ABSTRACT
In many aircraft, a major component of the interior sound pressure field is due to structure-borne noise from the engines. For example, the rotating blades in turboprop engines generate low frequency, high displacement acoustic fields that couple (nonlinearly) with the fuselage dynamics. These mechanical vibrations produce, through interactions with the air inside the cabin, interior sound pressure oscillations. If these acoustic pressure fields are left uncontrolled, they can lead to undesirable conditions for the passengers.
