CH452913A - Formant generator arrangement for a speech recognition device - Google Patents
Formant generator arrangement for a speech recognition deviceInfo
- Publication number
- CH452913A CH452913A CH1469666A CH1469666A CH452913A CH 452913 A CH452913 A CH 452913A CH 1469666 A CH1469666 A CH 1469666A CH 1469666 A CH1469666 A CH 1469666A CH 452913 A CH452913 A CH 452913A
- Authority
- CH
- Switzerland
- Prior art keywords
- multivibrator
- noise
- automatic gain
- gain control
- ring
- Prior art date
Links
- 238000001514 detection method Methods 0.000 abstract 1
- 239000011159 matrix material Substances 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- 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
- G10L15/00—Speech recognition
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/15—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being formant information
Landscapes
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Amplifiers (AREA)
- Noise Elimination (AREA)
- Control Of Amplification And Gain Control (AREA)
- Electrically Operated Instructional Devices (AREA)
- Prostheses (AREA)
Abstract
1,160,593. Speech recognition. INTERNATIONAL BUSINESS MACHINES CORP. 15 Sept., 1966 [13 Oct., 1965], No. 41169/66. Heading G4R. [Also in Divisions H3 and H4] In a speech analysis system, gating of coded signals (representing speech characteristics) into a store is inhibited on detection of noise. A speech waveform from a microphone 1 is amplified at 3 and split into frequency bands at 60 to feed formant location means 129 and automatic gain control 66. The latter produces a signal in response to the largest of the frequency band amplitudes to control the gain of amplifier 3, feed noise clamp generator 90 and start multivibrator 160. The multivibrator 160 then drives a ring 199 to read the outputs of the formant location means 129 into a storage matrix 150. The multivibrator 160 is kept operating after the start signal from the automatic gain control 66 disappears by a signal on line 201 from ring 199. The noise clamp generator 90 differentiates the input from the automatic gain control 66 to detect noise. While noise is present, generator 90 inhibits multivibrator 160. A potentiometer 179 allows the frequency and width of the pulses from the multivibrator 160 to be controlled to compensate for differences between different speakers. The stages of the ring 199 have indicator lamps e.g. 243, as has the automatic gain control 66 at 73.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495427A US3418429A (en) | 1965-10-13 | 1965-10-13 | Speech analysis system |
Publications (1)
Publication Number | Publication Date |
---|---|
CH452913A true CH452913A (en) | 1968-03-15 |
Family
ID=23968609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1469666A CH452913A (en) | 1965-10-13 | 1966-10-12 | Formant generator arrangement for a speech recognition device |
Country Status (8)
Country | Link |
---|---|
US (1) | US3418429A (en) |
BE (1) | BE687178A (en) |
CH (1) | CH452913A (en) |
ES (1) | ES331289A1 (en) |
FR (1) | FR1494395A (en) |
GB (1) | GB1160593A (en) |
NL (1) | NL148731B (en) |
SE (1) | SE321958B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2291259A1 (en) * | 1974-11-12 | 1976-06-11 | Raffinage Cie Francaise | Aq suspensions of hard asphalt - for precoating aggregates, stabilised with anionic emulsifier |
GB2196460B (en) * | 1986-10-03 | 1991-05-15 | Ricoh Kk | Methods for comparing an input voice pattern with a registered voice pattern and voice recognition systems |
US5231670A (en) * | 1987-06-01 | 1993-07-27 | Kurzweil Applied Intelligence, Inc. | Voice controlled system and method for generating text from a voice controlled input |
EP0553906B1 (en) * | 1992-01-21 | 1998-04-08 | Koninklijke Philips Electronics N.V. | Method and apparatus for sound enhancement with envelopes of multiband passed signals feeding comb filters |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126449A (en) * | 1964-03-24 | Shirman | ||
US3109066A (en) * | 1959-12-15 | 1963-10-29 | Bell Telephone Labor Inc | Sound control system |
US3261916A (en) * | 1962-11-16 | 1966-07-19 | Ibm | Adjustable recognition system |
-
1965
- 1965-10-13 US US495427A patent/US3418429A/en not_active Expired - Lifetime
-
1966
- 1966-09-12 FR FR8032A patent/FR1494395A/en not_active Expired
- 1966-09-15 GB GB41169/66A patent/GB1160593A/en not_active Expired
- 1966-09-16 ES ES0331289A patent/ES331289A1/en not_active Expired
- 1966-09-21 BE BE687178D patent/BE687178A/xx unknown
- 1966-10-11 NL NL666614325A patent/NL148731B/en unknown
- 1966-10-12 CH CH1469666A patent/CH452913A/en unknown
- 1966-10-13 SE SE13920/66A patent/SE321958B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB1160593A (en) | 1969-08-06 |
DE1547030B2 (en) | 1976-03-04 |
US3418429A (en) | 1968-12-24 |
BE687178A (en) | 1967-03-01 |
SE321958B (en) | 1970-03-23 |
NL6614325A (en) | 1967-04-14 |
NL148731B (en) | 1976-02-16 |
DE1547030A1 (en) | 1969-11-20 |
FR1494395A (en) | 1967-09-08 |
ES331289A1 (en) | 1967-07-01 |
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