O3 -- Air band gain M4L device

A Max for Live device for air band gain:

1. Simple and easy to use, One-knob design;

2. Significantly boosts the audio's air band;

3. De-esser switch and strength knob help reduce the excessive sibilance that comes with boosting the air band;

4. Multi-information dynamic graphic display.

V1.2 update:

Removed "Bypass", "Spectral" and "De-Esser" switcher;

Redesign the UI;

Redesign internal functionalities.

Thanks to the following friends for the tips：

Dotorikris $5

Joseph1998.collins $5