Access Virus TI Series Quick Start Manual
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Brand: Access
Category: Electronic Keyboard , Synthesizer
Type: Quick start manual for Access Virus TI
Pages: 186 (2.02 Mb)
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QUICKSTARTMANUAL30
Modulators Section
‘Modulation’ is the term used to describe a function which changes the value of another parameter over
time. Specically for this purpose, the Virus has 3 LFOs or ‘Low Frequency Oscillators’. These are different
from the oscillators used to generate the sound, as they operate at much lower speeds.
The LFOs have been designed to run at independent rates, or to slave to the overall tempo of the current
patch or Multi. If they are set to Rate, then you can choose a value between 0 - 127, and if they are set to
Clock, you can choose a divider setting, based on a whole bar of 4/4, whereby 1/4 represents a rate equiva-
lent to quarter notes or crotchets.
Please select patch ROM B-122 ‘Tutorial 3’ before continuing.
LFO 1/2/3 Select •
Each LFO has its own SELECT button, which has two purposes: Firstly, it brings the RATE knob and the
buttons on the top row to the focus of the selected LFO. Secondly, it allows direct access to the parameters
assigned to the selected LFO via the VALUE knobs beneath the display - press SELECT repeatedly to cycle
through the available options (watch the display!).
LFOs 1 and 2 can target several parameters at once by this method - once you have set the value of any
parameter to anything other than +0, the respective LED will light up to indicate that this parameter is being
modulated.
LFO 3 can only target one parameter from the Assign Target list which you select with the VALUE 2 knob.
Listen carefully to the ‘Tutorial 3’ patch which uses all 3 LFOs, and see if you can hear all the modulations
happening within it. By adjusting the RATE knob for each LFO, you should nd it easier to hear what each
one is doing.
(LFO) Edit •
Press the (LFO) EDIT button to access parameters relevant to the selected LFO.
Env Mode •
In some situations it can useful to have the LFO generate only a single cycle, which effectively makes it be-
have just like an envelope. Press ENV MODE to toggle between the normal, cyclic mode and Envelope (one-
shot) Mode.
Shape •
Press SHAPE repeatedly to cycle through the basic selection of waveforms for the selected LFO. ‘WAVE’
defaults to S&H (Sample & Hold) which generates random values, but you can also select from S&G (Sample
& Glide) or any of the spectral waveforms in the EDIT menu.