Abstract
A generalized differential quadrature method is developed for solving the sound radiated from the forced vibrating rectangular plates with mixed boundary conditions in this paper. The fluctuation strength of the radiated sound, which is modulated by another sound near the plates, is studied. The effects of the modulation frequency and the modulation degree on fluctuation strength are revealed. The effects of the radiated sound frequency and the structural modal density are also studied and compared. The numerical results are presented to show the characteristics of the fluctuation strength of the modulated sound radiated from rectangular plates with mixed boundary conditions.
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