Filter apulsator
  Audio pulsator.
    Inputs:
       #0: default (audio)
    Outputs:
       #0: default (audio)
apulsator AVOptions:
  level_in          <double>     ..F.A... set input gain (from 0.015625 to 64) (default 1)
  level_out         <double>     ..F.A... set output gain (from 0.015625 to 64) (default 1)
  mode              <int>        ..F.A... set mode (from 0 to 4) (default sine)
     sine                         ..F.A...
     triangle                     ..F.A...
     square                       ..F.A...
     sawup                        ..F.A...
     sawdown                      ..F.A...
  amount            <double>     ..F.A... set modulation (from 0 to 1) (default 1)
  offset_l          <double>     ..F.A... set offset L (from 0 to 1) (default 0)
  offset_r          <double>     ..F.A... set offset R (from 0 to 1) (default 0.5)
  width             <double>     ..F.A... set pulse width (from 0 to 2) (default 1)
  timing            <int>        ..F.A... set timing (from 0 to 2) (default hz)
     bpm                          ..F.A...
     ms                           ..F.A...
     hz                           ..F.A...
  bpm               <double>     ..F.A... set BPM (from 30 to 300) (default 120)
  ms                <int>        ..F.A... set ms (from 10 to 2000) (default 500)
  hz                <double>     ..F.A... set frequency (from 0.01 to 100) (default 2)


