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Why does a tubes length affect wavelength of soundwave?

  1. Feb 3, 2007 #1
    In a wind instrument for example. Wouldn't a longer tube simply allow more compressions/rarefactions to be moving through the tube at any one time? Why does the wavelength change?
  2. jcsd
  3. Feb 3, 2007 #2

    Doc Al

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    Last edited by a moderator: Apr 22, 2017
  4. Feb 3, 2007 #3


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    If one tube has length L, and another tube has length L+l,where l is the wavelength, then L+l has one more wave in the tube, but the speed of propagation (speed of sound) is a property of the gas in the tube, not the length of the tube.
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