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...Is the musical scale and arithmetic or geometric sequence frequencies in hertz vibrations per second of notes produced by a piano for below middle c to above are g f e d b do these form sequences what common difference if ratio does this constant have any meaning related scales notice that frequency exactly twice no mere coincidence two an octave apart high note low always since there pitches all between either r acoustical society america http asa aip org sound html offers auditory demonstrations cd prepared at institute perception research ipr netherlands among with based on demo called logarithmic linear you still not sure whether listening will help decide...