pd-motex binary package in Ubuntu Focal amd64

 A collection of externals from Iain Mott that mostly provide some
 math functions for Pure Data:
 .
  * polygate~ - switch between multiple signal inputs, variable
                fade rate both linear & equal power
  * shuffle - a no-repeat random generator, outputs numbers within a set range
  * pan~ - equal power stereo panning
  * system - sends a system message to the console
  * ln~ - natural log + inverse
  * rec2pol~ - convert rectangular coordinates to polar eg. can be used
               to convert sine & cosine rfft~ output to phase & magnitude
  * pol2rec~ - inverse of rec2pol~
  * getenv - Sends value of an environment variable argument on bang

Source package