LFO SECTION
This section contains all the Knobs & buttons associated with the LFOs. The LFOs ( Low Frequency Oscillators ) produce regular
electronic variation which are normally too low a frequency to be heard when converted into audio vibrations. However when used
to modify various elements of the sound they can be used to create regular changes in pitch ( Vibrato ) or Pulse width & Filter
Modulation. ( these create tonal changes in the waveforms ) for example.
Menu - Button
When this button is pressed a series of pages is available on the display containing parameters relevant to this section.
In the LFO section there are 5 pages available. These are selected using the page Up & page Down buttons to the left of the dis-
play.
There are a maximum of 2 parameters displayed on any page. One for each line on the display. The upper & lower Data knobs on
the right of the display are used to alter these parameter’s values.
Page 1 looks like so:
The higher parameter is “Offset amount”. In this case with a value of 000.
The Offset parameter controls an “Offset” ( or DC shift ) applied to the LFO waveform.. Use the upper data knob to adjust this
parameter. This allows the creation of realistic Stringed instrument Vibrato effects by making it possible to create vibrato that is only
up for example. Fully Anticlockwise there is no effect on the normal operation of LFO 1. Tuning the Data knob clockwise of this
position introduces an increasing amount of offset applied to the selected LFO’s waveform until at fully clockwise the LFO’s wave-
form is only in the upwards direction. The range of this parameter is 000 to 127. This parameter is memorised with a Program.
Page 2 looks like so:
The higher parameter is “LFO slew amount”. In this case with a value of 000.
This parameter determines how fast the selected LFO can change to another value ( a bit like portamento ). Use the upper data
knob to adjust this parameters value. In the 000 position ( fully anticlockwise ) no slewing is applied to the selected LFO & the LFO
behaves normally. Turning the upper data knob introduces the slewing effect. The range of this parameter is 000 to 127. This para-
meter is memorised with a Program.
The lower parameter is “Env 3 speed mod”. In this case with a value of +63.
This parameter determines how the Env 3 effects the speed of the selected LFO. In the central position of the lower Data knob
there is no change to the selected LFO’s speed. Anticlockwise of centre there will be an increasing amount of negative modulation.
i.e. the selected LFO will slow down as the Envelope rises & speed back up as the envelope falls. Clockwise of centre there will be
an increasing amount of positive modulation. i.e. the selected LFO will speed up as the Envelope rises & slow down as the enve-
lope falls. The range of this parameter is -64 to +63. This parameter is memorised with a Program.
LFO slew amount OOO
Env 3 speed mod +63
Offset amount OOO
delay
menu
lfo 1
lfo 2
tri
saw
s/h
square
speed
LFOs
PRO-X
88
Summary of Contents for Supernova II
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