JPS6413597A - Voice encoder - Google Patents
Voice encoderInfo
- Publication number
- JPS6413597A JPS6413597A JP62170290A JP17029087A JPS6413597A JP S6413597 A JPS6413597 A JP S6413597A JP 62170290 A JP62170290 A JP 62170290A JP 17029087 A JP17029087 A JP 17029087A JP S6413597 A JPS6413597 A JP S6413597A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- amplitude
- pulse
- cross correlation
- plural numbers
- 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
Abstract
PURPOSE: To improve the coding tone with a small operation quantity by adjusting an amplitude after finding pulses whose number is previously determined by a pulse amplitude adjusting means in the generating process of multipulses. CONSTITUTION: The time positions and sizes of a specified plural numbers of multipulses are determined on the basis of cross correlation found by a cross correlation arithmetic circuit 3 as a 2nd arithmetic means and autocorrelation found by an autocorrelation arithmetic circuit 4 as a 3rd arithmetic means. In this process, the time positions and sizes of the specified plural numbers of pulses are determined without correcting the pulse amplitude, and then the amplitude of the specified plural numbers of pulses is adjusted by a pulse search circuit 5 as a pulse search means according to overlaps of the positions of the pulses. Thus, the pulse amplitude is adjusted on the basis of the cross correlation left after the pulse search, so that quality of an encoding voice is increased with a small operation quantity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170290A JP2969619B2 (en) | 1987-07-08 | 1987-07-08 | Speech coder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170290A JP2969619B2 (en) | 1987-07-08 | 1987-07-08 | Speech coder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6413597A true JPS6413597A (en) | 1989-01-18 |
JP2969619B2 JP2969619B2 (en) | 1999-11-02 |
Family
ID=15902213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62170290A Expired - Lifetime JP2969619B2 (en) | 1987-07-08 | 1987-07-08 | Speech coder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2969619B2 (en) |
-
1987
- 1987-07-08 JP JP62170290A patent/JP2969619B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2969619B2 (en) | 1999-11-02 |
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