JPS6466700A - Vector quantization system - Google Patents
Vector quantization systemInfo
- Publication number
- JPS6466700A JPS6466700A JP62224906A JP22490687A JPS6466700A JP S6466700 A JPS6466700 A JP S6466700A JP 62224906 A JP62224906 A JP 62224906A JP 22490687 A JP22490687 A JP 22490687A JP S6466700 A JPS6466700 A JP S6466700A
- Authority
- JP
- Japan
- Prior art keywords
- vector
- code book
- error
- input signal
- input
- 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 realize a vector quantizing system variable corresponding to the variation of input signal by calculating an error between each vector code and input vector of a code book with an error calculating part and updating the code book with an arithmetic operating part so as to provide the minimum error. CONSTITUTION: The code book is modified one after another matching a statistical characteristic of input signal to update for optimization. That is, the existing input vector is the nearest to which vector of the existing code book 1 is calculated with the error calculating part 2, the vector Cn selected so as to provide the minimum error is newly added to a training vector at the arithmetic operation part 3, the center of gravity about the collection of the training vector is re-calculated, and the code book 1 is updated, based on the result of this operation. Even though the statistical characteristic of input signal is varied, desired compressibility is always kept by repeating the same operation using the code book updated like this.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224906A JPS6466700A (en) | 1987-09-08 | 1987-09-08 | Vector quantization system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224906A JPS6466700A (en) | 1987-09-08 | 1987-09-08 | Vector quantization system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6466700A true JPS6466700A (en) | 1989-03-13 |
Family
ID=16821010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224906A Pending JPS6466700A (en) | 1987-09-08 | 1987-09-08 | Vector quantization system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6466700A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03243999A (en) * | 1990-02-22 | 1991-10-30 | Nec Corp | Voice encoding system |
JPH03243998A (en) * | 1990-02-22 | 1991-10-30 | Nec Corp | Voice encoding system |
-
1987
- 1987-09-08 JP JP62224906A patent/JPS6466700A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03243999A (en) * | 1990-02-22 | 1991-10-30 | Nec Corp | Voice encoding system |
JPH03243998A (en) * | 1990-02-22 | 1991-10-30 | Nec Corp | Voice encoding system |
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