JPS6456500A - Voice encoder - Google Patents
Voice encoderInfo
- Publication number
- JPS6456500A JPS6456500A JP62213784A JP21378487A JPS6456500A JP S6456500 A JPS6456500 A JP S6456500A JP 62213784 A JP62213784 A JP 62213784A JP 21378487 A JP21378487 A JP 21378487A JP S6456500 A JPS6456500 A JP S6456500A
- Authority
- JP
- Japan
- Prior art keywords
- prediction coefficients
- prediction
- calculated
- varying
- frames
- 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 improve speech quality by varying prediction coefficients, calculated by frames, in the frames sequentially by arbitrary step width so that residual signal power is minimized. CONSTITUTION: Frame length is set long (e.g. 30-40msec) and the bit distribution quantity of prediction coefficients is increased; and the resulting decrease in time resolution is prevented by varying the calculated prediction coefficients in the frames sequentially in the optimization direction. This means initially set a predictor 15 to the prediction coefficient calculated at the head of a frame, and then the prediction coefficients operate so as to minimize momentary residual electric power, so that a prediction gain increases. Consequently, the speech quality can be improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213784A JPS6456500A (en) | 1987-08-27 | 1987-08-27 | Voice encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213784A JPS6456500A (en) | 1987-08-27 | 1987-08-27 | Voice encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456500A true JPS6456500A (en) | 1989-03-03 |
Family
ID=16644986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62213784A Pending JPS6456500A (en) | 1987-08-27 | 1987-08-27 | Voice encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5098534A (en) * | 1988-10-11 | 1992-03-24 | C. Uyemura & Co., Ltd. | Composition and method for electrolytically stripping silver |
-
1987
- 1987-08-27 JP JP62213784A patent/JPS6456500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5098534A (en) * | 1988-10-11 | 1992-03-24 | C. Uyemura & Co., Ltd. | Composition and method for electrolytically stripping silver |
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