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. 27, 2014
Filed:
Jun. 02, 2006
Applicants:
Shunji Mitsuyoshi, Tokyo, JP;
Kaoru Ogata, Tokyo, JP;
Fumiaki Monma, Mitaka, JP;
Inventors:
Assignees:
AGI Inc., Tokyo, JP;
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G10L 11/00 (2006.01); G10L 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speech analyzer includes a speech acquiring section, a frequency converting section, an autocorrelation section, and a pitch detection section. The frequency converting section converts the speech signal acquired by the speech acquiring section into a frequency spectrum. The autocorrelation section determines an autocorrelation waveform by shifting the frequency spectrum along the frequency axis. The pitch detection section determines the pitch frequency from the distance between two local crests or troughs of the autocorrelation waveform.