Many moons ago I became quite obsessed with analyzing spectrograms on my computer. I would load up audio files in Audacity and look at them to see how the audio "looked", as a function of how intense each frequency is over time. You can even set a track to spectrogram while recording which allowed you to see the sound in real time. Music also tends to be very beautiful in the spectrogram! And birdsong also. Sometimes…
https://news.wisc.edu/a-taste-of-vision-device-translates-fr...