PULSEKANI Instrument
Connect Mic →

Microphone & Instrument Visualizer

Turn your microphone into live reactive visuals.

A microphone visualizer that makes your voice, singing, guitar, or keyboard visible the instant you make sound. Connect any browser-visible microphone or audio interface and watch your dynamics shape living light.

Use microphone / instrument Try demo first
✓ Permission asked only when you click ✓ No speaker feedback by default ✓ Zero audio upload to servers ✓ Works with USB interfaces & mixers
Liquid Pulse scene reacting to live microphone input
Liquid Pulse scene responding dynamically to voice dynamics and room sound Explore all 24 scenes →

Expressive use cases for live acoustic input

Singing & Vocal Performance

Sing, rap, or speak into a microphone. Vocal pitch, energy, and formants directly warp the visual field, creating dramatic concert-ready projections for live shows.

Guitar, Bass & Synthesizers

Connect your guitar or synth through an audio interface (Focusrite, MOTU, etc.). Notes and chords bloom into spectral light with real-time waveform tracking.

DJ Mixers & Club Inputs

Route the master output of a DJ mixer or controller into an audio line-in. Project the visuals onto a screen, wall, or LED wall behind the booth.

Stage Projection & Venues

Open Clean Output or press Fullscreen on a secondary projector display. Control scene parameters or trigger transitions via keyboard or MIDI controller.

Safe by design: No speaker feedback

A major flaw in naive web visualizers is automatically routing microphone audio back through the computer speakers, causing painful feedback loops. PulseKani separates analysis gain from speaker monitoring. Live microphone and interface signals are analyzed silently by default; they are never sent back to your speakers unless you deliberately enable monitoring in headphones.

How to connect your microphone in 3 steps

  1. 1. Click "Use microphone / instrument"

    Go to PulseKani and click the Microphone button. Your browser asks for microphone access only after your click.

  2. 2. Select your device & check the meter

    Choose your built-in mic, USB mic, or audio interface. Speak or play a note and verify that the green level meter responds.

  3. 3. Select a scene & go fullscreen

    Try Liquid Pulse for vocal flow, Particle Nebula for acoustic guitar, or Oscilloscope for synth patches. Press F for fullscreen.

Frequently asked questions

Does PulseKani record or store my voice?

No. Audio is analyzed in real time in volatile browser memory and discarded immediately. Your voice or performance is never uploaded, recorded, or transmitted to any server.

Can I use a USB audio interface or mixer?

Yes. Any class-compliant USB audio interface, mixer, or USB microphone recognized by your operating system will appear in the Input options dropdown. Multi-channel interfaces can even be split to analyze channels independently.

What should I check if the visualizer isn't reacting?

Check the source meter under "Add your sound". If the meter is flat, verify your microphone's physical mute switch, operating system input volume, and browser permissions. You can also click "Refresh inputs" after plugging in a new device.

Can I use a MIDI keyboard with this?

Yes. MIDI controllers can map to visual parameters (like intensity, speed, glow) or trigger scene changes using PulseKani's built-in MIDI Learn in the Advanced panel. Note that MIDI note messages control visuals, not audio generation.