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Frequency Analyzer
See the frequency spectrum of any track — or plug in your mic for a live view.
Drop your track here
MP3, WAV, FLAC, M4A, AAC — processed locally, never uploaded
How it works
Upload a file or use your microphone to see a real-time frequency spectrum from 20 Hz to 20 kHz. The dominant frequency is shown as the nearest musical note. Useful for checking what's happening in a mix, finding resonances in a room, or just seeing what a sound actually looks like.
Frequently asked
What am I looking at?
A breakdown of your audio by frequency — how loud each frequency is at any moment, from the lowest bass to the highest treble. Think of it as an X-ray of the sound.
Can I use my microphone?
Yes. Click "Use microphone" and grant permission. The analyzer shows the live spectrum of whatever the mic picks up — your voice, an instrument, a room.
What does the note name show?
The dominant frequency converted to the nearest musical note (standard A4 = 440 Hz tuning).
Why does the bass end take up more space on the screen?
The frequency axis is logarithmic — the same way human hearing works. Octaves appear as equal steps, so bass frequencies get more visual space.
Is my audio uploaded?
No. All processing happens locally in your browser. Microphone audio is never transmitted.