Depending on the
Invert
button’s state, the envelopes are straight or inverted.
The envelope’s Invert button
LFO1 and LFO2
In the
Layer
parameters section,
there are two multipurpose
Low Frequency Oscillators
, with control parameters for each
located in sections
LFO1
and
LFO2
of the GUI:
LFO1 and LFO2 sections
Both
LFOs
can be used for controlling sound pitch, filter parameters, pulse width or sound amplitude. There are two
main parameters for an
LFO
:
•
Waveform
- Clicking the display we can choose one of
5
available waveforms:
•
Triangle
•
Square
•
Sawtooth
•
Random
•
Noise
•
Rate
- Defines the frequency of the
LFO
, except for the
Noise
waveform which isn’t affected by frequency.
Further parameters controlling the
LFO
work mode:
•
Reset
- Decides what conditions reset the
LFO
(set on the beginning of each period) - see the next manual
section for details.
•
Sync
- (Tempo synchronization) Selects an
LFO’s
synchronization with the tempo. By default, the
LFO
is inter
-
nally timed (
Sync
is set to off). When we set
Sync
to any other value, the frequency of the
LFO
will depend on
the tempo set in a host application and the
Rate
becomes a discrete parameter that sets the rate relative to the
tempo, in notation values.
•
Track
(Keyboard tracking) - Lets the frequency of the note affect the
LFO
frequency when turned on. With this
feature, we can achieve a simple FM synthesis (modulating a frequency of
VCO
with an
LFO
).
•
Mono
(mode) - (Turned off by default) In
Poly
mode with
Mono
switched on, all voices in the
Layer
have
LFOs
synchronized together in phase, giving the impression of a single
LFO
controlling all
Layer
voices at once.
25
layeR PaRameteRs •
sOund synthesis
