Spaceship Takeoff

How it's made

Source

a large reaction engine spooling up. Three layers: turbulent exhaust (brown noise for the rumble, pink noise for the roar) and a pitched turbine/drive tone (two detuned band-limited saws plus a sine).

Body

the rumble is low-passed at 70 Hz and opens to ~450 Hz as thrust grows; the roar is a wide band-pass (Q ≈ 0.7) sweeping 250 Hz → 2.4 kHz; the drive tone rises exponentially from ~48 Hz to ~380 Hz through a low-pass that opens to ~3 kHz, with slow 0.4–1 Hz drift giving the exhaust its turbulent shimmer.

Envelope

the rumble swells first (0 → peak at ~40 % of the length), the roar and tone follow with a later, steeper build, then everything recedes as the ship gains distance: level falls, the top end closes (air absorption), and the sound dies away at the end of the length.

Variation

`rng` shifts the peak time by a few percent and decorrelates the left and right noise beds; `power` sets rumble weight and roar level, `pitch` the final tone frequency, `length` the whole timeline.

Presets

a heavy freighter (low, long, rumble-dominant), a sleek fighter (short, high, bright) and a distant departure (soft and dark, mostly rumble and fade).

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