Cozy UI kit (8-sound sprite)

A 4.0-second UI sound sprite, 192,000 samples, eight sounds each starting exactly on frames 0, 15, 30, 45, 60, 75, 90, 105 (every 0.5 s) and each fully silent before the next slot, so each can be sliced: 1 tap, 2 toggle-on, 3 toggle-off, 4 bubble pop, 5 success, 6 error, 7 notification, 8 delete swoosh. Cozy, rounded and bubbly; all pitched material in F major pentatonic so the set feels like one product. Each sound <= 300 ms: soft bodies with a 1-2 ms transient, gentle pitch glides (up for positive actions, down for toggle-off and delete), a felt-like low-passed error (two notes falling a minor third), and a pop built from a fast-rising resonant band-pass blip. Nothing above 9 kHz, nothing harsh, pleasant on the hundredth repeat; low end mono. Roughly equal perceived loudness per slot. Also print a JSON cue map (slot, name, start sample, end sample) to stdout.

Take angle 2 (wooden mallets): build the pitched sounds from modal mallet synthesis (marimba/kalimba-like bar modes, e.g. 1 : 3.99 : 9.83 and 1 : 2.76 : 5.40 with fast high-mode decay), soft felt attacks, a tiny wooden 'tock' for tap, still F major pentatonic and cozy.

Metrics

Integrated LUFS

-17 LUFS

True peak

-2.13 dBTP

Length

4s · 192,000 samples @ 48000 Hz

Target master

-17 LUFS · peak ≤ -1 dBTP

Checks

Passed

Spectrogram

Generated code

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