Spectrum Analyzer
Drop a track to see its full frequency curve, tonal balance and high-frequency cutoff. 100% in your browser, nothing uploaded.
How to read your spectrum
A spectrum analyzer plots energy against frequency: the low end (sub-bass and bass) on the left, the midrange in the centre, and the highs (presence and air) on the right. Most well-balanced mixes look like a gentle slope — strong lows tapering down to quieter highs — because that's how music naturally distributes energy. What you're hunting for is anything that breaks the slope: a big hump around 200–400 Hz reads as boomy or boxy, a scooped midrange sounds hollow, a spike around 3–5 kHz can be harsh, and a cliff at the top means the air is missing. This tool averages the spectrum across the whole track, so you see a stable tonal fingerprint rather than a jumping real-time meter.
It also reports the high-frequency cutoff — the highest frequency still carrying real energy. A full-quality WAV typically reaches near 20 kHz; a low-bitrate MP3 or a lossy AI export often stops around 16 kHz or below, which tells you the source was already bandwidth-limited before you ever touched it. Everything runs locally with the Web Audio API, so it works on unreleased demos, private stems and AI-generated tracks. Once you can see the imbalance, the fix is tonal balancing and EQ — exactly what TrackGleam's free mastering does automatically, then measures so you can confirm the result.
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FAQ
What does an audio spectrum analyzer show?
How much energy your track has at each frequency, from sub-bass to the top of the audible range. A gentle downward slope is typical of a balanced mix; humps and dips reveal a boomy, boxy, harsh or dull tonal balance.
Does this upload my audio file?
No. The file is decoded and analysed entirely in your browser with the Web Audio API — nothing is sent anywhere. It works on unreleased demos, private stems and AI-generated tracks.
What is the high-frequency cutoff?
The highest frequency that still carries real energy. A full-quality WAV reaches close to 20 kHz; a low-bitrate MP3 or lossy export often cuts off near 16 kHz or lower — a sign of limited source quality.
Is this a real-time spectrum analyzer?
No — it shows the averaged spectrum of the whole file, a stable single picture of your tonal balance that's more useful for mix/master decisions than a jumping real-time meter.