Although I have grapheme-color synesthesia (or more recently clarified as ideasthesia), I often have a strong visual perception of music and sound, which would be a true synesthetic experience.
Along those same lines, I stumbled across this today, called Cymascope. The shapes are amazing; the piano tool midway down the page is fun to play with (see below—that's A, the first key on the left). But there's a whole lack of color that's quite distracting. And the shapes I see are neither spherical, nor symmetrical. More often they're swooping, curling, soaring shapes, with texture, weight, and sometimes even flavors.
I'm sure they're correct in stating "all audible sounds are bubble-like in nature, not wave-like…" However, that's describing a very physical sound wave, as opposed to the perception of sound and music, like what I experience. All that having been said, it's still really cool to experiment with.
Which reminds me… There were some studies done on the shapes each note makes in sand on a metal plate—very similar to those on the website above. These same patterns were found on ceramic tiles in a church from hundreds of years ago! Alas, I cannot find the video, or I would certainly link it. If you know of it, shoot me the link? Pretty please?
Stay curious, you never know where it'll lead you!
Thanks for reading!
Good juju-spreader, speaker, graphic designer. I'd love to hear from you!