Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

Connected Japanese Digit Recognition with Pitch Accent-Dependent Models

Kazuhiro Kondo

Texas Instruments Tsukuba Research and Development Center Limited, Miyukigaoka, Tsukuba, Ibaraki, Japan

This paper describes our first attempt to model accents in Japanese. We chose connected-digit recognition as our task since its simple accent structure will easily enable us to model its accents. We propose to use two distinct models for each digit according to two possible accent positions. Analysis of the trained models seems to show that the models represent alterations in the acoustics introduced by accents, even though current models only utilize intensity to distinguish accent. Connected digit recognition tests show that word errors can be decreased by up to 42% with the proposed models compared to conventional accent-independent models. Error analysis seems to suggest that not all digits require accent-dependent models.

Full Paper

Bibliographic reference.  Kondo, Kazuhiro (1995): "Connected Japanese digit recognition with pitch accent-dependent models", In EUROSPEECH-1995, 23-26.