Awm Lfo - Yamaha SY77 Operating Manual

VOICE EDIT MODE
Negative settings (-1...-7) are effective only for
EG Bias. When Amplitude Modulation Sensi-
tivity is set to a negative value, the controller
assigned to EG Bias by the setting in Voice
common data, 12. ( F 4 ) Controller set (JUMP
#228) will decrease the amplitude of the AWM
element, and the LFO will have no effect. For
example, two AWM elements in a voice might
be given opposite Amplitude Modulation Sensi-
tivity settings, so that the controller assigned to
EGbiasDepth would crossfade between the two
elements.
Pitch Modulation Sensitivity (Pitch Mod Sens =
0...7): Pitch Modulation Sensitivity determines
how greatly the pitch of the AWM element will
be affected by Pitch Modulation from the LFO.
AWM ELEMENT DATA
Summary: The AWM element LFO creates a cycli-
cally changing control signal that can be used to
create tremolo (Amplitude modulation), vibrato
(pitch modulation),
modulation).
Procedure:
From: AWM Element job
directory
Select: job 05:LFO
Specify: the LFO parameters
Wave (triangle, saw down, saw up, square,
sine, sample&hold): This selects the wave
(shape of modulation) produced by the AWM
LFO. The selected wave is graphically displayed
in the LCD. When sample&hold is selected, the
LFO will produce a control signal whose level
will change randomly at intervals of time deter-
mined by the Speed setting.
Speed (0...99): The speed of the LFO modula-
tion. Higher settings result in faster modulation.
144

5. AWM LFO

and. wah-wah (filter
(JUMP #256)
(JUMP #261)
Amplitude Modulation Sensitivity and Pitch
Modulation Sensitivity: These settings deter-
mine the sensitivity of the AWM element to the
Amplitude Modulation Depth (AMD) and/or
Pitch Modulation Depth (PMD) produced by the
AWM element LFO. If the LFO settings for
AMD and/or PMD are set to 0, these settings
will have no effect.
Delay (0...99): The time delay before the LFO
modulation begins.
Amplitude Modulation Depth (0...127): This
determines how greatly the LFO will affect the
output level (amplitude) of the operators.
Pitch Modulation Depth (0...127): This deter-
mines how greatly the LFO will affect the pitch
of the operators.
Filter Modulation Depth (0...127): This deter-
mines how greatly the LFO will affect the cutoff
frequency of the filter.
Initial Phase (0...99): This determines the point
of the LFO waveform from which the LFO will
start each time a key is pressed.
Wave, Speed, Delay, Initial Phase: Detailed
explanations and diagrams of these parameters
are given in AFM element job 6.1 LFO (Main).
Amplitude Modulation Depth and Pitch Modula-
tion Depth: For these setting to have an effect,
the AModSens (amplitude modulation sensi-
tivity) or PModSens (pitch modulation sensi-
tivity) of the AWM element must be set above
0. Make these settings in AWM element job
4. AWM sensitivity (JUMP #260).