a common space & database for harmonic overtones
The octave spiral is a structure that clarifies the ratios of the harmonic series. It illustrates something essential and universal, so it is obvious for anyone to try to understand and experiment with this pattern - first and foremost singers and musicians.
Marco Gianotta has made his design and programming expertise available for the project.
The program will not work in Internet Explorer, but in Edge and other modern browsers.
You can find it here: http://suonoterapia.org/overtones/
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