抄録
In recent years, speech recoginiton system have been introduced in a wide variety of environments such as vehicle instrumentation. Speech recogniton plays an important role in ships' chief engineer systems. In such system, speech regonition supports engine room controls, and lower than 0-dB signal-to-noise ratio (SNR) operability is required. In such a low SNR environment, a noise signal can be misjudged as speech, dramatically decreasing the recognition rate. Therefore, this study focuses on a recoginiton system operating in system that uses body-conducted signals. Such signals are seldom affected by background noise, and thus a high recognition rate can be expected in low SNR environments, construnction of a system with a high recognition rate can be expected.
