Shotgun Blast

How it's made

Source

burning propellant expels a shot charge from the muzzle. The pressure step is a 0.2 ms broadband crack (ballistic shock, 1.5–10 kHz) that dies within about 25 ms, followed by a gas-expansion roar.

Body

the muzzle blast is low-mid heavy noise (200–900 Hz) whose bandwidth collapses as the gas cools (about 2.6 kHz down to 250 Hz in 0.35 s), over a sub thump falling 120 → 42 Hz in 0.2 s.

Envelope

crack 25 ms, body 0.3 s, thump 0.25 s. Then an echo tail: reflections from distant surfaces arrive as dark, decorrelated noise bursts at 0.11–0.55 s, each duller and quieter, fading by 1.2 s.

Variation

`rng` varies the burst texture and reflection timing; power sets level of the body and thump, thickness the low-mid weight, echo the reflection level, crack the brightness of the transient.

Layers

crack, roar, thump and echo are separate layers mixed with a wide stereo tail and a centred attack.

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