Check out this little trick I discovered!

[steve]

Therefore L(new) = 1.5L - 0.5R

Thanks Bill - yes I miscalculated Thunderbolts' formula

Note that your version is not very different from Steve's - his is 100, -30, yours is 100, -33. Might be easier in the long run just to edit Steve's "Wide Stereo" preset.

Thanks again Bill - you've saved me a lot of typing.
For adding new presets I'd suggest the easiest way is adding them to the end of the list (so as to avoid putting the preset descriptions and (case) numbers out of sync.

So with the latest version of the Channel Mixer:

Code: Select all

;control preset "Presets" choice "Use Custom,Mono (Average),Mono (Both Left),Mono (Both Right),Extra Narrow,Narrow Stereo,Wide Stereo,Extra Wide,Centre to Left,Centre to Right,Swap Left/Right,Vocal Remover (L/R invert),Vocal Remover (mono),Invert Left,Invert Right,NEW PRESET" 0

Code: Select all

(setq channels
	(case preset
	  (1 (list 50 50 50 50)) ; Average
	  (2 (list 100 0 100 0)) ; Both Left
	  (3 (list 0 100 0 100)) ; Both Right
	  (4 (list 70 30 30 70)) ; Extra Narrow
	  (5 (list 85 15 15 85)) ; Narrow Stereo
	  (6 (list 100 -30 -30 100)) ; Wide Stereo
	  (7 (list 100 -60 -60 100)) ; Extra Wide
	  (8 (list 50 50 -50 50)) ; Centre to Left
	  (9 (list 50 -50 50 50)) ; Centre to Right
	  (10 (list 0 100 100 0)) ; Swap Left/Right
	  (11 (list 100 -100 -100 100)) ; Vocal Remover L/R invert
	  (12 (list 100 -100 100 -100)) ; Vocal Remover mono
	  (13 (list -100 0 0 100)) ; Invert Left
	  (14 (list 100 0 0 -100)) ; Invert Right
	  (15 (list ..............)) ; NEW PRESET CODE
	  (T (list left-mix-L left-mix-R right-mix-L right-mix-R))))