Falling Bomb Whistle

How it's made

Source

a stylized falling object's fin-edge whistle, sustained by turbulent airflow rather than a hit. A phase-continuous fundamental combines with noise-driven Q=9 edge resonance and a weak second partial.

Body

default pitch glides exponentially from 1900 to 430 Hz over 2.4 s; broad Q=0.85 air bands track it. Air is high-passed at 180 Hz and low-passed below 6.5 kHz, leaving a soft breath around the tonal core.

Motion

a smooth late Doppler bend reduces pitch by another 7%; brightness and level crest near 70% of the fall, then darken and recede. This is a cinematic descent cue, not a ballistic measurement.

Envelope

110 ms soft onset, gradual approach swell, then a 430 ms rounded release; no impact or reverb.

Modulation

4.8-8 Hz fin flutter and independent smooth turbulence perturb pitch by less than 0.7%.

Variation

seed changes tuning by +/-1%, flutter phase and air streams. Length, size, air and tumble distinguish the standard descent, distant thin whistle, heavy close fall and unstable tumbling variants.

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