Drum Machine Online

8 channels (kick, snare, closed hat, open hat, clap, rim, tom, perc) across 16 steps at 16th-note resolution. Click a step to cycle it through normal, accent, ghost and off: an accent plays at 1.4 times the level of a normal hit, a ghost note at 0.4 times. Each track also has its own length, from 1 to 16 steps, set with − and +. A shorter track loops over its first steps while the others keep the full bar; steps past its length are dimmed and stay silent, and the readout under the grid shows after how many steps the whole pattern repeats. On desktop you see the full 8×16 grid. On mobile, tap pads to select and audition a channel, then edit its 16 steps in a mini-sequencer below.

Eight 808-style sounds synthesized in real-time with Web Audio — no samples loaded. Kick uses a 150→40 Hz frequency ramp with 480ms decay. Snare combines two sine oscillators with bandpass-filtered noise. Hi-hats are highpass-filtered noise at 7kHz with short (50ms) and long (300ms) envelopes. Clap layers four staggered noise bursts. Tom ramps 300→80 Hz.

Swing delays every odd-numbered step by a percentage of the step duration. At 0% swing, all steps are evenly spaced (straight 16ths). At 50% swing, odd steps shift halfway toward the next beat, creating a shuffle feel. The slider goes from 0-75%. Swing applies to real-time playback and to both exports, WAV and MIDI.

Seventeen presets that set the pattern, tempo and swing: Empty (128 BPM), House 4/4 (124 BPM), Techno (132 BPM), Minimal (125 BPM, 6% swing, loops of 3, 5 and 7 steps over a straight bar), Dub techno (120 BPM), UK garage (132 BPM, 20% swing), Drum & Bass (174 BPM), 808 Hip-Hop (90 BPM, 30% swing), Trap (140 BPM), Phonk (130 BPM), Lo-fi (85 BPM, 50% swing), Afrobeats (108 BPM, 15% swing), Reggaeton (95 BPM), Son clave (100 BPM), Rumba clave (104 BPM), Tresillo (100 BPM) and Cumbia (96 BPM). Son clave plays on the rim at steps 1, 4, 7, 11 and 13; rumba clave moves the third hit one step later; tresillo puts 3+3+2 on the kick.

Yes. Triggering the closed hi-hat immediately silences any ringing open hi-hat — the same behavior as a real hi-hat stand. This is handled automatically via a voice choke group with a fade-out envelope.

16-bit stereo WAV at your device's sample rate (44.1 or 48 kHz on most devices). The export renders 2 full bars of your pattern plus a 2-second tail for any ringing sounds to decay naturally. The exported file saves to your device and can be imported into any DAW.

Yes. On smaller screens the grid switches to a pad layout — tap any pad to hear and select that channel, then edit its 16 steps in a dedicated mini-sequencer, where each tap cycles normal, accent, ghost and off. The channel's length and volume sit right below it. All transport controls (play, BPM, swing, preset, export) remain accessible.

Yes. Copy link writes the whole beat into the link itself: tempo, swing, master and track volumes, every step's level and each track's length. Whoever opens it gets the same pattern, ready to play, with no account and no upload. The machine also keeps your latest beat on this device and brings it back on your next visit; opening someone else's link leaves your beat in place until you change something.

Yes. Export MIDI saves the same 2 bars the WAV export renders as a Standard MIDI file on channel 10, the General MIDI drum channel, so a General MIDI drum kit plays it as written. Each track uses its General MIDI note: kick 36, snare 38, closed hat 42, open hat 46, clap 39, rim 37, tom 45 and perc 56 (cowbell). The file carries your tempo, so the steps sit on your DAW's 16th-note grid; swing and each track's length are written as you hear them, and ghost, normal and accent hits become velocities 40, 96 and 127. Track volumes are not written, so set levels in your DAW; a track turned down to zero is left out.