The spectrum analysis below shows lots of second harmonic added, this makes the tone
sound richer and sweeter. The effect is dependant on the loudness of the tone, i.e. it is
dynamic.
Fig. 8 output spectrum, harmonic setting
Here the input signal is quite loud. The first peak is the fundamental (1 kHz) and the second
peak is the 2
nd
harmonic (2 kHz).
With a quieter input the proportion of added 2
nd
harmonic is reduced and the output is almost
pure and symmetrical. See Fig 9 below.
Fig. 9 output waveform, harmonic setting (quiet)
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