Date of Award
Mechanical, Automotive, and Materials Engineering
Novak, Colin (Mechanical, Automotive, and Materials Engineering)
CC BY-NC-ND 4.0
An innovated design for the automotive subwoofer system is proposed where the rear glass functions as the dynamic driver of the subwoofer system. The rear glass is mechanically excited using two piezoelectric actuators located along the bottom edge. The glass is fixed along the top and is free to move along the other three sides. The actuators exert a force perpendicular to the glass surface which is proportional to the low frequency input signal taken from the audio system. A study was undertaken to evaluate and compare the acoustic performance and characteristics of the rear glass subwoofer system relative to a conventional subwoofer system. Acoustical properties including frequency response, total harmonic distortion, and loudness are characterized and compared for both subwoofer designs. A subjective evaluation was conducted to correlate with objective measurements. An evaluation procedure suitable for evaluating the glass subwoofer system performance is recommended for future implementation.
Samardzic, Igor, "Impact of Automotive Glass Subwoofer Technology on Vehicle Interior Sound" (2011). Electronic Theses and Dissertations. 207.