Abstract
Effective aircraft interior noise reduction measures require an in-depth understanding of the operational noise and vibration fields as well as the intrinsic system characteristics. The former requires detailed mapping of the in-flight sound and vibration responses, whereas the latter requires the proper modelling of the vibro-acoustic system behaviour. The latter is discussed in this paper where frequency-domain system identification is applied to acoustical transfer functions, measured in a fully-trimmed aircraft cavity.
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