JPS6413598A - Voice encoder - Google Patents
Voice encoderInfo
- Publication number
- JPS6413598A JPS6413598A JP62170291A JP17029187A JPS6413598A JP S6413598 A JPS6413598 A JP S6413598A JP 62170291 A JP62170291 A JP 62170291A JP 17029187 A JP17029187 A JP 17029187A JP S6413598 A JPS6413598 A JP S6413598A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- bits
- positions
- quantizing
- distance
- 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.)
- Pending
Links
Abstract
PURPOSE: To efficiently determine a pulse position and to improve the tone by reducing the number of quantized bits at the positions of a starting predetermined number of pulses less than the number of quantized bits at the positions of remaining pulses by a means which quantizes positions where multipulses supplied to a linear predictive filter rises. CONSTITUTION: This encoder is equipped with a pulse search circuit 6 as a pulse search means which determines the time positions and sizes of specified plural pulses according to autocorrelation found by a 2nd arithmetic means autocorrelation arithmetic circuit 5 and actocorrelation found by an autocorrelation arithmetic circuit 4 as a 3rd arithmetic means, and an encoding circuit 9 as an encoding means having a quantizing means which sets the number of bits for quantizing the distance between pulses in a starting time area with specified plural pulses less than the number of bits for quantizing the distance between pulses in a time area following the said time area and quantizes the distance between pulses determined by the pulse search means 6 with a specified number of bits. Consequently, the number of pulses that is encoded with a limited number of bits is increased, so the tone of an encoding voice is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170291A JPS6413598A (en) | 1987-07-08 | 1987-07-08 | Voice encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170291A JPS6413598A (en) | 1987-07-08 | 1987-07-08 | Voice encoder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413598A true JPS6413598A (en) | 1989-01-18 |
Family
ID=15902233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62170291A Pending JPS6413598A (en) | 1987-07-08 | 1987-07-08 | Voice encoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413598A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04162100A (en) * | 1990-10-25 | 1992-06-05 | Nec Corp | Multiple pulse type voice coding-decoding device |
-
1987
- 1987-07-08 JP JP62170291A patent/JPS6413598A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04162100A (en) * | 1990-10-25 | 1992-06-05 | Nec Corp | Multiple pulse type voice coding-decoding device |
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