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Matlab :detect frequency of dtmf tone (.wav )file

  1. Dec 5, 2008 #1
    a question in matlab ?
    i have a DTMF tone as a ( .wav ) file and i want to detect
    its frequency then i want to know the number which
    the tone belong to

    note i have a .wav file and i want to detect it

    i am trying forrier then using "find function "in matlab
    but the result of "find " have a lot of number
    what i can do to solve this problem

    here is my attempt

    freq =find (y)
    Last edited: Dec 5, 2008
  2. jcsd
  3. Dec 5, 2008 #2
    i found another way to know the frequency but i do not konw how to use it
    the methode depend on finding the frequency which has the highest magnitude

    i do not know how to get the highest magnitude
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