Pulse width modulation
The Pulse section
The three parameters in the
Pulse
section are responsible for controlling the pulse width of the first oscillator in the
VCO
section:
•
Width
- Controls the pulse width of the square wave.
•
Mod
- Decides the amount of pulse width modulation by a modulation source.
•
Source
- Selects the modulation source:
LFO1
,
LFO2
,
ENV1
,
ENV2
.
A PWM diagram
Hard sync
Usually,
Hard Sync
requires two oscillators; one of them restarts the period of the second one. The
Master
oscillator
has a constant frequency based only on a MIDI note’s frequency; the
Slave
oscillator has a frequency based on note
frequency, varied by additional modulation sources (like
Envelope
or
LFO
). In
Hard Sync
mode, the
Master
oscillator, as
it reaches the end of its phase, also restarts the
Slave
oscillator’s phase. In
Lush 2
,
Hard Sync
is achieved using a second
hidden oscillator for
Pulse
and
Sawtooth
generators.
Hard Sync
can be controlled and activated in
the
Hard Sync
section of the GUI.
The Hard Sync section
22
layeR PaRameteRs •
sOund synthesis