Yamaha SY-35, Reference Manual

Page: 27 / 83

ELEMENT TONE
22
LFO (Low Frequency Oscillator) AM Depth, PM Depth, Type, Delay, Rate & Speed
l AM (Amplitude Modulation Depth)
ET LFO ABCD
AM= 0 PM= 0
Summary: Determines the maximum amount of
amplitude modulation that can be applied to the
selected element by the modulation wheel or
keyboard after touch.
Settings: 0 ... 15
Procedure: Use the [
4
] and [
6
] cursor keys to select
the AM parameter. Use the [–1/NO] and
[+1/YES] keys to set the desired degree of
amplitude modulation.
Details: A “ 0 ” setting produces no modulation
while a setting of “ 1 5 ” produces maximum
modulation. Amplitude modulation produces a
periodic variation in the volume of the sound,
thus creating a tremolo effect.
Please note that the AM parameter of the
WHEEL and/or AFTER TOUCH function in the
VOICE COMMON edit mode must be set to
“ o n ” before amplitude modulation can be
applied manually (see page 7). Amplitude
modulation is applied automatically when these
parameters are off.
l PM (Pitch Modulation Depth)
ET LFO ABCD
AM= 0 PM= 0
Summary: Determines the maximum amount of
pitch modulation that can be applied to the
selected element by the modulation wheel or
keyboard after touch.
Settings: 0 ... 31
Procedure: Use the [
4
] and [
6
] cursor keys to select
the PM parameter. Use the [–1/NO] and
[+1/YES] keys to set the desired degree of pitch
modulation.
Details: A “ 0 ” setting produces no modulation
while a setting of “ 3 1 ” produces maximum
modulation. Pitch modulation produces a
periodic pitch variation, thereby creating a
vibrato effect.
Please note that the PM parameter of the
WHEEL and/or AFTER TOUCH function in the
VOICE COMMON edit mode must be set to
“on” before pitch modulation can be applied
manually. Pitch modulation is applied automati-
cally when these parameters are off.
l Type
ET LFO ABCD
AM= 0 PM= 0
Summary: Determines the waveform of the LFO
for the selected element.
Settings:
SAW UP SAW DOWN TRIANGLE
SQUARE SAMPLE&HOLD
Procedure: Use the [
4
] and [
6
] cursor keys to select
the waveform parameter. Use the
[–1/NO] and [+1/YES] keys to select the desired
LFO waveform.
Details:
= Upward sawtooth.
= Downward sawtooth.
= Triangle.
= Square.
= Sample and hold.