Organizational Information - Access Virus Rack User Manual

ORGANIZATIONAL INFORMATION

In order to be able to record the move-
ments of knobs and status changes of
buttons on the Virus to a sequencer, you
must connect the MIDI Out of the Virus
to the MIDI In of the computer or
sequencer. You also have to enable
reception of MIDI controllers and MIDI
polypressure commands in the sequencer
so that this data is not subject to one-
sided filtering. Whenever appropriate,
you also have to enable reception of this
automation data on the Virus. To this
end, go to the Cntrl menu and take a
look at the MIDI parameters. You'll find
a parameter called Panel that offers the
options Internal, Internal+Midi and
MIDI. This is where you determine the
destination to which the knobs and but-
tons send their data. Internal means that
the knobs and buttons send data exclu-
sively to the sound generator and not to
MIDI. Therefore, select Internal+Midi or
MIDI so that data is sent to the
sequencer via MIDI. Note that the MIDI
option disconnects the knobs and but-
tons from the Virus' internal sound gen-
eration system. When this setting is
enabled, data generated by knobs and
buttons is only acknowledged by the
Virus when it is routed back in a round-
about way via the computer/sequencer
(the Virus must be selected as a track
instrument in the sequencer and the
"Thru" function of the sequencer must
be activated).
Now scroll to the two parameters called
LoPage and HiPage: LoPage should be
set to Contr (MIDI controller), HiPage to
PolyPrs (MIDI polypressure). There are
only 128 controller numbers per MIDI
channel, so that not all parameters of a
Virus PART can be covered by controllers.
On the Virus, this problem was solved by
splitting up its parameters into three
Parameter PAGEs for data transport pur-
poses. Each of these three PAGEs can
contain up to 128 parameters. A SINGLE
program consists of the parameters of
the two first PAGEs. Parameters of the
first PAGE are assigned to the MIDI con-
trollers, while the parameters of the sec-
ond PAGE are sent and received by so-
called polypressure data. This structure
of this data type is identical to that of
controllers; polypressure is also sup-
ported by sequencer programs. (This
data type was initially created to allow
the pressure exerted on keys to be trans-
mitted polyphonically, but this required
a special approach to playing that never
really caught on. The Virus is the first
ACCESS VIRUS RACK 169
Organizational Information