Amplitude Modulation Method for Measuring Linear Excursion of Loudspeakers

Paper #:
  • 910650

Published:
  • 1991-02-01
Citation:
Clark, D., "Amplitude Modulation Method for Measuring Linear Excursion of Loudspeakers," SAE Technical Paper 910650, 1991, https://doi.org/10.4271/910650.
Author(s):
Pages:
11
Abstract:
A simple method for measuring the peak linear excursion capability (Xmax) of loudspeaker drive units is presented. The method measures the acoustic amplitude modulation of a small high-frequency signal by a very low-frequency signal. The low-frequency signal is increased to produce a target peak-to-peak modulation. A physical measurement of the peak-to-peak diaphragm excursion is made and defined to be twice Xmax.
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