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Sound interference

  1. Jan 11, 2014 #1
    I cannot understand the following:

    Imagine you have 2 sound sources and build up an interference experiment, where far away from the sources you have a receptor. Imagine you put the receptor at the same distance from the sources. If you turn off one source the receptor will receive a sound of intensity I, if you turn both on the intensity will be 4I, why is that? I can understand that for the light experiment, as the intensity depends on the square of the electric field, but how can I expain that for the sound?
     
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  3. Jan 11, 2014 #2

    Simon Bridge

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    What is the relationship between intensity and amplitude for sound?
     
  4. Jan 11, 2014 #3
    I don't know :(
    Is there a physical formula that relates the amplitude with the intensity?
     
  5. Jan 11, 2014 #4

    Simon Bridge

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