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KOACH · FUNs · Level 4 · Curves · Lesson 6 of 10

warp1(a,b)

shapes and warps= b × (1 / a) while |b| <= a, then falling back to 0 at |b| = 1

Vari-slope: a reshapes b, steepening it up to plus or minus a and folding it back beyond; a sawtooth b becomes a triangle at a = 0.5.

SEE IT MOVE

SCOPE · LAST 2 S
THE MAP · OUTPUT FOR EVERY a AND b
a0.00
b0.00
OUTPUT0.00

Computed in your browser with KINSPIRATION's FUN engine. Drag on the map to try any a and b.

WHAT TO KNOW

INPUTS

a: the slope, a constant 0..1 (1 leaves b as it is, 0 gives two falling ramps); b: the moving signal, usually an LFO.

OUTPUT RANGE

-1..+1

USE IT FOR

Morphing an LFO between saw and triangle with a controller as a; a peaked response: with a = 0.5 a unipolar b is highest at the middle of its travel (mid velocities get the most).

WATCH OUT

a below 0 counts as 0, which gives two falling ramps; at a = 1 b passes unchanged.

IN THE FACTORY PROGRAMS

In 1 FUN slot of the factory programs: FUN1 1. GFUN2 and GFUN4 are the program's global FUNs.

MOST USED INPUTS (a, b)

ON, Atk State1

WHERE THE OUTPUT GOES

FIND THEM ON YOUR K2700

647 9 1/2 Yard Basslayer 8 · FUN1 · a ON, b Atk State

HOW TO ON YOUR K2700 · 2046 Editor Template

The factory does not route warp1(a,b) to a sound on its own: set one up on 2046 Editor Template and hear it on the pitch.

  1. In Program mode choose 2046 Editor Template, a plain one-layer program to build on (KEYPAD, 2046, ENTER).

    Program mode with 2046 Editor Template

  2. Press EDIT, then MORE and DSP MOD. On the Pitch row set Source 1 to FUN2 and its Depth to 1200 ct: FUN2's result, −1 to +1, now bends the pitch up to an octave either way.

    The DSP MOD page of 2046 Editor Template, layer 1, the cursor on Depth (1200 ct)

  3. MORE, then LFO+. On the FUN2 row set Input a to 0.50 and Input b to LFO1.

    The LFO+ page of 2046 Editor Template, layer 1, the cursor on Input b (LFO1)

  4. Move to Function and turn the Alpha Wheel to warp1(a,b).

    The LFO+ page of 2046 Editor Template, layer 1, the cursor on Function (warp1(a,b))

  5. Hold a note: LFO1's slow sine comes out doubled while it is small and folded back toward 0 at its peaks, so the pitch makes two humps where the sine made one.

  6. Press EXIT and answer NO to leave the factory program as it was, or SAVE to keep your version on a USER ID.