Patent Document ID: 7634401
Application ID: 11368986

Base Claim:
1. A speech recognition method comprising: a step for starting input of speech made by a user in response to a user's operation; a step for determining whether beginning of the input speech is missing; a step for setting pronunciation information for recognizing the input speech of which the beginning is not missing in a case where a head portion of a speech waveform power does not exceed a predetermined threshold value, and setting pronunciation information for recognizing the input speech of which the beginning is missing in a case where the head portion of the speech waveform power exceeds the predetermined threshold value; and a step for recognizing the input speech using the set pronunciation information.

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Claim 2:
2. The speech recognition method according to claim 1 , wherein determination whether the beginning of the input speech is missing in the determining step is made using information about at least one of a zero-crossing rate, spectral information, and a feature parameter representing a harmonic structure.