Digital Acoustic Intensity Techniques in Gasoline Engine Noise Studies 820363
This paper describes the use of digital measurements to assess acoustic intensity close to the various surfaces of a two litre gasoline engine. Using phase-locked data acquisition an acoustic power balance is constructed for the engine which is shown to correlate well with three other methods - lead covering, average surface vibration level and close microphone. However, the prediction of sound pressure level from these power balances is shown to be difficult, at least at 1 m from the surface. A simple relationship between acoustic intensity and sound pressure level in the frequency domain has been found.
Citation: Abe, T. and Anderton, D., "Digital Acoustic Intensity Techniques in Gasoline Engine Noise Studies," SAE Technical Paper 820363, 1982, https://doi.org/10.4271/820363. Download Citation
Author(s):
T. Abe, D. Anderton
Pages: 17
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the Engine Noise Symposium-P-106
Related Topics:
Data acquisition and handling
Acoustics
Vibration
Noise
Pressure
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