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:
Aug. 26, 2025
Filed:
Mar. 25, 2024
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/06 (2013.01); G10L 19/02 (2013.01); G10L 19/032 (2013.01); G10L 21/04 (2013.01); G10L 25/06 (2013.01); G10L 25/12 (2013.01); G10L 25/18 (2013.01); G10L 25/27 (2013.01);
U.S. Cl.
CPC ...
G10L 19/06 (2013.01); G10L 19/0212 (2013.01); G10L 19/032 (2013.01); G10L 21/04 (2013.01); G10L 25/06 (2013.01); G10L 25/12 (2013.01); G10L 25/18 (2013.01); G10L 25/27 (2013.01);
Abstract
An autocorrelation calculation unitcalculates an autocorrelation R(i) from an input signal. A prediction coefficient calculation unitperforms linear prediction analysis by using a modified autocorrelation R'(i) obtained by multiplying a coefficient w(i) by the autocorrelation R(i). It is assumed here, for each order i of some orders i at least, that the coefficient w(i) corresponding to the order i is in a monotonically increasing relationship with an increase in a value that is negatively correlated with a fundamental frequency of the input signal of the current frame or a past frame.