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Article
Computer sound card assisted measurements of the acoustic Doppler effect for accelerated and unaccelerated sound sources
American Journal of Physics
  • Thomas J. Bensky, California State University - Hayward
  • S. E. Frey, California State University - Hayward
Publication Date
12-1-2001
Abstract

An approach to experimentally measuring the speed of a moving object by direct application of the Doppler effect for sound is discussed. The method presented here uses a Windows computer and sound card to record Doppler shifted sound from a moving source. This sound card approach allows for direct acquisition of Doppler shifted sound intensity as a function of time, affording much analytical and pedagogical freedom in undergraduate lab instruction. In addition, the acquisition of such data allows for the experimental study of not only constant velocity sound sources, but of accelerated sound sources as well.

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Publisher statement
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Citation Information
Thomas J. Bensky and S. E. Frey. "Computer sound card assisted measurements of the acoustic Doppler effect for accelerated and unaccelerated sound sources" American Journal of Physics Vol. 69 Iss. 12 (2001) p. 1231 - 1236
Available at: http://works.bepress.com/tbensky/11/