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Structural resonance

  • 19-11-2009 4:00pm
    #1
    Sunn
    Closed Accounts Posts: 391 ✭✭


    I am building a (type of)xylophone using metal bars. I want to determine the pitch based on the length, or in other words I want a pitch series of D.F.A,C etc but obviously I need a specific length in order to determine the pitch.

    I have found an equation but I am not really sure how it works, if in fact that is the formula (although I am sure it is correct)

    ωn = (2n + 1)2/9.

    I think N related to the Node (which is a constant of 1 as the metal bar is open at both ends) But I can't find any information on it.


    Any help would be greatly appreciated.


Comments

  • #2
    Fringe
    Registered Users, Registered Users 2 Posts: 1,082 ✭✭✭Fringe


    I'm going to take a guess and say that n is the harmonic and w is the angular frequency.

    w = 2(pi)f where f is the frequency of the sound wave.

    There's no length anywhere so dunno what you'd do about that or if the equation even makes sense.


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