Unsupervised speaker adaptation devices, voice recognition device, unsupervised speaker adaptation method, a recording medium for recording a speech recognition method, recording medium and a voice recognition program was recorded unsupervised speaker adaptation program

摘要

PROBLEM TO BE SOLVED: To obtain a speaker adapting device without a teacher in which a recognition rate is improved by preventing the erroneous estimation of the parameter of a standard pattern even when the speaking including unregistered words and the deformation of the speaking are large. SOLUTION: This speaker adapting device is provided with a voice feature level extracting means 1002 extracting the voice feauture levels from the input voice of a speaker, a keyword spotting means 101 recognizing and extracting and outputting a keyword and the section of the keyword by collating the voice feature levels extracted by the voice feature level extracting means 1002 with the standard pattern of a keyword to be obtained by connecting a standard pattern 1005 based on keywords stored in a recognition dictionary 1004 and a speaker adapting means without a teacher updating the standard pattern 1005 to a speaker adapting standard pattern 1008 based on the standard pattern 1005, the keyword and the voice feature levels of the section extracted as the keyword extracted by the keyword spotting means.