18. A speech recognition method as claimed in claim 17, further comprising the step of displaying an unrecognizable-sound indicator if the best match score for the current sound is worse than the recognition threshold score for the current sound.
18. A speech recognition method as claimed in claim 17, further comprising the step of displaying an unrecognizable-sound indicator if the best match score for the current sound is worse than the recognition threshold score for the current sound. 19. A speech recognition method as claimed in claim 18, characterized in that unrecognizable-sound indicator comprises one or more question marks.