*~IMPACT FORGE~*

Hertz Contact → Modal Resonance_
*** THE FORCE IS NOT THE SOUND — IT EXCITES THE MODES *** van den Doel & Pai *** FoleyAutomatic SIGGRAPH 2001 *** HERTZ 1882 *** d = πf·tanφ + 1/τ0 *** HIGHS DIE FIRST *** NOTHING SWEEPS ***
● THE PROJECTILE
60mm
30m/s
45%
50%
30%
1 AIR
2 IMPACT
3 TARGET
4 MATERIAL
5 RESULT
6 DEBRIS
MIX
BUILT: the approach → the contact → the target hit.  NEXT: what it's made of → what the projectile does → the aftermath.
0%
← OFF by default. A flyby is a separate event from the hit.
 
22ms
1.2m
35%
1.10
WHOOSH Turbulent wake — the body of the flyby
55%
0.60x
30%
15%
20%
25%
ZIP Aeolian vortex tone — f = 0.2·v/d — the whistle 8.4kHz
0%
1.00x
0%
45%
12%
18%
PUSH Displaced air — the low wumph of something heavy arriving
30%
90Hz
2.40
40%
35%
15%
WAVEFORM
Ready IMPACT FORGE v5 — stages 1-3