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. 22, 2001
Filed:
Mar. 16, 1999
Abstract
In a speaker normalization processor apparatus, a vocal-tract configuration estimator estimates feature quantities of a vocal-tract configuration showing an anatomical configuration of a vocal tract of each normalization-target speaker, by looking up to a correspondence between vocal-tract configuration parameters and Formant frequencies previously determined based on a vocal tract model of the standard speaker, based on speech waveform data of each normalization-target speaker. A frequency warping function generator estimates a vocal-tract area function of each normalization-target speaker by changing feature quantities of a vocal-tract configuration of the standard speaker based on the feature quantities of the vocal-tract configuration of each normalization-target speaker estimated by the estimation means and the feature quantities of the vocal-tract configuration of the standard speaker, estimating Formant frequencies of speech uttered by each normalization-target speaker based on the estimated vocal-tract area function of each normalization-target speaker, and generating a frequency warping function showing a correspondence between input speech frequencies and frequencies after frequency warping.