| 摘要 |
<p>PURPOSE:To give a machine the same recognizing mechanism as that of a human auditory system by inputting the spectrum pattern of an input voice to the transmission characteristic part of the auditory system at the time of speech recognition, extracting the features of its output, and deciding similarity to a standard pattern and recognizing the voice. CONSTITUTION:A frequency analysis part 1 is equipped with band-pass filters and takes a frequency analysis of the input voice to generate the spectrum pattern, which is converted into a masking pattern by the auditory system transmission characteristic part 2. The similarity of the converted pattern to a standard pattern consisting of a masking pattern which is stored in a feature memory 6 is decided and the input voice is recognized according to the decision result. Consequently, the machine performs speech recognition by using not a recognition pattern depending strongly upon the individuality of a speaker like a voice channel pattern, but the same recognition pattern that the human has, so that the recognition rate of an undefined speaker is improved.</p> |
