INTERNET Co. is offering its effect plug-in F-REX for $19 USD until September 10, 2018 (Regular Price: $96 USD).
F-REX can analyze the sound that's being played in real time into the three parameters 'Gain', 'Frequency' and 'Panning' and graphically visualize them.
You can control independently the inside and the outside area of the specific part focused by panning and frequency. You can apply effects (compressor and reverb) to inside and the outside area and adjust volume and panning intuitively.
F-REX is available in VST and AU plug-in formats for Windows (7-10) and Mac OS X (10.8-10.13).