In case you haven't met these, two words, here's an AI generated definition from Google: Synesthesia is a condition where stimulating one sense triggers experiences in another, and chromesthesia is the specific type where sounds evoke the perception of colors.
I have the free version of a subscription at from academia.edu which gives you a summary every day of academic papers and shows people who share your interests. Recently there seem to be more and more papers being published on the subject of chromesthesia which is, of course interesting to anyone who uses the Color Vowel® system.
For example, they recently suggested I read "Color Vision: Color Categories Vary With Language After All" by Debi Roberson. The AI-generated abstract says: This research challenges the long-held belief that color categorization is universal and unaffected by language. It provides evidence from studies on Russian and English speakers, demonstrating that language significantly influences perceptual color categorization and shows that the cognitive organization of color categories varies across cultures. The findings highlight that distinct linguistic color categories can lead to measurable differences in color perception, suggesting the cognitive representation of color is shaped by linguistic frameworks.
If her research proves to be valid, that must be discouraging to the people who have been trying to develop a universal chart, similar to the Color Vowel® chart but applicable to all vowels in all languages and those who have been working on something similar in the field of music.
An example: Chromoacoustics: The Science of Sound and Color Chromoacoustique : La Science du son et de la couleur By Rose+Croix Journal. Summary: The purpose of this presentation is to share findings from a decades-long search to develop the optimal method, with some basis in natural law, for translating music―and perhaps all auditory manifestations―into chromatic visual displays, a process this paper names Chromoacoustics, (" CAS ") or " color and sound. " The outcome could provide insights into the operation of well-concealed natural laws. It is clear that this research could furnish beneficial results through instructional and therapeutic applications, among which are means to provide enhanced tools for teaching the hearing-impaired.
If you want to get the same, free, subscrition I have, go to https://www.academia.edu. I should warn you -- it will deluge you with emails. If possible, you might want to create an inbox "Rule" that puts all their messages into a special folder.