Distant City Traffic

The far-off, muffled wash of city traffic heard from an apartment window, with an occasional distant horn

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0.00 / 15 sMP3 preview · Apartment window

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 NQJXDNR7F5@1 --preset window -o distant-city-traffic.wav

Source: hundreds of vehicles several hundred metres away, heard through an apartment window. Individually unresolvable, they fuse into broadband turbulence: engine and road rumble plus tyre hiss.
Body: distance and glass act as a low-pass. Rumble sits at 30–120 Hz, engines at 120–600 Hz, tyre hiss is a faint 1.2–3.5 kHz band that air absorption keeps far below the rest.
Layers: a pink wash (decorrelated L/R), a brown low rumble, an engine band whose centre drifts slowly, and a very quiet tyre-hiss band.
Modulation: passing groups of vehicles (traffic-light cycles) swell the wash by a few dB over 4–15 s through smoothed random drift; level stays steady overall, with no strong periodicity.
Events: an occasional distant horn, two close notes (about a major third apart, 300–520 Hz root) from band-limited saw waves, low-passed below 1.4 kHz so it is muffled, 0.25–0.9 s long with soft 40 ms attack.
Variation: `rng` picks horn pitch, length, strength and pan; macros set density, distance and horn rate.

Parameters
Parameter	Range	Default	Unit	Controls
density	0 – 1	0.5	—	Traffic density
distance	0 – 1	0.6	—	Distance
horns	0 – 1	0.3	—	Horns
rumble	0 – 1	0.5	—	Low rumble
hiss	0 – 1	0.3	—	Tyre hiss
swell	0 – 1	0.4	—	Traffic swell
spread	0 – 1	0.8	—	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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