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Frequency-temporal modulations?

  1. Mar 10, 2013 #1
    The problem statement, all variables and given/known data

    I've been reading up papers about mapping sounds to their auditory representation, and I'm a bit confused about one bit.

    They've given some diagrams of sound waveforms spectral with the y-axis being spectral frequencies, and the x-axis being temporal modulations.

    What are temporal modulation frequencies in this case? I've been trying to find a simple, down to earth explanation on the net, but there seems to be a few different answers, and I'm not quite sure which one it is, if any.

    Here is an image of what I'm on about.


    If someone could give me an answer which an everyman can understand, I would be most grateful!

    "Spectral frequencies between 2500 and 5500 Hz, and temporal modulations in the range 1–16 Hz" - if that helps.

    Thank you!
  2. jcsd
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