duration in milliseconds
amplitude of the wave, between 0 and 100
stereo balance. 50 = both speakers equally, 0 = all to the left, none to the right, 100 = all to the right, none to the left.
The balance argument was added on December 13, 2021 (dub v10.5)
Makes some old-school style sound effects. Play with them to see what they actually sound like.