Retro coin pickup

A retro 8-bit coin pickup in E, instantly readable as "collect". A NES-style pulse channel plays a two-step blip: a short B5 on frame 0, then E6 a fourth higher four NES frames (67 ms) later. The E6 holds at full volume, then steps down the 4-bit volume ladder (16 linear levels, one step per 1/60 s frame, each step smoothed over 1 ms) until it is silent. The square wave is built additively from band-limited odd harmonics that taper off above 12 kHz, so it never aliases, and the note change glides over 2 ms so it steps without splatter. The output goes through the console's own gentle filter stage: two first-order high-passes (90 Hz and 440 Hz) and a 14 kHz low-pass. A second pulse channel provides the tiny echo, the way old games faked delay. It replays the same two notes six frames later at a third of the volume, with a 25 % duty and a slower decay, so it trails just past the main note and is nudged slightly right. A fainter third repeat comes six frames after that. The core is centred, has no low end at all, and fades to silence before 0.5 s.

Metrics

Integrated LUFS (approx.)

-17 LUFS

True peak

-10.6 dBTP

Momentary max

-15.9 LUFS

Short-term max

—

Length

0.5s · 24,000 samples @ 48000 Hz

Target master

-17 LUFS · peak ≤ -1 dBTP

Checks

Passed

Spectrogram

Generated code

Loading…