We often think of synesthetes as those people who associate say, colors with numbers. But the phenomenon can occur with any of the senses. Simply put, when one sense is activated, synesthesia causes one to experience an unrelated, activated sense. Sounds trippy, no?
This is a companion discussion topic for the original entry at https://hackaday.com/2024/04/10/synesthetic-clock-doesnt-require-synesthesia/