| 摘要 |
<p>According to the present invention, a voice detection apparatus comprises: a driving signal processing unit for generating a driving signal by using a first output voltage, induced from an initial voice signal sensed by a piezoelectric body, and a preset first reference voltage; and a control unit which is turned on only when the driving signal is applied from the driving signal processing unit, receives a voice signal from a microphone, and determines whether a specific word is included in the voice signal. The control unit changes the first reference voltage in the case that the specific word is not detected from the voice signal during a predetermined period of time when the driving signal is applied, and also changes the first reference voltage by comparing the first reference voltage with a second reference voltage at predetermined intervals when the driving signal is not applied.</p> |
