公开(公告)号：US20200298288A1

公开(公告)日：2020-09-24

申请号：US16304720

申请日：2017-04-19

Applicant: HONDA ELECTRONICS CO., LTD.

Inventor： Nagaya OKADA ,  Yoshiyuki ASAKURA

IPC: B08B3/12 ,  G01H3/08 ,  H01L21/304

Abstract: A sound-pressure analyzer in a high-intensity acoustic field that can accurately presume the cavitation-threshold and cavitation-amount being generated comprises: a hydrophone for transferring a voltage-signal corresponding to said sound-pressure in said acoustic field; a frequency-analyzer; and an arithmetic device. The frequency-analyzer analyzes the frequency-component in such an acoustic field based on the voltage-signal being transferred from the hydrophone and then sorts such signal into a basic-frequency component, a harmonic component, a sub-harmonic component and a white-noise component. An arithmetic device conducts arithmetic operations to evaluate the average of broadband sound pressure (ABP) of the white-noise component within a frequency-range having practical sensitivity, thus presuming the presence of the cavitation-threshold and the cavitation-amount being generated at a point wherein the ABP increases from about zero and wherein such cavitation-amount being generated is according to the level of the ABP value.