Opus Sounds Directory
UI & app sounds

Message sent

UI & app sounds · 2026-10-06

Related guide: How to Write a Good Sound Effect Prompt (With UI and App Sound Examples)

Claude Opus 5.5

Fast tempoBrightUpbeat
New
Space
CC0

Prompt

A quick, optimistic 0.6-second "message sent" in G. It opens on frame 0 with a soft puff of air that swells into an upward swish. Two decorrelated noise bands sweep from about 600 Hz to 9 kHz and glide from slightly left to slightly right, and a faint breathy D5-to-G6 whistle rides inside them to give the motion a pitch direction. At 140 ms the swish resolves into a light glassy pluck: a G6 with a quieter D7 fifth above and a soft G5 body. Its partials follow glass-like inharmonic ratios, with a tiny bright tink on the attack and a short, airy room. Nothing heavy sits below 150 Hz and the stereo width lives only above 650 Hz. The pluck rings out in about a third of a second and the file ends in silence, so it is gone before the next thing happens.

Metrics

Integrated LUFS (approx.)
-17 LUFS
True peak
-8 dBTP
Momentary max
-15.3 LUFS
Short-term max
—
Length
0.6s · 28,800 samples @ 48000 Hz
Target master
-17 LUFS · peak ≤ -1 dBTP
Checks
Passed

Spectrogram

Spectrogram of Message sent, a free ui sound effect at 0.6s

Generated code

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Timing & cues

30 fps · seed 3303

  • Frame 0: send

Swish: two decorrelated TPT-SVF noise bands sweeping 600 Hz to 9 kHz with a left-to-right drift and a faint D5-to-G6 whistle, from a soft air puff on frame 0. It resolves at 140 ms into a glassy G6/D7/G5 pluck (inharmonic 1/2.32/4.25/6.63 partials, tiny tink) with a short airy room. Mid high-passed at 140 Hz and side at 650 Hz, so the low end stays light and mono.

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