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Computer sound card assisted measurements of the acoustic Doppler effect for accelerated and unaccelerated sound sources
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4.We chose 1000 Hz for a practical reason: It represents about the highest frequency that students found tolerable to listen to while performing this lab. As a referee for this paper pointed out however, the use of higher (5000–10 000 Hz) frequencies could lead to better beat frequency determination and cleaner Fourier spectra.
5.R. A. Serway, Physics for Scientists and Engineers (Saunders College Publishing, Philadelphia, PA, 1996), 4th ed., p. 495, Problem 40.
6.We found several other sound recording packages at the web sites http://www.download.com and http://www.shareware.com.
7.C. Petzold, Programming Windows (Microsoft Press, Redmond, WA, 1996), 5th ed., Chap. 22.
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