−a*b
products and scaling= -(a × b)Multiplies the inputs and turns the sign, so the product works the other way.
SEE IT MOVE
Computed in your browser with KINSPIRATION's FUN engine. Drag on the map to try any a and b.
WHAT TO KNOW
INPUTS
Symmetric, as a*b: usually a modulation and the amount that scales it.
OUTPUT RANGE
-1..+1
USE IT FOR
An inverted, scaled modulation; a negative constant switched on by a state: the factory's Atk State × 0.99 gives -0.99 while the AMPENV attacks and 0 afterwards (45 slots).
WATCH OUT
The sign is turned: two negative inputs give a negative output here, the opposite of a*b.
IN THE FACTORY PROGRAMS
In 46 FUN slots of the factory programs: FUN1 45, GFUN4 1. GFUN2 and GFUN4 are the program's global FUNs.
MOST USED INPUTS (a, b)
WHERE THE OUTPUT GOES
FIND THEM ON YOUR K2700
HOW TO ON YOUR K2700 · 1517 Lost Souls
Lost Souls uses -a*b on its layer 1: see it, then where it goes.
In Program mode choose 1517 Lost Souls (KEYPAD, 1517, ENTER).

Press EDIT, then MORE and LFO+. The FUN1 row: Input a Atk State, Input b 0.99, Function -a*b.

Where it goes: MORE, DSP MOD. On the TP Wid2 row Source 1 is FUN1, with a Depth of 10.00 oct.

Play notes and let them go: the TP Wid2 row follows FUN1, -(Atk State × 0.99).
Press EXIT and answer NO to leave the factory program as it was, or SAVE to keep your version on a USER ID.