Method, device and automobile for determining main transmission path of sound of tire cavity
A technology of transmission path and cavity sound, which is used in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effect of improving implementation efficiency, avoiding decoupling problems, and efficient investigation
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[0064] refer to figure 1 , the present invention provides a method for determining the main transmission path of tire cavity sound, comprising:
[0065] Step 1, determine the target wheel that contributes the most to the tire cavity sound.
[0066] Specifically, refer to figure 2 , step 1 consists of:
[0067] Step 11, determine a wheel on the vehicle as the wheel to be tested, fill the wheel to be tested with the first medium and fill the remaining wheels with a medium whose cavity modal frequency is lower than the cavity modal frequency of the first medium. a second medium, and a microphone for collecting sound pressure is arranged at at least one sound pressure response point in the vehicle compartment;
[0068] Wherein, the first medium is a rare gas, and the second medium is air; at least one of the sound pressure response points includes: the front driver's right ear FLR and / or the rear co-pilot's right ear RRR. The first medium is optimally helium.
[0069] The se...
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