Car interior sound field visualization method applied to active noise control over car engine
A technology of active noise control and automobile engine, applied in speech analysis, instruments, etc., can solve the problems that it is difficult to ensure the accuracy of active control and affect the noise reduction performance of the system
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[0030] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0031] The vehicle interior sound field visualization method applied to the active noise control of automobile engine of the present invention comprises the following steps:
[0032] (1) Test of the sound field distribution in the car under the vibration and noise of the car engine
[0033] The purpose of the sound field test is to provide time-domain data signals for the visualization of the sound field. By arranging the microphone 1 in the car to test the sound field in the car under the vibration and noise of the car engine, it is best to arrange multiple microphones 1 in the car to complete the test at one time, but During the actual test, due to the limitation of the number of microphones 1 and the large number of sound field distribution measuring points, it is difficult to finish the test at one time. Therefore, the present invention ad...
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