Yamaha DX27 EN - Manual (Page 35)

5: LFO DELAY
Permits setting a delay of between 0 and approximately 10.7 seconds before the
LFO modulation effect begins after a key is played. This is particularly useful for
simulating brass instruments, human voice, etc., in which a vibrato effect is gradually
applied after the note has been initiated.
The data range is from 0 to 99. At 0 there is no delay, and a setting of 99 produces
an initial delay of approximately 10.7 seconds, which slowly increases over a period
of 10.7 seconds. With longer delay settings the modulation effect begins gradually
for a remarkably natural sound.
6: LFO PMD
This parameter sets the depth of pitch-variation simultaneously produced by LFO
modulation for all operators. This function is independent from pitch modulation
produced by the modulation wheel and breath controller, and is always ON once
set.
The data range is from 0 to 99. At 0 pitch modulation is OFF, and a setting of 99
produces the greatest pitch variation, dependent on the PITCH MODULATION
SENSITIVITY setting, described below (9). When the PITCH MODULATION
SENSITIVITY parameter is set to maximum (7), the maximum pitch variation (PM
DEPTH = 99) will be ±800 cents.
Even if this parameter is set to 0, pitch modulation can still be applied via the
modulation wheel or breath controller.
7: LFO AMD
This parameter sets the depth of amplitude variation (tremolo or wow) simul-
taneously produced by LFO modulation for all operators. This function is inde-
pendent from amplitude modulation produced by the modulation wheel or breath
controller, and is always ON once set.
The data range is from 0 to 99. At 0, amplitude modulation is OFF, and a setting
of 99 produces the greatest variation, dependent on the AMPLITUDE MODU-
LATION SENSITIVITY setting (10). When the AMPLITUDE MODULATION
SENSITIVITY parameter is set to maximum (3), the maximum amplitude variation
(AM DEPTH = 99) will be 96 dB peak-to-peak.
Even if this parameter is set to 0, amplitude modulation can still be applied via the
modulation wheel and breath controller.
8: LFO SYNC
3 3