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Sound intensity homework

  1. Feb 9, 2004 #1
    If 2 flutist play their instruments together at the same intensity, is the sound twice as loud as that either flutist playing alone at that intensity? Why or why not?
  2. jcsd
  3. Feb 9, 2004 #2


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    No, because the ear's response to sound pressure is not linear. Doubling the sound pressure does not double the perceived loudness.

    - Warren
  4. Feb 10, 2004 #3


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    The generally accepted level of change required to be perceived as a doubling/halving of sound level is 10 decibels.

    Doubling the sound energy by adding the second instrument results in an increase of only 3db.

    You can use the formula to go from a linear scale to logarithmic.

    10 * log(change in power)

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