| 摘要 |
<p>An A/D converter sets a sound collection signal to a low sensitivity and inputs it into a sound collection beam generation unit.The A/D converter sets the sound collection signal to a high sensitivity and inputs it into the sound collection beam generation unit. A sound detector judges whether sound is present or absent according to the sound collection beam so as to judge whether a clip is present or absent. A control unit inputs the judgments result of the sound detector. When a high-level sound collection beam signal is clipped, an encoder is set so that a low-level sound beam signal is outputted outside.</p> |
