11. Expon. (F) and Log. (F)

The Expon. (F) Module converts a pitch, in MIDI, to a frequency in Hertz. For example pitch of 57 is 220 Hz, and pitch of 69 is 440 Hz. An increase of pitch by 12 is octave or doubling of frequency.

The Log. (F) yields the MIDI pitch number given a frequency. Thus it will result in output of 69 given 440 Hz as input.

A fader, named Pitch with range set from 0 to 127 with a step of 1, contains the Pitch value. The Expon. (F) module results in output of nearly 440 Hz. It is exactly 440 Hz, but there are round off errors.

The resulting frequency is converted to pitch, it should be exactly 69, but there are round off errors.

This is the structure view:

This is the panel view: