adsr~ and filtergraph~


    Dec 22 2008 | 12:59 pm
    Hi there,
    probably an easy for one for you guys.
    I am trying to apply filtering (filtergraph~ and biquad~) to some audio where the cutoff frequency is controlled by an adsr~ object.
    Now, the output of adsr~ is a signal, when feeding this into the filter cutoff frequency inlet of filtergraph nothing seems to happen.
    I reckon, this is quite a standard scenario and I am wondering what I am doing wrong. The filtergraph help mentions int/float inlets rather than feeding signals.
    cheers, nick

    • Dec 22 2008 | 2:37 pm
      Use snapshot~ between the envelope output of adsr~ and the desired input of filtergraph.
      Or use a paralell line taht you feed with what your ramp times should be.
      Best, J
    • Dec 22 2008 | 2:43 pm
      the problem is that you are feeding a signal into an inlet that accepts max-messages (control data). you'll have to find another way of doing what you're attempting.
      i would recommend looking int the filtercoeff~ obj.
      jml
    • Dec 22 2008 | 2:45 pm
      note that although jko's example is demonstrative (and a good exercise of sampling audio at control rate), it is computationally inefficient. you'll want to keep as much in the signal domain as possible in the long run.
      jml
    • Dec 22 2008 | 2:58 pm
      Quote: jml wrote on Mon, 22 December 2008 15:45 ---------------------------------------------------- > note that although jko's example is demonstrative (and a good exercise of sampling audio at control rate), it is computationally inefficient. you'll want to keep as much in the signal domain as possible in the long run. > > jml ----------------------------------------------------
      Yeah, that's reasonable I guess. I would use snapshot~ only for UI visualization purposes...