SERIES WHEEL produces a palette of tones which can be used to explore
the influence of harmonics on tone quality. The knobs control the
intensity of 16 tones: a fundamental tone, followed by 15 tones
in the harmonic series. By playing the fundamental tone and adding
different harmonics, you can see and hear how the harmonic combinations
affect the overall sound being produced and relate this to the characteristic
tone qualities of different instruments.