Pillow Hit

How it's made

Source

a stuffed pillow swung into a target. The contact is a slow, soft compression (6–14 ms rise), never a hard click: the fabric and filling absorb everything above ~1.5 kHz of the impact.

Body

the filling plus enclosed air makes a damped low whump, a sine falling from ~110 Hz to ~60 Hz over 80 ms with a 0.1 s decay; a low-passed pink noise layer (300–900 Hz) is the muffled cloth slap.

Air

the squashed pillow pushes air through the weave, a band-limited noise puff (1–3 kHz) that opens after the whump begins (15–25 ms) and fades in about 0.15 s; a few faint feather rustles follow it.

Envelope

whump peaks at ~10 ms and is gone by 0.25 s; the puff is slower and softer than the body.

Variation

`rng` shifts the whump pitch ±4 %, the puff colour and the rustle timing; `softness` lengthens the rise and darkens the noise, `fill` lowers the pitch and lengthens the decay.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.