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Frequency of a quacking Duck

  1. Dec 30, 2003 #1
    I recorded the sound of a Duck quack (kwack), then, using my frequency meter I was able to determine that the duck quacked at 479 Hertz, for this particular Duck. I am thinking of trying to determine the frequency of a Geese "honk" next. Stay tuned.
     
  2. jcsd
  3. Dec 30, 2003 #2
    u ahve way too much time on your hands! but its very interesting none the less.
     
  4. Dec 30, 2003 #3

    Njorl

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    I would think that a duck's quack would have a very noisy signature. I bet the 479 hertz is just the largest component. Can you filter it out and repeat the measurement?

    Njorl
     
  5. Dec 30, 2003 #4

    Monique

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    Do female Ducks quack at a higher frequency?
     
  6. Dec 31, 2003 #5

    Ivan Seeking

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    Only if you pull their tail

    timejim,
    Yes, our quack is made up of many frequencies. You can actually hear this since the duck does not produce a perfect tone. Listen to a 479 Hz tone, say using a tone generator chip or a 555 timer from Radio Shack; this sounds nothing like our duck...even if modulated in a quacking manner.

    You could determine the dominate frequencies with the right equipment; you might consider a tuned, resonant circuit to check for the strength of each frequency - really the sound version of a radio which selects specific frequencies in the radio part of the EM spectrum. Your frequency meter is likely showing the RMS average of all frequencies present; with the dominant frequency(s) being the largest contributor(s).
     
  7. Dec 31, 2003 #6
    Then you can let us know if they really do or do not echo.
    If not, you can figure out why.
     
  8. Dec 31, 2003 #7

    Ivan Seeking

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  9. Dec 31, 2003 #8
  10. Jan 5, 2004 #9
    just give me the sound file. I'll post the FFT for everybody...
     
  11. Jan 18, 2004 #10
    They don't quack unless the male duck gives them "quacking" permission! Har har har.
     
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