See your track's frequencies, not just its waveform
A time-frequency spectrogram of any track — spot muddy low end, harsh highs, and frequency clashes at a glance. Free, private, right in your browser.
Drop an audio file here or click to add
MP3, WAV, FLAC, M4A
Why look at a spectrogram instead of a waveform
A waveform only shows you loudness over time — it can't tell you whether a track is muddy in the low-mids, harsh in the highs, or has a resonant frequency fighting with another instrument. A spectrogram shows frequency content over time, so you can see problems that are much harder to hear precisely, especially on smaller speakers or headphones.
How to read a spectrogram
Time runs left to right, frequency runs bottom (low) to top (high), and brightness shows how loud that frequency is at that moment. A bright horizontal band is a sustained tone at that frequency; a bright vertical streak is a transient like a kick or snare hit; a dense bright area at the bottom is bass energy; a hazy bright wash across the highs often means harshness or noise.
What spectrograms catch that your ears might miss
Some problems are genuinely hard to hear precisely — exactly which frequency is resonating, whether two instruments are clashing in the same narrow band, or how much energy is really down in the sub-bass. A spectrogram makes these visible even when your ears (or your speakers) can't isolate them cleanly.
How to view a spectrogram
One step: drop the file. Everything happens locally in your browser — your track is never uploaded to a server.
1. Drop your track
MP3, WAV, FLAC, or M4A. The file is decoded and analyzed with the Web Audio API — nothing leaves your device.
2. See the full frequency picture
A time-frequency heatmap of the whole track, from bass up to 8 kHz, where most musically relevant content lives.
3. Spot and fix problems
Find muddy low-mids, harsh highs, or masking between instruments, then fix it in your DAW — or head over to mastering and a lyric video for the same track.
What people use a spectrogram for
Seeing frequency content visually helps at every stage from mixing to final quality checks.
Mixing & EQ decisions
Spot exactly where two instruments are clashing in the frequency spectrum so you know precisely where to carve with EQ instead of guessing.
Cleaning up AI-generated tracks
AI music generators sometimes leave odd frequency artifacts or excess noise in certain bands — a spectrogram makes them visible so you know what to clean up.
Pre-mastering quality checks
Check for problem frequencies, unwanted noise, or an unbalanced frequency spread before you master a track for release.
Frequently asked questions
Spectrograms, answered.