See Your Sound in Real Time
Pick your microphone or load an audio file and watch four different visual modes react to the sound. Frequency, level and musical note are shown live.
Visualizer Features
A real-time Web Audio analyser with four rendering modes
Four Visual Modes
Bars, waveform, radial and mirror views, switchable while audio is playing
Mic or File
Analyse live microphone input or play back a local audio file privately
Level & Frequency
Live peak frequency, dominant note and dB level with a colour-coded meter
Fine Tuning
Adjust FFT size, smoothing and sensitivity to match any source
Snapshot Export
Save the current frame as a PNG image with a single click
Private by Design
Audio is processed locally - files are never uploaded
How to Use the Audio Visualizer
Four steps to start visualizing sound
Choose a source
Select the microphone for live sound, or load an audio file from your device
Start visualization
Press Start Visualization and allow microphone access if the browser asks
Pick a visual mode
Switch between bars, waveform, radial and mirror styles at any time
Tune and capture
Adjust sensitivity and theme, then save a snapshot of the current frame
Browser Compatibility
Built on the Web Audio API and Canvas
Chrome
Full SupportFull support for all visual modes
Edge
Full SupportFull support on Chromium-based Edge
Firefox
Full SupportFull support including audio file decoding
Safari
Full SupportSupported on macOS and iOS 14.5 or newer
Frequently Asked Questions
Common questions about the audio visualizer
Do I need a microphone to use the visualizer?
No. You can load any audio file from your device and the visualizer analyses the playback instead. The microphone option is only needed for live sound.
Why does nothing happen after pressing start?
Most browsers require a user gesture and microphone permission. If the animation stays flat, check that the input device is not muted and that the correct microphone was selected in your system settings.
What does the dominant note display show?
It converts the strongest frequency into the nearest musical note and octave. This is most useful for musical tones and instruments; speech produces rapidly changing results.
Which visual mode should I choose?
Bars are best for music, the waveform is best for speech and detailed analysis, radial looks good for circular artwork, and mirror mode gives a symmetrical, calibrated look.
Is my audio uploaded anywhere?
No. The Web Audio API analyses the sound inside your browser. Audio files are read locally and are never sent to a server.
Can I use this for a live stream or presentation?
Yes. You can capture snapshots as PNG images, or use your operating system's screen capture tool together with this page for a live visual during a call.