Possible to calculate when am distorton occurs in compression?

    Dec 09 2009 | 2:36 pm
    When having release times less than 5 ms and high attack rate, compression starts to sound ugly. I dont understand exactly what happens though, except that the makeup gain is going up and down so fast that modulation sounds occur.
    anyone explain this in a good way?

    • Dec 09 2009 | 3:01 pm
      a dynamics effect such as compressor or limiter contains a
      change of gain.
      and any change of gain is audible when its speed comes in
      the range of the audible frequency range.
      that is why many dynamics effects are programmed to "look
      forward" and work somehow "adaptive", similar to the
      way how you use highpass filtering to get rid of DC offset.
      take the orginal audio and a proessed file of you 5 ms attack
      compressor and look at the waveform in some editor program,
      that should give you a good .. err.. picture of what happens.