Timer Done

Repeated groups of bright square-wave beeps from a kitchen or productivity timer reaching zero

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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 ZH6G8DBA2T@1 -o timer-done.wav

Source: a piezo disc buzzer driven by a square wave from a microcontroller, switched on and off in groups of short beeps. Drive is a band-limited square at 1.2–4 kHz plus a slightly narrower pulse whose width varies per beep, standing in for drive tolerance.
Body: the ceramic disc resonates near its drive frequency (band-pass, Q ≈ 3) and the plastic case adds a weak, broad 1.2 kHz coloration. A low-pass at 2–6 × the pitch tames the upper harmonics of the square, so the tone is bright but not piercing.
Envelope: each beep is gated with a 3 ms rise and an 8 ms fall (no clicks); a beep lasts 45–80 % of the beep period. The first beep of every group is slightly stronger, which gives the phrase its pulse.
Rhythm: by default 4 beeps at 8 Hz per group, a 0.4 s pause, and three groups, about 2.5 s in total.
Variation: `rng` detunes each beep by a fraction of a percent. Macros set pitch, tempo, group size, group count and brightness; presets move between kitchen, watch, oven, gentle and urgent timers.

Parameters
Parameter	Range	Default	Unit	Controls
pitch	1200 – 4000	2700	Hz	Pitch
period	0.07 – 0.2	0.125	s	Beep period
beeps	1 – 4	4	—	Beeps per group
groups	1 – 4	3	—	Groups
pause	0.15 – 0.6	0.4	s	Group pause
brightness	0 – 1	0.55	—	Brightness
duty	0 – 1	0.6	—	Beep length
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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