The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 1996
Filed:
Dec. 14, 1993
Makio Nakamura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
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.