摘要 |
<p>A voice input device includes a first microphone (710-1) that includes a first diaphragm, a second microphone (710-2) that includes a second diaphragm, and a differential signal generation section (720) that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section (720) including a gain section (760) that amplifies the first voltage signal by a predetermined gain, and a differential signal output section (740) that generates and outputs a differential signal that indicates a difference between the first voltage signal amplified by the gain section and the second voltage signal.</p> |
申请人 |
FUNAI ELECTRIC ADVANCED APPLIED TECHNOLOGY RESEARCH INSTITUTE INC.;FUNAI ELECTRIC CO., LTD. |
发明人 |
TAKANO, RIKUO;SUGIYAMA, KIYOSHI;FUKUOKA, TOSHIMI;ONO, MASATOSHI;HORIBE, RYUSUKE;MAEDA, SHIGEO;TANAKA, FUMINORI;INODA, TAKESHI;CHOJI, HIDEKI |