Noise measurement system based on acoustic array

Abstract

The invention discloses a noise measurement system based on an acoustic array. The noise measurement system comprises an adjustable mounting disc, an adjustable support frame, an on-line detection host and a plurality of microphones; the adjustable mounting disc is mounted on the adjustable support frame; the adjustable support frame can adjust the height and the angle of the adjustable mounting disc according to the height and the angle of a measured object; the microphones are mounted on the adjustable mounting disc, the microphones are arranged in an array, and the shape of the adjustable mounting disc can be adjusted as required so as to change the array combination shape and number of the microphones; and all the microphones are in wired connection with the on-line detection host, andnoise analysis is performed on noise information acquired by the microphones through the on-line detection host so that identification and positioning of a noise source can be realized. According tothe system, the problems of low measurement precision, small measurement range, poor universality and difficult movement of an existing noise measurement system can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of engineering equipment noise testing, in particular to a noise measurement system based on an acoustic array. Background technique [0002] In scientific research and engineering applications, sound source localization technology can be divided into two categories, namely sound array (microphone array or microphone array) sound source localization and sound intensity probe sound field test. The sound source localization algorithm based on the acoustic array is divided into three categories: one is the method based on beamforming; the other is the method based on high-resolution spectrum estimation; the third is the method based on the delay difference of sound arrival; the structure is divided into regular geometric shapes Arrays and unconventional arrays, arrays with regular geometric shapes include linear arrays, cross-shaped arrays, circular arrays, spiral arrays, etc. Irregular array types can be desig...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a noise measurement system based on an acoustic array, which can effectively solve the problems of low measurement accuracy, small measurement range, poor versatility, and difficult movement of the existing noise measurement system

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