| 摘要 |
PURPOSE:To obtain the microphone system capable of good S/N recording without using a large super directive microphone and without approaching a sound source. CONSTITUTION:A spare microphone 2 is provided in a position closer to a sound source 1 than the conventional microphones 3 and 20. A signal collected by the spare microphone 2 is properly time-delayed and outputted by added to the output of respective microphones 3 and 20 by adders 9 and 27. The S components of the S/N are increased by the principle of synchronous addition. |
