Sharable software repository for Japanese large vocabulary continuous speech recognition
Tatsuya Kawahara, Tetsunori Kobayashi, Kazuya Takeda, Nobuaki Minematsu, Katsunobu Itou, Mikio Yamamoto, Atsushi Yamada, Takehito Utsuro, Kiyohiro Shikano · 1998
The project of Japanese LVCSR (Large Vocabulary Continuous Speech Recognition) platform is introduced. It is a collaboration of researchers of different academic institutes and intended to develop a sharable software repository of not only databases but also models and programs. The platform consists of a standard recognition engine, Japanese phone models and Japanese statistical language models. A set of Japanese phone HMMs are trained with ASJ (Acoustic Society of Japan) databases of 20K sentence utterances per each gender. Japanese word N-gram (2-gram and 3-gram) models are constructed with a corpus of Mainichi newspaper of four years. The recognition engine JULIUS is developed for assessment of both acoustic and language models. The modules are integrated as a Japanese LVCSR system and evaluated on 5000-word dictation task. The software repository is available to the public.