THE VIRTUAL MIXER
Compressor / Limiter Window

For Compressor/Limiters, if volume is front to back the sphere will bounce front and back like a VU meter. The louder parts of the sound will bounce forward and smash into the threshold, which stops the sound from getting too loud. The sphere will stop right at the threshold if it is a limiter. It will go a little further based on a ratio setting if it is a compressor.