Upload an MP3, WAV or other audio file and see your sound as a picture: time runs left to right, low frequencies sit at the bottom and high ones at the top, and brighter colors mean more energy. The image is drawn right in your browser for the whole track, and you can save it as a PNG. You also get a written AI report on the frequency balance and any mix problems it hears, such as a muddy low end or harsh highs.
You can try it free. New accounts get 6 free credits for 7 days, and each spectrogram costs 2 credits, so you can make up to 3 before paying anything. Each one includes the image and the written report. After that you buy credits as you need them, with no subscription required.
A spectrogram is a picture of sound. It shows time from left to right, frequency (low to high pitch) from bottom to top, and how strong each frequency is as color or brightness. It lets you see what you would otherwise only hear: where the bass sits, when the cymbals come in, or when a section goes quiet.
Sign in, upload your audio file (MP3, WAV, FLAC or another format your browser can play, up to 50MB) and press Generate Spectrogram Report. The image is drawn in your browser while the AI writes its report. Press Save Image to download the spectrogram as a PNG. The report is saved to your History.
Black means little or no energy, and the colors then run through purple, red and orange up to yellow and white for the strongest parts. A bright band that stays at one height over time is a steady frequency, like a held bass note or a resonance. Thin bright lines stacked above each other are usually the overtones of a note or a voice.
A thick, bright band in the low mids can point to a muddy mix. A bright line that sits at one frequency through the whole song can be a resonance worth cutting. Very little energy near the top can mean the track lacks air, and sudden dark gaps show where the arrangement drops out. The written report adds the AI's own read on the balance, so you do not have to work it all out from the picture.
The image covers the range where most musical energy lives, from the lowest bass up to roughly 15 kHz, on an even (linear) scale, and it is drawn from the left channel. That makes it good for checking balance and arrangement, but not for checking the very top end, such as whether a file is truly lossless.
No. This tool works one way: it turns your audio into a spectrogram picture. It does not turn text or images into sound or into spectrogram art.
Yes. SongTools was built so Deaf and hard of hearing people can read what music feels like, and the spectrogram lets you check a mix with your eyes. Pair it with Analyze Loudness and Dynamics and Analyze Vocal Clarity for written reports on loudness and on how clear the vocal is.