5. A speech recognition apparatus as claimed in claim 4, characterized in that: the output means comprises a display; and the output means displays one or more words corresponding to the command model having the best match score for a current sound if the best match score for the current sound is better than the recognition threshold score for the current sound.
5. A speech recognition apparatus as claimed in claim 4, characterized in that: the output means comprises a display; and the output means displays one or more words corresponding to the command model having the best match score for a current sound if the best match score for the current sound is better than the recognition threshold score for the current sound. 6. A speech recognition apparatus as claimed in claim 5, characterized in that the output means outputs an unrecognizable-sound indication signal if the best match score for the current sound is worse than the recognition threshold score for the current sound.