I stumbled upon this fascinating paper while rambling around Google for an image of the circle of fifths. For a couple of years now I have been suggesting to Native Instruments DJ division that they build upon the tools in Traktor to enhance live harmonic mixing. So far, I haven't had much success but I think this may be down to me not explaining myself very well and not campaigning hard enough. This paper has helped me to crystalise my ideas for a tool that can link tonality with colour within Traktor (or any software DJ application). Extract from paper: This correlation is mirrored by the testimony of chromaesthetics , those afflicted by a common form of synaesthesia in which neural pathways are crossed and auditory stimulus also evokes a visual response – flickering colored hallucinations dubbed “ photisms .” Although the color of any particular note varies between chromaesthetics , these phenomena do have universal qualities, or form constants, which include inverse rel...
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