Patient Monitor Alarm

How it's made

Source

an electronic bedside monitor drives a small speaker with three clean, gated sine notes. The default group is 980, 1102.5, 980 Hz; no heartbeat, room noise or continuous flatline is included.

Body

weak second and third harmonics model speaker coloration, at most 3.5 and 0.9 percent of the tone. A quiet 2.65 kHz diaphragm mode settles in 32 ms, making the onset brighter than the steady beep.

Envelope

raised-cosine 8-18 ms attacks and 22-45 ms releases suppress switching clicks. A slight 8 percent sustain droop models the drive settling; upper harmonics fade faster than the fundamental.

Rhythm

three 120-240 ms beeps separated by 65-150 ms gaps, then a longer pause. The default repeats every 1.5 s, twice in the 3 s loop; presets use 1, 1.5 or 3 s periods, all dividing the loop exactly.

Variation

pitch, pulse length, gap, cycle and note contour are controls. A seed-fixed diaphragm tuning offset of +/-0.15 percent changes the device body only; the electronic note timing and tuning stay exact.

Space

dry mono source for placement in a scene. Presets cover rounded bedside, rapid warning, low soft reminder and a fixed-pitch equipment alarm; these are creative effects, not clinical codes.

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