NOISE-CON 2017 Sound Intensity Mapping to Synthesize and Rapidly Optimize the Reduction of Machinery Noise Emission

PublishTime：2022-11-03

Sound intensity scanning measurements were used to rapidly design an optimum package to reduce noise emission from a semi-trailer mounted refrigeration unit. The scans were taken with and without enclosures to identify the individual sources causing noise peaks in normal operation. Scanning gave us sound power level as the target metric to reduce emissions, independent of the test environment and microphone location, unlike standard sound pressure level measurements. This also allowed the synthesis of additional combination treatments, specifically, combinations not practical to measure, due to time constraints, using power difference. It gave us a quick and precise path to the optimized treatment package, with sound power nearly halved (a 2.5dB level reduction, which is a 44% reduction in radiated sound power).

Brand of Product：	Aearo Technologies
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Product Category：	More
Application：	More
Data Type：	White Paper More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	2017 June 14
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Data Size：	335 KB

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