| 摘要 |
The device provides an efficient endpoint detection method in speech signal by calculating the threshold using the energy of silence in noisy environment. The device includes (A) the upper directional speech signal detector (20) which extracts the speech signal using the threshold value determined by the digital input signal; (B) the lower directional speech signal detector (21) which detects the speech interval of the energy pulse from the target vocabulary using the set value. The recognition block (16) compares the detected speech signal with the reference pattern of the reference memory (15) to recognize the speech signal, and produces the recognitized result through the index decision logic(17).
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