KPerkis Electronics Test Site

synths • html and javascript tools • circuit bending

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Chiptune Music Maker

All controls are exposed (no dev-tools button). Space = play/stop • N = next •

Bytebeat Classics + Synth Engine
Status: stopped • volume: low
Song: (none)
Playback
Pitch + Wave
Amp ADSR
Classic chiptune envelope for punchy notes + smooth releases.
Filter
Simple resonant lowpass for “fat chip bass” and mellow pads.
How to use the sequencer
Note formats you can type
Sharps: C#4, F#3, G#5 Flats: Bb3, Db4, Eb5 (use lowercase b, not the ♭ symbol)

Duration syntax Use numbers (:#beats) after the note: C#4:1 (1 beat) Bb3:0.5 (half beat) R:1 (rest)

Example you can paste C4:1 C#4:1 D4:1 Eb4:1 E4:2 R:1 Notes: Octave numbers work like usual: C4 = MIDI 60.

You can also enter MIDI numbers directly: 61:1 63:1 etc.
Custom pattern (easy)
Format: C4:1 D4:1 E4:2 R:1 (beats) — or MIDI numbers like 60:1 62:1. Use commas or spaces. R = rest.
ready
Tempo-Synced Delay
Flanger
Export
Copy/paste your current pattern quickly.
clipboard: ready