Frequency Modulation - Korg PA1X User Manual

Offset
This parameter specifies the central value of the LFO waveform.
For example, with a setting of 0 as shown in the following dia-
gram, the vibrato that is applied will be centered on the note-on
pitch. With a setting of +99, the vibrato will only raise the pitch
above the note-on pitch, in the way in which vibrato is applied
on a guitar.
When "Waveform" is set to Guitar, the modulation will occur
only in the positive (+) direction even if you set "Offset" to 0.
Here are offset settings and pitch change produced by vibrato:
Pitch offset = –99
Pitch at note-on
-99...+99 Offset value.
Key Sync
This parameter specifies if the LFO is synchronized to key
strokes.
On The LFO will start each time you play a note, and
an independent LFO will operate for each note.
Off The LFO effect that was started by the first-played
note will continue to be applied to each newly-
played note. (In this case, Delay and Fade will be
applied only to the LFO when it is first started).
Fade
This parameter specifies the time from when the LFO begins to
apply until it reaches the maximum amplitude. When "Key
Sync." is Off, the fade will apply only when the LFO is first
started.
Here is how "Fade" affects the LFO (when "Key Sync" is On):
Note-on
Fade
Delay
00...99 Fade rate.
Delay
This parameter specifies the time from note-on until the LFO
effect begins to apply. When "Key Sync" is Off, the delay will
apply only when the LFO is first started.
0...99 Delay time.

Frequency Modulation

You can use two alternate modulation sources to adjust the
speed of the LFO1 for the selected oscillator.
AMS1 (Alternate Modulation Source1)
Selects the source that will adjust the frequency of the selected
oscillator LFO1 (see "AMS (Alternate Modulation Source) list"
on page 213). LFO1 can be modulated by LFO2.
offset = 0 offset = +99
Note-off
Sound operating mode
Intensity (AMS1 Intensity)
This parameter specifies the depth and direction of the effect
that "AMS1(F)" will have. When this parameter is set to a value
of 16, 33, 49, 66, 82, or 99, the LFO frequency being can be
increased by a maximum of 2, 4, 8, 16, 32, or 64 times respec-
tively (or decreased by 1/2, 1/4, 1/8, 1/16, 1/32, or 1/64 respec-
tively).
For example, if "AMS1(F)" is Note Number, positive (+) values
of this parameter will cause the oscillator LFO to speed up as you
play higher notes. Negative (–) values will cause the oscillator
LFO to slow down as you play higher notes. This change will be
centered on the C4 note.
If "AMS1(F)" is set to JS +Y, raising the value of this parameter
will cause the oscillator LFO1 speed to increase as the joystick is
moved away from yourself. With a setting of +99, moving the
joystick all the way away from yourself will increase the LFO
speed by approximately 64 times.
-99...+99 Intensity value.
AMS2 (Alternate Modulation Source2)
Intensity (AMS2 Intensity)
Make settings for a second alternate modulation source that will
adjust the frequency of the oscillator LFO1 (see above "AMS1
(Alternate Modulation Source1)" and "Intensity (AMS1 Inten-
sity)").
Frequency MIDI/Tempo Sync
MIDI/Tempo Sync
This parameter enables/disables the LFO synchronization with
Sequencer 1 Tempo.
On The LFO frequency will synchronize to the tempo
(MIDI Clock) of Sequencer 1. In this case, the
values you specified for "Frequency" (see
page 208) and "Frequency Modulation" (see
page 209) will be ignored.
Base Note
When "MIDI/Tempo Sync" is On, these parameters set a note
length relative to " (Tempo)" and the multiple ("Times") that
will be applied to it. These parameters will determine the fre-
quency of the LFO1. For example if "Base Note" is
note) and "Times" is 04, the LFO will perform one cycle every
four beats.
Even if you change the " (Tempo)" setting of Sequencer 1, the
LFO will always perform one cycle every four beats.
This parameter is not available when editing a Drum Kit.
, , , , , , ,
Note value.
Times
This parameter is not available when editing a Drum Kit.
1...16 Beats before restarting the cycle.
209
LFO: LFO1
(quarter