While I was co-teaching an introductory course in musical acoustics a few years ago, our class investigated several pieces of equipment designed for audio purposes. One piece of such equipment was a pair of noise-canceling headphones. Our students were curious as to how these devices were in eliminating background noise and whether they indeed block low-frequency sounds as advertised.

Topics
Electroacoustics, Active noise control, Musical acoustics, Sound level meters, Acoustic noise measurement, Educational assessment, Teaching, Laboratories
© 2013 American Association of Physics Teachers.
2013
American Association of Physics Teachers
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