Yamaha PLG150-DX Owner's Manual page 37

• LFO Delay
Range: 0 ... 99
This determines the delay time for the LFO, or the amount of time that elapses between
the press of a key and onset of the LFO effect. This is useful in producing delayed vibrato
or tremolo effects (often used by singers or instrumentalists). Higher values result in a
longer delay time.
• LFO PMD (Pitch Modulation Depth)
Range: 0 ... 99
This determines the amount of Pitch Modulation Depth. This sets the degree to which
LFO modulation affects the pitch of the voice, or how widely pitch is modulated by the
LFO. This produces a vibrato effect for the voice. This has no effect if
Sensitivity is set to zero.
• LFO AMD (Amplitude Modulation Depth)
Range: 0 ... 99
This determines the amount of Amplitude Modulation Depth. This sets the degree to
which LFO modulation affects the volume of the voice, or how widely volume is modu-
lated by the LFO. When applied to a carrier operator, this produces a tremolo effect;
when applied to a modulator, it produces a "wah" effect. This has no effect if
Modulation Sensitivity
• Both Pitch and Amplitude are modulated together by the LFO; LFO cannot be set to modulate
these independently. However, by using the Sensitivity and Depth controls, you can set dif-
ferent degrees of the LFO effect for each.
• LFO Sync (Key Synchronization)
Settings: ON, OFF
This determines whether LFO Key Synchronization is on or off. When Sync is ON, the
LFO is automatically reset to the beginning of the selected waveform each time you play
a note. When sync is OFF, the LFO waveform continues in a "free running" condition;
when you play a note, the result will vary depending on where the LFO is in the cycle.
The effect can be easily detected at low LFO frequencies (i.e.,
10).
Parameters /
is set to zero.
37
Parameter Descriptions
Pitch Modulation
Amplitude
LFO Speed settings below