Title: Method of Improving Microphone Sensitivity Based on Parabolic Focus
Abstract: Currently the demand is getting more and more to pick up the vocal signal which could not be heard by human ear at long distance and save for future analysis when it is necessary. But normal pickup devices' sensitivity is too limited to get the distant signal,the method which could improve the pickup sensitivity is required. Microphone's sensitivity is from- 40dB to- 75dB( S / N ratio is more than 50dB),directivity angle is more than 200°,even the ultra- cardiac directional microphone,the angle is still more than 120°. How to improve the pickup device sensitivity is introduced.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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