Analysis & practice · 7 min
Choose a chord progression, then check it by ear
Build a four-chord idea in C major, bring its MIDI into your session, and use audio chord estimates to explore a reference recording.
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Spectrum & pitch analyzer
Inspect a spectrum or waterfall view of any audio file, read peak frequencies and note names, freeze a frame, and export a PNG. Runs locally in your browser.
In your browser · no upload
Spectrum & pitch analyzer
Look beyond the waveform to see which frequencies are present in your audio. Load a recording for a spectrum and time-based waterfall, or monitor microphone input to compare sounds as they happen. Peak readings help you locate a persistent hum or inspect the harmonics of a test tone. The FFT size changes the balance between separating nearby frequencies and following quick changes; a larger setting is not automatically better. Freeze a spectrum to compare a later reading, and save a PNG when you need a visual reference. Analysis runs on your device. The display supports investigation and listening decisions, but it does not remove noise, identify every instrument, or establish a medical hearing result.
Parameter / option
| Parameter / option | What it changes |
|---|---|
| File or microphone | Analyze a local recording or enable live microphone input. Stop microphone monitoring when the comparison is finished. |
| FFT size | Choose 512–8192 samples. Larger windows separate nearby frequencies better; smaller windows follow rapid changes more closely. |
| Freeze and image export | Keep a spectrum frame for comparison, inspect peak readings, and download the displayed visualization as PNG. |
How to use it
- 1
Load a file and run analysis, or allow microphone access for live monitoring.
- 2
Choose an FFT size suited to sustained tones or fast changes, then inspect peaks and the waterfall.
- 3
Freeze a useful frame, compare another reading, and save a PNG if needed.
Good questions
A harmonic can be stronger than the fundamental. Noise and overlapping instruments can also dominate a frequency peak.
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Spectrum & pitch analyzer
In your browser · no upload