Online Audio Spectrogram
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See the frequencies inside a recording. Turn audio into a detailed spectrogram and save a PNG image.
Turn sound into a picture
Long recordings can take more time and memory.
Reading your spectrogram
What does the picture show?
Time runs from left to right and frequency runs from low to high. Brighter areas mark stronger frequencies, measured relative to the loudest part of the image.
Can I change the image after adding audio?
Choose a different width, colour style or detail range. The image updates automatically. A larger detail range reveals quieter sounds.
Does the PNG include my audio?
No. The download is a still image with time and frequency labels. Your original recording remains unchanged.