Tape Stop

Audio slowing to a halt like a stopping tape machine: falling pitch, slowing pulse, closing treble, dead stop

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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 4ZS49KRE1E@1 -o tape-stop.wav

Source: a looped programme (a soft three-note saw/triangle chord with a 6 Hz rhythmic pulse) plus tape hiss, all read by a capstan whose speed falls from 1 to ~0 when the motor is cut. Every readout frequency scales with the speed, so pitch, pulse tempo and head output fall together.
Body: playback loses treble as speed drops (gap loss): a low-pass follows 250 Hz + speed × 1.5-7.5 kHz; the hiss band closes the same way. A slow wow (up to ±0.4 % speed) from the unsteady pinch roller makes the glide organic.
Envelope: speed holds 1 for ~60 ms, then decays on a convex curve (reel inertia, brake drag) for most of the length; level follows speed^0.6 and a short fade closes the dead stop without a click.
Variation: `rng` detunes the chord by ±0.3 % and offsets the pulse phase; presets change length, brake curve, chord brightness, hiss and wow (cassette, reel-to-reel, quick brake, worn tape).

Parameters
Parameter	Range	Default	Unit	Controls
length	0.5 – 3	1.05	s	Length
brake	0 – 1	0.5	—	Higher stops sooner, with less lingering drift
brightness	0 – 1	0.5	—	Brightness
hiss	0 – 1	0.3	—	Tape hiss
wow	0 – 1	0.3	—	Wow
pulse	0 – 1	0.6	—	Rhythm pulse
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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