| 摘要 |
PROBLEM TO BE SOLVED: To reduce current consumption in a standby state of the speech to be recognized. SOLUTION: This device is provided with an intermittent drive control means 6 intermittent driving a sound input means 1, an input level decision means 2 detecting a sound level inputted while the intermittent driven sound input means 1 is in an operation state, deciding the presence of the sound from the size of its level and returning to a non-operation state when the sound does not exist is decided, a sound decision means 3 starting its operation after the sound exists is decided by this input level decision means 2, roughly deciding whether the sound is a noise or the sound like the speech and returning to the non-operation state when the sound is not the sound like the speech is decided and a speech decision means 4 for starting its operation after the sound is the sound like the speech is decided by this sound decision means 3, deciding whether or not the sound like the speech is the speech, transferring its characteristic data to a speech recognition means 5 when the sound is the speech is judged and returning to the non-operation state when the sound is not the speech. |
