Another user recommended this FX chain to me, and they would place it on their master bus/ master output chain before the final StereoOutput (speakers). They couldn't really explain exactly what it was doing or how it technically worked, they just said something like it enhances the stereo in a mix, makes things clearer/louder.
Not a great explanation, but this is all I have. If anyone has any ideas or thoughts, please share them.
This setup splits the L and R audio channels then completes the following equation:
L+R = Mid
L-R = Side
You can then process the mid (mono) part of your signal separately to your sides (the stereo information).
After that, it then combined the two back to LR stereo format by completing this equation:
M+S = L
M-S = R
As mentioned, you can then control the L and R channel amounts for yourself.
I've started not doing that second equation, and instead controlling the Mid/Side amounts instead. (As seen in my mastering tutorial on the Audiotool YouTube channel)
The way this can make stereo seem clearer etc. is by using a curve EQ to remove everything below 250hz (roughly) from the sides channel as you tend to not want/need bass in stereo. This in turn allows you to boost the same frequency range slightly in the mods to compensate for this loss of bass.
that is a mid-side eq; its useful for tweaking the stereo field on a stereo signal
the top eq is the mid signal and the bottom eq is the side signal
it looks like it also grants you control over the left and right volumes at the end
you can replace the graphical eqs with curves for greater control
you can also condense it if you dont want L/R control by removing everything after the two eqs except for one merger and the panorama but inverting only the panoramas L factor control and connecting the top part eq straight into the merger and the bottom part eq into the panorama which then goes into the merger
This setup splits the L and R audio channels then completes the following equation:
L+R = Mid
L-R = Side
You can then process the mid (mono) part of your signal separately to your sides (the stereo information).
After that, it then combined the two back to LR stereo format by completing this equation:
M+S = L
M-S = R
As mentioned, you can then control the L and R channel amounts for yourself.
I've started not doing that second equation, and instead controlling the Mid/Side amounts instead. (As seen in my mastering tutorial on the Audiotool YouTube channel)