Drum visualizer for practice, streams and playthroughs
BLOOB detects kick, snare and hats as separate onsets, so an acoustic kit through a microphone, an electronic kit through an interface, or the built-in 1–7 drum keys each light the visuals differently. Free and live in the browser.
Who this is for
- Drummers working on timing and dynamics
- Producers checking whether a pattern reads
- Streamers who want an overlay that hits with the kit
Three onset detectors, not one level meter
Most visualizers move with overall loudness, which turns a busy kit into a blur. BLOOB runs separate onset detection on low, mid and high bands: the kick drives size and gravity, the snare fires ripples and flashes, hats drive sparkle and fine detail. On a real kit that means the ride and the kick are visibly different events.
Your timing, drawn
The beat grid is predicted a few milliseconds ahead and compensated for your audio output latency, so the visual downbeat sits where the musical downbeat is. Deep Sonar draws one sweep per bar, so a rushed or dragged hit lands visibly early or late on the sweep.
No kit in the room? Use the drum keys
Press K for free play and 1 to 7 play a synthesized kick, snare, hat, clap, tom, open hat and rim through the same analyser. You can build a pattern on the number keys and it reacts exactly as a miked kit would, because it is real sound either way.
How to do it
- Open BLOOB; click “Mic / instrument” for an acoustic kit, or connect an electronic kit through your interface
- Allow microphone access and choose the input device
- Play — try Deep Sonar for timing, Pulse Lanes for pattern, Arc Storm for energy
- Or press K and tap the drums on the number keys instead
Questions people ask about drum visualizer
Does it detect tempo from live drumming?
Yes, tempo is tracked live. You can also tap a tempo or lock it if a shuffle or a half-time feel confuses the detector.
Will a room mic pick up too much?
The noise floor is measured at start and the beat threshold sits above it. If the visuals fire on nothing, move the microphone closer to the kit or lower the input gain.
Can I use an electronic kit over MIDI?
A MIDI kit or pad controller plays the free-play synth voices — every note-on makes a sound, and that sound drives the visuals — but the drum voices themselves live on keys 1–7. For a real kit, the microphone or interface input is the better route.
Can I record a practice session?
Yes, with Record. Export MP4 or WebM at up to 4K, and nothing is uploaded.
Related: beat visualizer · play music with computer keyboard · live instrument visualizer · midi keyboard visualizer