Recording Start

A single bright rising beep with a firm attack that signals audio or screen recording has begun

one-shot · 0.31 s · 0 downloads · 0 likes

0.00 / 0.31 sMP3 preview · default

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 GBFZ4K42VV@1 -o recording-start.wav

Source: a small piezo/electronic beeper driven by a pitch-swept oscillator, as in a camera or recorder "REC" cue. A 1.5 ms high-passed noise tick marks the firm onset of the drive pulse.
Body: a sine fundamental plus 2nd and 3rd harmonics (1 : 0.3-0.6 : 0.1-0.3) give the bright, buzzy edge of a small transducer; a second fundamental detuned by +0.4 % adds slow beating so it is not sterile.
Envelope: 3 ms attack, a held plateau, then a short exponential-like fall to silence at 0.3 s; pitch glides upward by a fourth to a fifth in the first 70 ms, then settles, which reads as "going live".
Variation: `rng` shifts the tuning by +-1 % and the tick's noise; presets change pitch, glide, length and brightness (tight tick, standard beep, bright alert, soft low).

Parameters
Parameter	Range	Default	Unit	Controls
pitch	600 – 2000	1100	Hz	Pitch
glide	0 – 12	6	st	Glide
length	0.1 – 0.4	0.21	s	Length
brightness	0 – 1	0.65	—	Brightness
attack	0 – 1	0.5	—	Click
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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