Microphone fixing device for measuring interior noises at ear positions of driver

Abstract

The invention relates to the technical field of automobile acoustic testing, in particular to a microphone fixing device for measuring interior noises at ear positions of a driver. The microphone fixing device comprises a first U-shaped metal sheet and a second U-shaped metal sheet, wherein the bottoms of the first U-shaped metal sheet and the second U-shaped metal sheet are fixedly connected with each other; a first V-shaped block is fixed on the bottom surface of the first U-shaped metal sheet; a seat headrest rod is placed in the first V-shaped block and locked and fixed through a first bolt; a second V-shaped block is fixed on the bottom surface of the second U-shaped metal sheet; a cylindrical long rod is placed in the second V-shaped block and locked and fixed through a second bolt; a third bolt is connected with the cylindrical long rod; and a clamping nut and a U-shaped sleeve clip sleeves a screw rod of the third bolt in sequence. The microphone fixing device for measuring the interior noises at the ear positions of the driver, provided by the invention, is advantaged in that the structure of the microphone fixing device is simple; the detaching process of the microphone fixing device is simple in operation during testing; the microphone fixing device exerts an accurately positioning effect on a microphone during measuring the interior noises at the ear positions of the driver or passengers; and a problem that the testing result is not accurate enough because the microphone is not firmly fixed is effectively solved.

Description

technical field [0001] The invention relates to the technical field of automobile acoustic testing, in particular to a microphone fixing device for measuring the noise next to the driver's ear in the vehicle. Background technique [0002] In the process of testing and analyzing the improvement of vehicle interior noise, it is usually necessary to test the sound pressure next to the ears of the driver or passengers as the standard for evaluating the improvement effect of vehicle interior noise reduction. , if the microphone is not fixed firmly enough, its position will change before and after the test, which will eventually lead to inaccurate test results. Therefore, in order to improve the accuracy of the test results, it is necessary to install a suitable microphone fixing device next to the driver's or passenger's ear to ensure the consistency of the microphone position before and after the test. Contents of the invention [0003] The present invention aims at the above...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above problems and provides a microphone fixing device for measuring the noise next to the driver's ear in the vehicle. The measurement device can improve the accuracy of the measurement results of the noise next to the ear in the vehicle and solve the problems caused by the continuous shaking of the vehicle and the position of the microphone during the test process. Inaccurate test results caused by changes

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