Microphone linear array for sound scattering coefficient site test
A field test and microphone technology, applied in the field of microphone line array, can solve the problems of high shape requirements, time-consuming and laborious processing and cutting, and long test cycle, and achieve the effect of simple measurement, reduced measurement cost, and low acoustic environment requirements.
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[0012] refer to figure 2 , 3 , 4, a microphone line array for on-site testing of sound scattering coefficients, comprising a U-shaped fixed bracket 3, one end of the U-shaped fixed bracket is installed with a rotatable triangular bracket 4, and the other end of the U-shaped fixed bracket is installed with an angle adjustment disc 5, a triangular bracket Both the bracket and the angle adjustment disc are equipped with a connecting bracket 6, and the microphone mounting plate 7 is fixed on the connecting bracket. 8 interference fit. The entire microphone line array is composed of 13 microphones arranged in a straight line with unequal distances, and the spacing between the microphones is 10 cm, 5 cm, 5 cm, 5 cm, 2.5 cm, 2.5 cm, 2.5 cm, 2.5 cm, 5 cm, 5 cm , 5 cm, 10 cm. The angle adjustment disk 5 is engraved with scales, and each scale is spaced at 10 degrees.
[0013] During the measurement, the directivity diagram of the linear array composed of 5 microphones (the distanc...
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