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:
Jul. 15, 2003
Filed:
Sep. 07, 2000
Pioneer Corporation, Tokyo, JP;
Abstract
A method for forming phoneme data and a voice synthesizing apparatus for phoneme data in the voice synthesizing apparatus is provided. In this method and apparatus, an LPC coefficient is obtained for every phoneme and is set to temporary phoneme data and a first LPC Cepstrum based on the LPC coefficient is obtained. A second LPC Cepstrum is obtained based on each voice waveform signal which has been synthesized and generated by the voice synthesizing apparatus while the pitch frequency is changed step by step with a filter characteristic of the voice synthesizing apparatus being set to a filter characteristic according to the temporary phoneme data. Further, an error between the first and second LPC Cepstrums is obtained as an LPC Cepstrum distortion. Each phoneme in the phoneme group belonging to the same phoneme name in each of the phonemes is classified into a plurality of groups every frame length. The optimum phoneme is selected based on the LPC Cepstrum distortion every group from this group. The temporary phoneme data corresponding to this phoneme is used as final phoneme data.