pan law needed; suffering from loudness bump


    Apr 17 2012 | 7:08 pm
    Hi
    I am using the phase inlet of two cycle~ objects to control stereo-spread of a sound source, but it appears I am missing some maths.....it functions ok, but there is a slight increase in loudness when the slider value is near the centre, tapering off at either min or max value; the patch below illustrates the problem. I would like to achieve a stable and uniform loudness level across the parameter range, from mono to stereo.
    thanks
    Brendan

    • Apr 17 2012 | 7:52 pm
      Apparently ignorance IS bliss.....I swapped the phase-inlet control for a simple line ramp, to control the amplitude scaling of the channels and the loudness bump is gone
    • Apr 18 2012 | 1:22 am
      Would you mind posting a patch showing your solution? I'd love to see it - I don't quite follow your explanation, but it sounds useful. Thanks!
    • Apr 18 2012 | 3:22 am
      If you look here on page 74 it should help http://aspress.co.uk/ds/pdf/pd_intro.pdf
    • Apr 18 2012 | 11:11 am
      @ehdyn
      thanks for the great source; very 'layman' friendly!
      @Steven
      Sure, this patch illustrates how curved and straight line scaling of amplitude effects panning and also "stereo spread" to some extent, but in this example patch I just have a simple mono source going both left and right. But in my granulator it works like a dream......yummy stereo multigrain goodness!
      Brendan
    • Apr 19 2012 | 11:38 am
      Thanks Brendan, much appreciated. I understand the general concept of "pan law" and have used various implementations - I just didn't follow the specifics of the explanation in your original post.
    • Apr 20 2012 | 1:32 am
      Cool, glad it helped - yeah thats a good resource.
      That site and an old emu manual is all anybody really needs.