A drum machine that runs in this page. Four synthesised voices — kick, snare, hat, clap — a sixteen step sequencer, and a WAV export you can drop straight into your DAW. Nothing to install, nothing to sign up for, no samples to download. Every sound is built from oscillators and noise on the spot, which is why the whole thing weighs less than a photograph.
The kick is the reason it exists. Most drum machines hide the kick behind two or three knobs. Here you draw its pitch envelope yourself: drag the nodes, bend the curve between them, and watch the rendered waveform redraw as you go. It is a three layer build — a click for the attack, a pitched punch for the body, and a sub that carries the weight — the same architecture I use for my own releases as FDR-Sound.
How to use it
- Punch a step — click a slot in the grid. Click it again for an accent, which plays that hit louder. A third click clears it.
- Play — the Play button, or the spacebar.
- Hear one voice on its own — click the voice name in the grid to trigger it, or press 1 to 4.
- Shape a sound — drag a knob up or down. Hold shift while dragging for fine control, double-click to reset it. The reading under each knob shows the exact value.
- Start from a preset — eighteen of them, grouped by feel. Each one loads a pattern, a tempo, a swing amount and a full kit, so Deep house and Hardstyle sound like different machines rather than the same one playing different notes.
- Push it off the grid — swing delays every second step. Around 20% loosens a straight beat without making it sound broken.
- Share what you made — Copy link puts the entire state, pattern, envelope and knobs, into the address. Send it to someone and they open your patch.
- Take it with you — Export WAV renders one, two or four bars. Export kick WAV gives you the kick on its own.
Drawing the kick
The pitch envelope panel is where the kick is actually made. The line is the frequency over time, from the attack on the left to the note it settles on. Drag a black node to move it. Drag the small blue dot halfway along a segment to bend the curve — the same drop can be made to happen instantly or to ease down, and that difference is most of what separates a hard kick from a deep one. Click the line to add a node, double-click one to remove it. The amber node at the end is the root note, and it moves together with the Tune knob in both directions.
- Steep and short reads as hard. Start high, drop in under 30 ms, and let the sub do the rest.
- Shallow and long reads as deep. Start closer to the root and take 200 ms or more to arrive.
- A plateau in the middle — add a node and flatten the first segment — gives you the two stage drop used in harder dance styles.
- Tune it to your track. The readout shows the note, not just the frequency. A kick in the wrong key fights your bassline.
- Watch the waveform next to it. If the shape looks like a solid block rather than a decaying tail, the drive is too high — turn it down and raise Click instead.
- Harmonics adds bite to the body without touching the sub, so the kick stays audible on phone speakers. It changes tone, not loudness.
Good to know
Works in Chrome, Firefox, Edge and Safari, on desktop and phone. On iPhone you have to tap once before any sound plays — that is Apple’s rule, not a bug. Nothing you do here is uploaded or stored: the tool runs entirely in your browser, and your pattern lives in the link, not on a server.
Loops and kicks you export are yours. Use them in your own tracks, releases and sets, no credit needed.
Built as part of Lumlux Art, where sound and form come together. More tools are on the way — if you make something with this, I would like to hear it.