NOISE MEASUREMENT EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a noise measurement equipment provided with a comparatively small microphone array capable of varying the direction of directivities to the prescribed angle and capable of varying the directivities by after processing freely while maintaining the sharp directivities. SOLUTION: The noise measurement equipment comprises: the microphone array 1 arranged with a plurality of microphones M1, M2, ..., MN; the A/D converter 2 for digitizing the output signal out of the microphone array 1; the data recorder 3 for storing the output signal outputted out of the microphone array 1 digitized at the A/D converter 2 for a prescribed time; and the personal computer 4 for inputting and processing the output signal of the data recorder 3. Wherein, the personal computer 4 comprises: a plurality of signal process means for generating various kinds of directivities of the microphone array 1; an operation process means for operational processing the various kinds of directivities generated by the signal process means; and the setting means for setting the signal process means and the operation process means for every prescribed angle. COPYRIGHT: (C)2007,JPO&INPIT