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:
Jan. 23, 1990
Filed:
May. 17, 1988
Kokusai Denshin Denwa, Co., Ltd., Tokyo, JP;
Abstract
A speech synthesizer that synthesizes speech by actuating a voice source and a filter which processes output of the voice source according to speech parameters in each successive short interval of time according to feature vectors which include formant frequencies, formant bandwidth, speech rate and so on. Each feature vector, or speech parameter is defined by two target points (r.sub.1, r.sub.2), and a value at each target point together with a connection curve between target points. A speech rate is defined by a speech rate curve which defines elongation or shortening of the speech rate, by start point (d.sub.1) of elongation (or shorteninng), end point (d.sub.2), and elongation ratio between d.sub.1 and d.sub.2. The ratios between the relative time of each speech parameter and absolute time are preliminarily calculated according to the speech rate table in each predetermined short interval.