Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Sound Wave Cancellation

  1. Oct 14, 2005 #1

    When two waves cross each other's path, even if they are identical, they won't just disappear. They'll set up standing waves where they are interfering provided they are identical. Beyond that they will continue on their path. There will be no sound wave cancellation.
  2. jcsd
  3. Oct 15, 2005 #2
    That A pressure wave will not cancel, in absolutia I would agree, except in mathematics where 'absolutia' is found, in reality? NOT absolutely, But Mostly.
  4. Oct 16, 2005 #3
    Where does the energy in the sound waves go?
  5. Oct 16, 2005 #4
    Cancels out, In Math its' a Minus one, meeting a Positive one, and the result is Zero, in Reality 0.99999∞+1 ≡ 0.99999∞-1 as Individual Event histories, hence There is a Resultant of One, just how large that one is, is another story altogether.

    But, that is Reality.

    If a Negative trough meets it's opposite and equal Peak they will (should) cancel out, How 'perfectly-well' that can be done, in reality is 'fun' for some folks.
  6. Oct 16, 2005 #5
    You're joking right?

    Two individual sound waves transport a net positive energy. Their energies can't just cancel out.
  7. Oct 16, 2005 #6
    They are waveforms, they have shape, they can be equated as 'equal and opposite' in 'shape and form' as to cancel.

    The reality one is simply quantum physics, how finely it needs be cut as to ensure that everything remains idiosyncratic, and asynchronus, both are Math, so Both show Ideals.

    IN Physical reality I have watched it on television, it works, Almost totally.

    Is this going to continue on, forever?
  8. Oct 16, 2005 #7
    They will not cancel. Try imagining two waves of equal amplitude and frequency with a phase difference of 180 degrees. They will create standing waves where they intersect. At other points, they will simply continue along their path.

    What you are suggesting would violate the first law of thermodynamics.

    Quantum Physics has nothing to do with sound waves, atleast not on macroscopic levels.

    TV =/= reality.

    If you want to quit, say so. I like to have the last word though. :smile:
  9. Oct 16, 2005 #8
    O.K. I'll play your game .. .. ..my rules though.

    {Oh yes, they are Pressure waves, Not electrical or EMR right?}

    To play this game, first you must "Master the Game" by making a Move, to prove you are a Master, though, you must not make any moves.

    G'ee head .. .. .. ..
  10. Oct 16, 2005 #9
    I don't accept your rules.

    Don't post off-topic comments please
    Last edited: Oct 16, 2005
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Sound Wave Cancellation
  1. Sound waves as energy? (Replies: 13)