可変長辞書を用いた単音節認識装置

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This paper covers the experiment on the Japanese syllable recognition system with the variable duration dictionary by using a 16 bits microcomputer(MN1613). We reported a syllable recognition experiment in the previous paper(Transactions of the Committee on Speech Research, Acoust. Soc. Jpn. , 13-144, S82-18, 1982)by using super minicomputer VAX-11/780. Correct recognition rate 94% was obtained and the validity of the variable duration dictionary algorithm was confirmed. Some improvement in the algorithm has been done to adopt the algorithm to the microcomputer. Ninety-five percents correct recognition rate is obtained on the microcomputer system. Segmentation technique is newly employed and the duration, from -51. 2 ms to +51. 2 ms for vowels and voiceless stop, -102. 4 ms to +51. 2 ms for voiced consonants, -51. 2 ms to 102. 4 ms for semivowels are chosen in the variable duration dictionary. Moreover we propose a technique for segmentation considering the bandpower difference between male and female speakers and also propose a new algorithm to discriminate /si/ to /ci/ and /su/ to /tsu/. Ninety-five percents correct recognition rate for 10 speakers has been obtained with the 68 Japanese mono-syllables. Each syllable is spoken 10 or 20 times for both male and female speakers in this experiment.
社団法人日本音響学会の論文