Characteristics of Non-Stationary Sources of Wind Noise Measured with a Surface Pressure Array

Paper #:
  • 2017-01-1785

Published:
  • 2017-06-05
Citation:
Bremner, P., Clifton, S., and Todter, C., "Characteristics of Non-Stationary Sources of Wind Noise Measured with a Surface Pressure Array," SAE Technical Paper 2017-01-1785, 2017.
Pages:
9
Abstract:
Measurements of interior wind noise sound pressure level have shown that dBA and Loudness are not adequate metrics of wind noise sound quality due to non-stationary characteristics such as temporal modulation and impulse. A surface microphone array with high spatio-temporal resolution has been used to measure and analyze the corresponding non-stationary characteristics of the exterior aero-acoustic loading. Wavenumber filtering is used to observe the unsteady character of the low wavenumber aero-acoustic loading components most likely to be exciting glass vibration and transmitting sound.
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