Wingbeats

A large bird beating its wings slowly and powerfully: deep, wide whooshes of air with pressure; adjustable rate and span

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Preset

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Free for commercial use. No attribution needed.

Tweak

renders in the CLI · WAV

Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.

Command

$ sb get R1ERD824NQ@1 -o wingbeats.wav

Source: air pushed by the wing = noise. The downstroke is the power stroke: a broad "呼" of air whose band rises as the wing accelerates and sinks as it slows; the upstroke is a lighter, brighter swish.
Pressure: big wings move a mass of air — a low, band-limited pressure pulse under each downstroke (风压), strongest for wide spans.
Feathers: primaries separate and rattle at the stroke reversal — sparse velvet-noise grains through a high band-pass, more prominent on small birds.
Modulation: wing span sets the band (big = low and wide), the period sets the stroke lengths; each beat varies a little in strength, pitch, timing and pan; effort scales the level; a slow drift gates the flapping into bursts with pauses (small birds flap, glide, flap again).
Events: `events.periodic` at the wingbeat period, one voice per beat (down + up stroke); long tails on big birds so beats blur into gusts.
Layers: whoosh (decorrelated L/R pink), pressure (brown, low-passed), feathers (velvet, band-passed), upstroke.

Parameters
Parameter	Range	Default	Unit	Controls
period	0.08 – 2.5	1	s	Beat period
span	0 – 1	0.65	—	Wing span
effort	0 – 1	0.7	—	Effort
pressure	0 – 1	0.6	—	Air pressure
feathers	0 – 1	0.35	—	Feathers
irregularity	0 – 1	0.2	—	Irregularity
bursts	0 – 1	0	—	Bursts
spread	0 – 1	0.6	—	Width
seed	int	1	—	Variation, reproducible

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

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