Yamaha PLG150DX Owner's Manual download pdf (Page 30)

Parameters

■ Feedback

Range: -7 — +7

• This determines the level of the feedback loop in the algorithm. Each algorithm provides a feedback

operator, in which the output signal of the operator is looped back to its input. As its name implies,

Feedback produces harsh noise-like harmonics in the voice. The degree of harshness or amount of

noise depends not only on this setting, but also on the level of the feedback operator and its position

in the algorithm. (For a chart showing the Feedback conﬁgurations for all 32 algorithms, see page

34.)

■ PortaMd (Portamento Mode)

Settings: ﬂw/ftm (Sus-Key P Follow/Full Time Porta)

rtn/fgr (Sus-Key P Retain/Fingered Porta)

• Portamento is an effect that produces a smooth, continuous glide in pitch between two notes (or

chords) of different pitches. This parameter determines the way in which portamento is applied, and

the settings differ depending on the selected keyboard mode, Mono or Poly.

• When the keyboard is in Mono mode, the available settings are “Fingered Porta” and “Full Time

Porta.” Fingered Portamento is glide that occurs only when you play legato — in other words, play-

ing successive notes smoothly, not releasing a previously played note until after the next note is

played. Full Time Portamento produces glide from one note to the next even when you play staccato

(releasing one note before playing the next).

• When the keyboard is in Poly mode, the available settings are “Sus-Key P Follow” and “Sus-Key P

Retain.” In the “Follow” mode, if you play a note or chord and then play another note or chord, the

sustain from the original note/chord glides to the pitch of the most recently played note/chord. In the

“Retain” mode, the pitch of the new note or chord glides from the original pitch(es) without interrupt-

ing the sustain of the original note or chord.

■ PortaStep (Portamento Step)

Range: 0 — 12 (semitones)

• This determines whether the Portamento effect is continuous (setting of “0”), or is a glissando effect,

in which the glide in pitch occurs in discrete semitone steps (settings of 1 — 12). This effect is best

heard with a slower rate and when two widely separated notes are played one after the other. The

value determines the amount of semitones by which the pitch changes. For example, a setting of “1”

changes the pitch in semitone steps; for a setting of “12,” the pitch changes in octave jumps.

■ PitBndStep (Pitch Bend Step)

Range: 0 — 12 (semitones)

• This determines the size of the increments by which the Pitch Bend wheel (on a connected MIDI

keyboard) changes the pitch. A setting of “0” results in perfectly smooth pitch bending. Values other

than “0” represent the number of semitones by which the pitch will “jump” as you move the wheel.

For example, the maximum setting of “12” will cause the wheel to change the pitch in a single, one-

octave jump.

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Yamaha PLG150DX Owner's Manual Page 30