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:
Sep. 19, 1995
Filed:
May. 03, 1993
Keiichi Yamada, Kanagawa, JP;
Naoto Iwahashi, Nara, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method for speech analysis applicable to a speech analysis/synthesis system employed for producing a synthetic speech. Voiced and unvoiced segments of input speech signals X(n) are discriminated. An amplitude information A(.omega.) and a phase information P.sub.X (.omega.) are extracted from the voiced segments of the input speech signals. A pitch period is detected from the voiced segments of the input speech signals. A pulse train S(n) as a sound source information is generated so that its period corresponds on the time scale to the detected pitch period of the input speech signals. A phase information P.sub.S (.omega.) is extracted from the pulse train S(n). A difference P(.omega.) between the phase information P.sub.S (.omega.) of the pulse train S(n) and the phase information P.sub.X (.omega.) of the input speech signal is found and is supplied as the phase information of the desired one-pitch period within the input speech signals.