-04-10 |
DE69024899D1 (en) | 1996-02-29 |
JPH03119398A (en) | 1991-05-21 |
EP0421360A3 (en) | 1991-12-27 |
EP0421360B1 (en) | 1996-01-17 |
DE69024899T2 (en) | 1996-07-04 |
CA2026640C (en) | 1996-07-09 |
JPH0782360B2 (en) | 1995-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2010830C (en) | Dynamic codebook for efficient speech coding based on algebraic codes | |
EP0731449A3 (en) | Method for the modification of PLC coefficients of acoustic signals | |
AU580218B2 (en) | Digital speech vocoder | |
EP0714089A3 (en) | Code-excited linear predictive coder and decoder with conversion filter for converting stochastic and impulse excitation signals | |
CA2179228A1 (en) | Method and apparatus for reproducing speech signals and method for transmitting same | |
CA2160749A1 (en) | Speech Coding Apparatus, Speech Decoding Apparatus, Speech Coding and Decoding Method and a Phase Amplitude Characteristic Extracting Apparatus for Carrying Out the Method | |
KR880004425A (en) | Voice processing system and voice processing method | |
GB2110906A (en) | Processing sequential patterns | |
CA2169822A1 (en) | Synthesis of speech using regenerated phase information | |
CA2099655A1 (en) | Speech encoding | |
CA2032520A1 (en) | Excitation pulse positioning method in a linear predictive speech coder | |
CA2098629A1 (en) | Speech recognition method using time-frequency masking mechanism | |
CA2193577A1 (en) | Coding of a speech or music signal with quantization of harmonics components specifically and then residue components | |
CA2026640A1 (en) | Speech analysis-synthesis method and apparatus therefor | |
CA2154881A1 (en) | A system and method for compression and decompression of audio signals | |
US6219637B1 (en) | Speech coding/decoding using phase spectrum corresponding to a transfer function having at least one pole outside the unit circle | |
CA2132006A1 (en) | Method for Generating a Spectral Noise Weighting Filter for Use in a Speech Coder | |
CA2090205A1 (en) | Speech coding system | |
CA2232977A1 (en) | Speech signal coder | |
NO914105L (en) | PROCEDURE AND DEVICE FOR CODING AND DECODING ANALOGUE SIGNALS | |
ATE42853T1 (en) | METHOD AND DEVICE FOR ENCODING DIGITAL SIGNALS. | |
CA2065451A1 (en) | Method of coding a sampled speech signal vector | |
Grau et al. | A speech formant synthesizer based on harmonic+ random formant-waveforms representations. | |
CA2019801A1 (en) | System for speech coding and an apparatus for the same | |
GB9307716D0 (en) | Method & apparatus for generating harmonic accompaniment to the fundamental frequency of an input tonal waveform |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |