GB862132A - Frequency discrimination system of voice formant - Google Patents
Frequency discrimination system of voice formantInfo
- Publication number
- GB862132A GB862132A GB42575/59A GB4257559A GB862132A GB 862132 A GB862132 A GB 862132A GB 42575/59 A GB42575/59 A GB 42575/59A GB 4257559 A GB4257559 A GB 4257559A GB 862132 A GB862132 A GB 862132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- formant
- output
- dec
- voltage
- 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
Links
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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
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)
- Electrophonic Musical Instruments (AREA)
Abstract
862,132. Frequency discriminators. NIPPON ELECTRIC CO. Ltd. Dec. 15, 1959 [Dec. 17, 1958], No. 42575/59. Class 40(5) A frequency discriminator for providing a voltage characteristic of the amplitude and frequency shift of a voice formant comprises a variable frequency oscillator 7 the output of which is modulated by the formant signal, a single sideband load pass filter 2, the frequencies of the selected sideband then being passed through networks 3, 4 having reversed attenuation/frequency characteristics with respect to one another, the two outputs from 3, 4 being compared in a comparator 5 which will give an output if the formant is shifted in frequency, said output voltage later giving an indication of said frequency shift and being supplied to a controller 6 to feed back a voltage to the oscillator 7 so to vary the frequency thereof that the centre frequency of the selected sideband is maintained at the centre of the passband of filter 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP862132X | 1958-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB862132A true GB862132A (en) | 1961-03-01 |
Family
ID=13880485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42575/59A Expired GB862132A (en) | 1958-12-17 | 1959-12-15 | Frequency discrimination system of voice formant |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB862132A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2229109A1 (en) * | 1973-05-08 | 1974-12-06 | Westinghouse Electric Corp |
-
1959
- 1959-12-15 GB GB42575/59A patent/GB862132A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2229109A1 (en) * | 1973-05-08 | 1974-12-06 | Westinghouse Electric Corp |
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