JPS6466700A - Vector quantization system - Google Patents

Vector quantization system

Info

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
Application number
JP62224906A
Other languages
Japanese (ja)
Inventor
Tomohiko Taniguchi
Takashi Ota
Koji Okazaki
Fumio Amano
Shigeyuki Umigami
Hidehira Iseda
Kazumi Sato
Yoshihiro Tomita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62224906A priority Critical patent/JPS6466700A/en
Publication of JPS6466700A publication Critical patent/JPS6466700A/en
Pending legal-status Critical Current

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.
JP62224906A 1987-09-08 1987-09-08 Vector quantization system Pending JPS6466700A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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