GB1061857A - Improvements in speech analysis systems - Google Patents
Improvements in speech analysis systemsInfo
- Publication number
- GB1061857A GB1061857A GB40710/65A GB4071065A GB1061857A GB 1061857 A GB1061857 A GB 1061857A GB 40710/65 A GB40710/65 A GB 40710/65A GB 4071065 A GB4071065 A GB 4071065A GB 1061857 A GB1061857 A GB 1061857A
- Authority
- GB
- United Kingdom
- Prior art keywords
- function
- excitation
- signal
- excitation function
- analyser
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Transmitters (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
1,061,857. Vocoders. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 24, 1965 [Oct. 1, 1964], No. 40710/65. Heading H4R. In a vocoder, Fig. 4, the excitation function consisting of voicedunvoiced. switching signal and pitch frequency signal derived from the speech by excitation function generator 2 is applied to a pitch frequency synthesizer 4A, which is similar to the synthesizer 4 used in the vocoder receiver, and the synthesized excitation signal is applied to an analyser 1A, similar to the analyser 1 used to derive the aggregate function signal from the original speech, to derive control signals proportional to the level of the excitation function in each of the analysis channels which signals are used to adjust attenuators R1 to Rn in the lines K1 to Kn so as to compensate, by adjustment of the aggregate function, any deviation from flatness of the envelope of the excitation function with respect to frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA838464A AT251655B (en) | 1964-10-01 | 1964-10-01 | Channel vocoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1061857A true GB1061857A (en) | 1967-03-15 |
Family
ID=3604991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40710/65A Expired GB1061857A (en) | 1964-10-01 | 1965-09-24 | Improvements in speech analysis systems |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT251655B (en) |
| BE (1) | BE670406A (en) |
| CH (1) | CH425903A (en) |
| DE (1) | DE1258471B (en) |
| ES (2) | ES318014A1 (en) |
| FR (1) | FR1454589A (en) |
| GB (1) | GB1061857A (en) |
| NL (1) | NL153003B (en) |
| SE (1) | SE337046B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2544901B1 (en) * | 1983-04-20 | 1986-02-21 | Zurcher Jean Frederic | CHANNEL VOCODER PROVIDED WITH MEANS FOR COMPENSATING FOR PARASITIC MODULATIONS OF THE SYNTHETIC SPEECH SIGNAL |
-
1964
- 1964-10-01 AT ATA838464A patent/AT251655B/en active
-
1965
- 1965-09-20 CH CH1306365A patent/CH425903A/en unknown
- 1965-09-24 GB GB40710/65A patent/GB1061857A/en not_active Expired
- 1965-09-30 ES ES0318014A patent/ES318014A1/en not_active Expired
- 1965-09-30 ES ES0318017A patent/ES318017A1/en not_active Expired
- 1965-09-30 NL NL656512648A patent/NL153003B/en unknown
- 1965-10-01 FR FR33385A patent/FR1454589A/en not_active Expired
- 1965-10-01 SE SE12755/65A patent/SE337046B/xx unknown
- 1965-10-01 DE DEJ29098A patent/DE1258471B/en active Pending
- 1965-10-01 BE BE670406A patent/BE670406A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES318014A1 (en) | 1965-12-01 |
| FR1454589A (en) | 1966-02-11 |
| SE337046B (en) | 1971-07-26 |
| NL153003B (en) | 1977-04-15 |
| NL6512648A (en) | 1966-04-04 |
| CH425903A (en) | 1966-12-15 |
| ES318017A1 (en) | 1966-07-16 |
| DE1258471B (en) | 1968-01-11 |
| AT251655B (en) | 1967-01-10 |
| BE670406A (en) | 1966-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1061857A (en) | Improvements in speech analysis systems | |
| JPS5412510A (en) | Eliminating system for interference distortion caused in mudulation signal by mutual interference of fm wave signals | |
| JPS54112152A (en) | Frequency divider | |
| GB1032718A (en) | Improvements relating to vocoder speech transmission systems | |
| ES448790A1 (en) | Improvements in systems to prevent perturbing impacts of parasite signals on television receivers. (Machine-translation by Google Translate, not legally binding) | |
| GB1273888A (en) | Frequency deviation modifier | |
| GB962601A (en) | Improvements in or relating to impedance compensating arrangements | |
| GB1196400A (en) | Speech Transmission Systems | |
| GB1068272A (en) | High stability gas cell frequency standard | |
| GB1086230A (en) | Frequency detection system | |
| CA603567A (en) | Frequency control means for monophonic tone generating oscillator | |
| GB1093961A (en) | Improvements relating to stereophonic transmission systems and receivers therefor | |
| JPS545311A (en) | Synchronous system for single side-band communication | |
| JPS5215231A (en) | Multifunction keyboard | |
| GB1011634A (en) | Improvements in or relating to speech transmission systems | |
| GB920212A (en) | Improvements in and relating to a system for radio-guiding a mobile object along a path | |
| GB1093930A (en) | Improvements in or relating to systems and apparatus for deriving pilot frequencies for use in carrier communication systems | |
| ES243848A1 (en) | Improvements in radar systems (Machine-translation by Google Translate, not legally binding) | |
| GB1110206A (en) | Improvements in or relating to control devices for traffic signal installations | |
| GB1129826A (en) | A bischlorothymol methane | |
| GB1146184A (en) | Speech synthesizer | |
| GB1248956A (en) | Improvements in musical instruments | |
| FR2058696A5 (en) | ||
| GB978742A (en) | A new or improved apparatus for furnishing information as to position of objects | |
| ES285674A3 (en) | Method of receiving vocal frequency key signals (Machine-translation by Google Translate, not legally binding) |