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Homework Help: Speaker Beats

  1. Jun 11, 2005 #1

    DDS

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    A speaker at the front of a room and an identical speaker at the rear of the room are being driven by the same oscillator at 464 Hz. A student walks at a uniform rate of 1.67 m/s along the length of the room. How many beats does the student hear per second?

    I have gotten this far its just i dont know where to go from here..simply i dont no how to find v, is it jsut speed of sound ??

    F=464 Hz
    u=1.67 m/s

    Flow=f(1-u/v)
    Fhi= f(1+u/v)

    Fbeat=/ Fhi - Flow / = (2*f*u)/v

    Whats v??
     
  2. jcsd
  3. Jun 11, 2005 #2

    DDS

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    does anyone know how to determine the value of v
     
  4. Jun 12, 2005 #3

    DDS

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    nvm i got it
     
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