A comparative analysis of Japanese and English digit recognition

This paper presents initial results of comparisons between fluently spoken Japanese and English on a common task: speaker independent digit recognition with applications in voice dialing. The complexity of this task across these languages is comparable in terms of lexicon size and perplexity of the language model. The English lexicon contained 11 words, and the Japanese lexicon contained 13 words. The durations of the words, as well as phones proved to be longer and have greater variation in English than in Japanese. An analysis of several key recognition parameters, namely the frame duration, LPC order, and feature vector dimensionality are also included. None of the above parameters seems to show language dependency in our test