| 摘要 |
PROBLEM TO BE SOLVED: To provide a speech recognition device capable of shortening the delay from when a speech start event is reported until when the speech recognition device is ready for speech while estimating noise, and allowing the speech right after reproduction of a notification sound. SOLUTION: The speech recognition device corrects a noise spectrum of background noise including the notification sound in the frequency band of the notification sound into a noise spectrum of only the background noise, removes the noise spectrum having been corrected from a spectrum of a sound signal based upon speech by a user after the reproduction of the notification sound, and performs speech recognition with respect to the spectrum of the sound signal from which the noise spectrum is removed. COPYRIGHT: (C)2011,JPO&INPIT
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