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A Novel Glass Laminated Structure for Flat Panel Loudspeakers

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A new, patented “sandwich structure” has been developed for various audio applications, in which thin glass sheets are laminated with a special PVB (Polyvinyl Butyral) film to eliminate typical acoustical weaknesses of monolithic glass and standard laminated solutions. The glass improvements include suppression of ringing of the audio signal, and a much more flexible and lightweight glass structure. It results in flatter frequency response (both on-axis and 180° power response) and better transport of vibrations in the glass surface In addition; better acoustical sensitivity and mechanical resistance are achieved. In this paper, after defining the structure of the developed laminated glass solution, we compare its performances to previously try monolithic and laminated glass solutions. We also emphasize the key factors influencing the final acoustical properties. Finally, we introduce potential application fields for the developed structure.

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