Music activated chromatic roulette generator

摘要: A system for creating and displaying colored roulette curves representative of music on a screen includes an X-,Y-deflection control circuit which is driven in part by at least two musically-related fixed frequency signals. These frequencies are taken from arithmetic progression pseudotempered scale tones very nearly equal to the geometric tempered tones. In addition, they form ratio integers, one other, approximately [N(1.0594631)n]/N, where N integer, n-1 number skipped between corresponding scale, (1.0594631)/1 common relating adjacent as well difference various progressions pseudo-tempered related changes musical key. signals each divided into quadrature components and, after being amplitude modulated audio-derived signals, applied circuits. determining colors receives separates these bands, splits bands phase-shifted another applies respective like color producing elements. Audio-derived also used vary brightness display. The tint roulettes determined phase relationship those color. Solo-tone-produced given added insertion high-frequency signal may be modulation increase width trace.