Modulating with noise


    Nov 28 2011 | 9:42 pm
    I'm attempting to get a noise~ object to randomly modulate a carrier frequ.
    however when i look at the number~ object connected to my noise~ the values are fractional, how can i get these values scaled up to between -1 and 1, the scale~ object seems to not deal with this and as the numbers are erratic coming from my noise~ object i don't know their definate status to put them in...
    any ideas?

    • Nov 28 2011 | 9:58 pm
      Here's the output of the following patch:
      noise~ snapshot~ 200 print
      print: -0.414183 print: -0.754546 print: -0.352599 print: 0.564973 print: -0.001830 print: -0.053008 print: 0.411439 print: -0.608489 print: 0.887208 print: 0.898530 print: -0.574523 print: 0.468049 print: 0.026246 print: 0.100068 print: 0.689515 print: -0.205413 print: -0.584716 print: -0.448394 print: 0.203553 print: -0.628875 print: -0.945678 print: -0.746855 print: -0.032408 print: -0.802336 print: 0.943361 print: -0.795317 print: -0.018370 print: -0.725798 print: -0.917601 print: -0.593779 print: 0.245668 print: -0.399260 print: -0.528563 print: -0.142241 print: 0.759706 print: 0.177278 print: 0.110475 print: 0.559297 print: -0.476256 print: -0.996184 print: 0.999513 print: -0.489165 print: 0.537782 print: 0.080354 print: 0.138551 print: 0.712373 print: -0.198180 print: -0.593108 print: -0.472411 print: 0.163911 print: -0.684142 print: 0.983430 print: -0.833373 print: -0.134551 print: -0.920104 print: 0.809968 print: -0.944335 print: -0.183013 print: -0.906066 print: 0.886506
      These numbers are what you'd expect; noise between -1 and 1. Note that the snapshot~here is behaving like a sample and hold, really.
      If you connect noise~ directly as a modulation source you will get... not "random", but a noise on everything.
      if you want "random" modulation, you'll want noise~ -> sah~ or similar, and then sample the noise at some interval - hell, that interval could be randomized as well.
    • Nov 29 2011 | 12:27 am
      this might be along the way you want to go-- you can also use pink~ instead of noise~ and you might want to low-pass filter the modulating noise instead of using sah~ there's millions of variations; just remember to somehow scale your modulation source to a useful range (using mult and add in this patch, but use scale~ if you've got max 6)
    • Nov 29 2011 | 12:36 am
      this is outstanding! i'm loving the help on this forum, thank you kindly sir!