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. Author manuscript; available in PMC: 2008 Apr 15.
Published in final edited form as: J Acoust Soc Am. 2007 Oct;122(4):2154–2173. doi: 10.1121/1.2769625

FIG. 1.

FIG. 1

Theoretical standing waves in a uniform cylindrical tube. (A) Spatial variations in sound pressure magnitude (top) and phase (bottom) at a given frequency for different values of B/A, the ratio of the amplitude of a sound wave reflected from the termination to the incident sound wave amplitude. (B) Computed broadband sound pressure spectra at different locations for B/A=0.7. If B/A changes slowly with frequency, the spectra are equivalent to the spatial sound pressure distribution—see lower horizontal scale in wave number k=2πf/c.