Справочник Пользователя для Access virus os4
ACCESS VIRUS OS4
215
Organizational Information
nal sound generation 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).
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 con-
troller), HiPage to PolyPrs (MIDI
polypressure). There are only 128
controller numbers per MIDI chan-
nel, so that not all parameters of a
Virus PART can be covered by con-
trollers. On the Virus, this problem
was solved by splitting up its
parameters into three Parameter
PAGEs for data transport purposes.
Each of these three PAGEs can con-
tain up to 128 parameters. A SIN-
GLE program consists of the
parameters of the two first PAGEs.
Parameters of the first PAGE are
assigned to the MIDI controllers,
while the parameters of the sec-
ond PAGE are sent and received by
so-called polypressure data. This
structure of this data type is iden-
called LoPage and HiPage: LoPage
should be set to Contr (MIDI con-
troller), HiPage to PolyPrs (MIDI
polypressure). There are only 128
controller numbers per MIDI chan-
nel, so that not all parameters of a
Virus PART can be covered by con-
trollers. On the Virus, this problem
was solved by splitting up its
parameters into three Parameter
PAGEs for data transport purposes.
Each of these three PAGEs can con-
tain up to 128 parameters. A SIN-
GLE program consists of the
parameters of the two first PAGEs.
Parameters of the first PAGE are
assigned to the MIDI controllers,
while the parameters of the sec-
ond PAGE are sent and received by
so-called polypressure data. This
structure of this data type is iden-
tical to that of controllers; poly-
pressure is also supported by
sequencer programs. (This data
type was initially created to allow
the pressure exerted on keys to be
transmitted polyphonically, but
this required a special approach to
playing that never really caught
on. The Virus is the first instrument
to exploit this data type in the
interest of putting further control-
lers at your disposal.)
pressure is also supported by
sequencer programs. (This data
type was initially created to allow
the pressure exerted on keys to be
transmitted polyphonically, but
this required a special approach to
playing that never really caught
on. The Virus is the first instrument
to exploit this data type in the
interest of putting further control-
lers at your disposal.)
Please note that the Virus allows
you to control several PARTs via the
same MIDI channel. This means
that an incoming controller would
collectively address this parameter
in all PARTs. This of course defeats
the purpose of routing several of
these PARTs via the same channel,
which is to double up different
sounds. For this reason, the conven-
tion in the Virus is that, when sev-
eral of these PARTs are patched
through a single MIDI channel, only
the PART with the lowest PART
number is addressed by incoming
controllers; all other PARTs ignore
this data. This applies solely to
sound parameters and not to so-
called performance controllers such
as the modulation wheel.
same MIDI channel. This means
that an incoming controller would
collectively address this parameter
in all PARTs. This of course defeats
the purpose of routing several of
these PARTs via the same channel,
which is to double up different
sounds. For this reason, the conven-
tion in the Virus is that, when sev-
eral of these PARTs are patched
through a single MIDI channel, only
the PART with the lowest PART
number is addressed by incoming
controllers; all other PARTs ignore
this data. This applies solely to
sound parameters and not to so-
called performance controllers such
as the modulation wheel.