DRIVE POINT DETERMINATION DEVICE OF NON-NEGATIVE VALUE SPATIAL DECOMPOSITION, DRIVE POINT DETERMINATION METHOD OF NON-NEGATIVE SPATIAL DECOMPOSITION, ARTICULATION PARAMETER ESTIMATION DEVICE, ARTICULATION PARAMETER ESTIMATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a drive point determination technique capable of obtaining a drive point so that a drive point based on a vocal track spectrum parameter and a drive point based on an articulation parameter can be aligned with each other.;SOLUTION: A correction coefficient for correcting a drive point of a voice tract spectrum parameter by a linear conversion is decided using an articulation parameter, and a correction of the drive point of the voice tract spectrum parameter is performed using this correction coefficient. Specifically, a coefficient (correction coefficient) of a linear function is calculated, in which a squared error between the drive point after correction obtained by linearly converting the drive point based on the voice track spectrum parameter and the drive point based on the articulation parameter is minimized using the drive point based on the voice tract spectrum parameter and the drive point based on the articulation parameter, and the drive point based on the voice tract spectrum parameter is corrected using the correction coefficient.;COPYRIGHT: (C)2014,JPO&INPIT