GPDO
An EDQ[idiosyncratic term] (equal division of the quatave) is a type of GPS (geometric pitch sequence) scale. n-edq is a geometric series of pitches starting at 2/1 (1200 cents) and multiplying the previous pitch by 21/n each time. For example, 1edq doubles the pitch each time with the sequence of cent values being {1200, 2400, 4800, 9600...} and sequence of ratios being {2/1, 4/1, [[16/1], 256/1...}. The scale type was first described by CompactStar and the name EDQ was coined by R-4981.