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Chapter 22 ES2 227
The CBD (Constant Beat Detuning) parameter matches this natural effect by detuning
the lower frequencies in a ratio proportionate to the upper frequencies. Besides
disabling CBD altogether, four values are at your disposal: 25%, 50%, 75%, 100%. If you
choose 100%, the phasing beats are (almost) constant across the entire keyboard
range. This value, however, may be too high, as the lower notes might be overly-
detuned at the point where the phasing of the higher notes feels right. Try lower values
for CBD (and detune, of course) in cases where the bass appears to be a little too far out
of tune.
The reference pitch for CBD is C3 (middle C): Its detuning stays the same, regardless of
the CBD value.
Glide
The Glide parameter controls the portamento time. This is the time it takes for the pitch
to travel from one note to another. Glide behavior depends on the value of the
Keyboard Mode parameter setting.
If Keyboard Mode is set to Poly or Mono, and Glide is set to a value other than 0,
portamento is active. If Keyboard Mode is set to Legato, and Glide is set to a value other
than 0, you need to play legato (press a new key while holding the old one) to activate
portamento. If you do not play legato, portamento will be inactive. This behavior is also
called fingered portamento.
Bend Range
Bend Range determines the pitch range for pitch bend modulation. The range is ±36
semitones. There are separate range settings for upwards and downwards bends, plus
an optional link mode.
Keyboard Mode (Poly/Mono/Legato)
A polyphonic instrument allows the simultaneous playing of several notes—an organ or
piano, as examples. Many synthesizers are monophonic, especially the older ones. This
means that only one note can be played at a time, much like a brass or reed
instrument. This shouldn’t be viewed as a disadvantage in any way, because it allows
playing styles that are not possible with polyphonic keyboard instruments.