Based on "two-microphone" method, a sound intensity measurement was carried out towards a vehicle four-stroke gasoline engine in a semi-anechoic room.
运用声强测试技术的双传声器法原理，对一台车用汽油发动机在半消声室内进行了声强测量。
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In this paper, a new method of traffic volume detection with microphone array is presented. And the condition of current traffic volume detection methods and vehicle noise signal is also analyzed.