Practical Recommendations For Using Sound Transducers With Glass Memberane As Auditory Display Based On Measurements And Simulations

Abstract

Newly designed vibrating transducers can be used coupled directly to solid surfaces such as wood or glass as plane wave short-distance loudspeakers. Our former analysis evaluated the SolidDrive transducer glued on to glass surfaces of different sizes and forms. Further investigations concluded that these parameters do not influence the transmission and quality of the coupled system significantly. The second part of this investigation included only one size and geometry for further numerical simulations using COMSOL FEM, as well as for acoustic measurements of the transfer function at selected frequencies. Examination of different wall-fixing and mounting methods were also included. Concluding results show that the overall sound quality is inferior to regular loudspeakers, however, using a supplementary subwoofer results in enjoyable music transmission for a short distance. Furthermore, placement of the transducer in the middle of the membrane and having mounting points at the corners are recommended in practical applications