Up to 32 harmonics can be controlled. A Mode 1 voice consists of 32 waveform segments, represented by the vertical lines in the graph area. That gives 32 points per harmonic profile. The numbers across the bottom of the image show the status of the 32 harmonics. A triangle indicates that the harmonic is currently displayed on the graph.
JOIN connects each point to the previously drawn one, creating a smooth curve.
PLOT allows individual points to be specified without affecting the surrounding ones. Also, the energy profile is automatically calculated from the combined amplitudes of the harmonic profiles. This provides a smoother sound. The LOOP control is a very handy visual indicator of which segments are repeated when the voice is played. Mode 1 sounds are unique on the Fairlight CMI because they play for a fairly similar length of time, no matter the pitch.