SOUND RADIATION BY A VIBRATING CIRCULAR MEMBRANE EMBEDDED INTO RIGID BAFFLE IN THE VICINITY OF THE THREE-WALL CORNER

摘要

The analytic calculation method of the modal acoustic impedance radiated by a vibrating circular membrane into the region limited by the three rigid baffles arranged perpendicularly to each other forming the three-wall corner has been presented in this paper. The acoustic waves have been generated by some time-harmonic vibrations of the membrane. The modal acoustic impedance has been calculated using the impedance approach. The acoustic damping has been neglected. The Neumann boundary conditions and the sharpened Sommerfeld radiation conditions have been satisfied. The influence of the spatial configuration of the baffles has been included using the mode shapes of the membrane.