Does anyone know how the JS Volume Adjustment plugin works? Does it act like a limiter? I had somewhere seen or heard that it was bing used as a gain staging plugin for setting initial gain levels on tracks. Does it actually reduce levels while keeping dynamics or does it more squash the whole to match specified levels?
I would assume is simply a volume linear adjustment where a -3dB adjustment reduces every single sample by -3dB (exactly like an analog volume control).
Mathematically, it's multiplication. If you multiply each sample by two that's +6dB and multiplying by 0.5 is -6dB, etc.
An amplifier works similarly. A 20dB amplifier multiplies the input voltage by 10 (both the negative & positive halves of the waveform).
The Volume Adjustment slider is a straight multiply. Then whatever comes out of that is hard limited (clipped) at the level set by the Max Volume slider.
The code looks a little complicated because of the smoothing to keep it from clicking when you automate, but that’s all that happens. I set mine up so that the defaults are 0db gain and +150db limit so that it pretty much only clips if I ask it to.
JS Volume Adjustment
Linear Mode
