BE677136A - Methods and devices for performing filtering controlled by excitation of channel voltages in voice coding systems - Google Patents
Methods and devices for performing filtering controlled by excitation of channel voltages in voice coding systemsInfo
- Publication number
- BE677136A BE677136A BE677136DA BE677136A BE 677136 A BE677136 A BE 677136A BE 677136D A BE677136D A BE 677136DA BE 677136 A BE677136 A BE 677136A
- Authority
- BE
- Belgium
- Prior art keywords
- excitation
- methods
- devices
- voice coding
- coding systems
- Prior art date
Links
- 230000005284 excitation Effects 0.000 title 1
- 238000001914 filtration Methods 0.000 title 1
- 238000000034 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
- G10L19/02—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Meter Arrangements (AREA)
- Machine Translation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT275665A AT251656B (en) | 1965-03-25 | 1965-03-25 | Processes and arrangements for improving the speech quality in vocoder systems |
Publications (1)
Publication Number | Publication Date |
---|---|
BE677136A true BE677136A (en) | 1966-07-18 |
Family
ID=3539787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE677136D BE677136A (en) | 1965-03-25 | 1966-02-28 | Methods and devices for performing filtering controlled by excitation of channel voltages in voice coding systems |
Country Status (10)
Country | Link |
---|---|
US (1) | US3431355A (en) |
AT (1) | AT251656B (en) |
BE (1) | BE677136A (en) |
CH (1) | CH443413A (en) |
DE (1) | DE1276740B (en) |
ES (1) | ES324621A1 (en) |
FR (1) | FR1471628A (en) |
GB (1) | GB1073203A (en) |
NL (1) | NL146672B (en) |
SE (1) | SE323721B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL84948A0 (en) * | 1987-12-25 | 1988-06-30 | D S P Group Israel Ltd | Noise reduction system |
DE69317802T2 (en) * | 1992-01-21 | 1998-10-22 | Koninkl Philips Electronics Nv | Method and device for sound enhancement using encapsulation of multiband pass filtered signals in comb filters |
US5768473A (en) * | 1995-01-30 | 1998-06-16 | Noise Cancellation Technologies, Inc. | Adaptive speech filter |
US6108610A (en) * | 1998-10-13 | 2000-08-22 | Noise Cancellation Technologies, Inc. | Method and system for updating noise estimates during pauses in an information signal |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3012098A (en) * | 1941-11-22 | 1961-12-05 | Bell Telephone Labor Inc | Telephone privacy |
US2810787A (en) * | 1952-05-22 | 1957-10-22 | Itt | Compressed frequency communication system |
US3102928A (en) * | 1960-12-23 | 1963-09-03 | Bell Telephone Labor Inc | Vocoder excitation generator |
US3261916A (en) * | 1962-11-16 | 1966-07-19 | Ibm | Adjustable recognition system |
-
1965
- 1965-03-25 AT AT275665A patent/AT251656B/en active
- 1965-04-05 US US445563A patent/US3431355A/en not_active Expired - Lifetime
-
1966
- 1966-02-28 BE BE677136D patent/BE677136A/en unknown
- 1966-03-07 CH CH323466A patent/CH443413A/en unknown
- 1966-03-08 NL NL666602974A patent/NL146672B/en unknown
- 1966-03-11 DE DEJ30298A patent/DE1276740B/en not_active Withdrawn
- 1966-03-15 GB GB11188/66A patent/GB1073203A/en not_active Expired
- 1966-03-17 FR FR53804A patent/FR1471628A/en not_active Expired
- 1966-03-24 ES ES0324621A patent/ES324621A1/en not_active Expired
- 1966-03-25 SE SE4042/66A patent/SE323721B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
ES324621A1 (en) | 1967-02-01 |
AT251656B (en) | 1967-01-10 |
US3431355A (en) | 1969-03-04 |
NL146672B (en) | 1975-07-15 |
NL6602974A (en) | 1966-09-26 |
CH443413A (en) | 1967-09-15 |
DE1276740B (en) | 1968-09-05 |
SE323721B (en) | 1970-05-11 |
FR1471628A (en) | 1967-03-03 |
GB1073203A (en) | 1967-06-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR1504162A (en) | Device for arresting criminals using electroshock | |
AT256653B (en) | Device for holding liquids | |
FR1352825A (en) | Improvements in methods and devices for the identification and reproduction of documents | |
FR1471628A (en) | Methods and devices for performing filtering controlled by excitation of channel voltages in voice coding systems | |
FR1358438A (en) | Improvements in methods and devices for melting materials by induction | |
FR1371332A (en) | Improvements in methods and apparatus for elongation, in particular spinal elongation | |
FR1456702A (en) | Method and apparatus for studying the magnetic circular dichroism of absorbent substances | |
FR1449124A (en) | Method and apparatus for the deposition of thin films | |
FR1440643A (en) | Improvements in devices and methods for controlling the composition of deposits formed by electrophoresis | |
FR1343944A (en) | Improvements in methods and devices for controlling combustion | |
FR1156815A (en) | Method for limiting the magnetic flux dispersed in magnetic systems with constant polarity and magnetic system for the application of said method | |
FR1506261A (en) | Method and device for controlling dynamic range in voice encoder systems | |
FR84416E (en) | Improvements to seat belts for motorists and similar applications | |
FR1387139A (en) | Improvements in methods and devices for radioactive sounding coring | |
FR1459518A (en) | Improvements to methods and devices for checking the homogeneity of mixtures of liquids | |
FR1414774A (en) | Device for styling the hair and for similar uses | |
FR1426368A (en) | Improvements in methods and devices for the production of cellular substances | |
FR1500840A (en) | Method and device for encoding fingerprints | |
FR89810E (en) | Improvements in devices and methods for controlling the composition of deposits formed by electrophoresis | |
FR1323327A (en) | Improvements in methods and devices for mixing fluids | |
FR1452924A (en) | Device for winding very thin strips | |
FR1465318A (en) | Improvements in devices and methods for recording images or symbols | |
FR1323572A (en) | Method for regulating voltages and devices for implementing this method | |
FR1385779A (en) | Device for measuring very small fluctuations in linear and angular velocities | |
FR1387187A (en) | Method and device for the prolonged flow of active substances |