| 摘要 |
<p>FIELD: information technologies. ^ SUBSTANCE: microphone device is proposed with receiving sound channel in the form of cylinder or truncated cone, in the end of which there is a reflector mirror, and receiver-converter of sound is located in its focus. Geometric dimensions of device are proposed, which provide for independence of sound reception on its frequency. Values of sound absorption ratios are recommended for internal surface of sound receiving channel and reflecting surface of mirror. It is proposed to use receiving sound channels as additional independent elements to existing microphones of wide application, which make it possible to produce microphone with sharp reception diagram. ^ EFFECT: independence of signal reception, higher sharpness of reception diagram. ^ 2 cl, 5 dwg</p> |
