ACOUSTIC MODEL NOISE ADAPTING METHOD AND DEVICE IMPLEMENTING SAME METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method and device for acoustic model noise adaptation that perform noise adaptation of a different acoustic model based upon an existent acoustic model noise adaptation result. SOLUTION: Disclosed are the method and device for acoustic model noise adaptation such that: a clean acoustic model A and a noise-adapted acoustic model B obtained through noise adaptation based upon the clean acoustic model A are prepared; variation quantities of respective parameters due to noise adaptation from the clean acoustic model A to noise-adapted acoustic model B are calculated; respective states and respective distributions of the clean acoustic model A are determined by referring to the clean acoustic model A with respective states and respective distributions of another clean acoustic model C; and respective parameters of the clean acoustic model C are adjusted based upon the variation quantities of the parameters due to the noise adaptation from the clean acoustic model A to the noise-adapted acoustic model B to generate a new noise-adapted acoustic model D. COPYRIGHT: (C)2006,JPO&NCIPI