Filter sofalizer
  SOFAlizer (Spatially Oriented Format for Acoustics).
    slice threading supported
    Inputs:
       #0: default (audio)
    Outputs:
       #0: default (audio)
sofalizer AVOptions:
  sofa              <string>     ..F.A.... sofa filename
  gain              <float>      ..F.A.... set gain in dB (from -20 to 40) (default 0)
  rotation          <float>      ..F.A.... set rotation (from -360 to 360) (default 0)
  elevation         <float>      ..F.A.... set elevation (from -90 to 90) (default 0)
  radius            <float>      ..F.A.... set radius (from 0 to 3) (default 1)
  type              <int>        ..F.A.... set processing (from 0 to 1) (default freq)
     time                         ..F.A.... time domain
     freq                         ..F.A.... frequency domain
  speakers          <string>     ..F.A.... set speaker custom positions
  lfegain           <float>      ..F.A.... set lfe gain (from -9 to 9) (default 0)


