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Homework Help: Frequency of sound coming from speakers

  1. Apr 18, 2010 #1
    1. The problem statement, all variables and given/known data

    You are L = 3 m away from a pair of speakers playing a pure tone separated by a distance of d = 1 m. If you walk from the center to a distance of y = 0.75 m, you hear the intensity decrease to zero, then increase all the way back to the initial volume.

    2. Relevant equations

    frequency(observed) = frequency(emitted) x (1 + u/v)

    3. The attempt at a solution

    I have no idea where to get started!
  2. jcsd
  3. Apr 19, 2010 #2
    what is the question?
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