amplitude between zero crossings


    Oct 16 2008 | 2:27 am
    hi,
    i would like to get the peak amplitude (or rms - or both :) between individual zero crossings.
    that is, have any wave input (complex, sine whatever), then measure the amplitude (peak/rms) between every time it crosses zero..
    thnaks,
    this is tied in with my earlier quest for time between zero crossings and i was hoping that the answer to that would help me with this, however it doesnt :P https://cycling74.com/forums/index.php?t=msg&goto=154139&rid=7826&S=5252dd7a8a8117c924d437ab0d09a27d#msg_154139

    • Oct 16 2008 | 2:29 am
      oh, i am on windows xp with max 4.5
      :)
    • Oct 20 2008 | 11:29 am
      any help at all >.<
      i am trying to create a patch that will process a complex wave input, using the time between zero crossings (converted to freq) as an input to a cycle~ ,then use an amplitude setting from within the appropriate section of the wave/input to control the cycle~ amplitude..
      effectively smoothing out all those nasty jagged bits in a complex wave :P
    • Oct 21 2008 | 7:02 pm
      This should simple enough in c++ but in maxmsp I find these seemingly trivial things to be difficult.
      May I suggest tracking RMS using average~ in RMS mode (and perhaps low pass filtering the input signal). Not quite what you're looking for but I think the result will be similar.
      Ross
    • Oct 21 2008 | 7:03 pm
      *duplicate post*