System for search of a codebook in a speech encoder

Details System for search of a codebook in a speech encoder System for search of a codebook in a speech encoder

Filed on

1993-12-14

Date issued

1996-05-21

Examiner

MacDonald, Allen R.

Other Related Categories

395 228, 395 232, G10L 302, G10L 900

Type

Patent

Status

active

Patent number

055198066

Description

ABSTRACT:
A speech encoder synthesizes an excitation sound source in accordance with the linear coupling of at least two predetermined basis vectors. In realizing the codebook search by using signal processing LSIs, the ordination of the first cross correlation R.sub.m between an input speech signal p(n) and plural reproduced signals obtained by using plural basis vectors is computed, and the ordination of the second cross correlation D.sub.mj of the plural reproduced signals qm(n) is computed. These ordinations are arranged to be one ordination Rd.sub.mj. By using the ordination Rd.sub.mj, all possible combinations of the third and fourth cross correlation calculations are carried out to provide a most optimum codebook.

REFERENCES:
patent: 4817157 (1989-03-01), Gerson
patent: 4896361 (1990-01-01), Gerson
patent: 5187745 (1993-02-01), Yip et al.
M. Schroeder et al., "Code-Excited Linear Prediction (CELP): High-Quality Speech at Very Low Bit Rates", ICASSP, vol. 3, Mar. 1985, pp. 937-940.

Affiliated with

Also associated with

Rating

System for search of a codebook in a speech encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for search of a codebook in a speech encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for search of a codebook in a speech encoder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2045952