The PhD thesis dealt with the auditory perception of sounds radiated from a vibrating plate inside a damped cavity. It focused on the adjustment of computation efforts with the prospect of using vibroacoustic simulations to enhance the quality of the radiated sounds from the design stage of structure. Also, when sounds are synthesized from computations in frequency under vibroacoustic prediction tools, computational efforts are inherently dependent on two first restrictive parameters: the maximum limit frequency and the frequency step. Thus, as a first stage, these frequency parameters were aimed at being adjusted up to a value which would allow a conservation of the perceptual outcomes concerning an optimal structural design, originally obtained from the auditory evaluation of a set of recorded sounds.