Audio Spectrum Analyzer
See the frequency spectrum of any sound in real time from your microphone.
Processed in your browser — files never leave your device
20 Hz
100 Hz
1 kHz
10 kHz
20 kHz
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Allow microphone access to begin.
How to Use the Spectrum Analyzer
- 1 Upload audio or use your microphone
- 2 See the frequency spectrum in real time
- 3 Identify peaks, resonances, and frequency balance
Frequently Asked Questions
What does the spectrum show?
The horizontal axis shows frequency (Hz), the vertical axis shows amplitude (dB). Peaks indicate dominant frequencies. Use it to check EQ balance or find problematic resonances.
What FFT size should I use?
Larger sizes (4096, 8192) give better frequency resolution but slower response. Smaller sizes (1024, 2048) respond faster. 2048 is a good default for most use cases.
