User manual

Table Of Contents
216
VST instruments and instrument tracks
Constrain Delay Compensation
Cubase features full delay compensation throughout the
entire audio path. This means that any delay inherent in the
VST plug-ins you use will automatically be compensated
for during playback, so that all channels are kept in perfect
sync (see
“About plug-in delay compensation” on page
189).
However, when you play a VST instrument in realtime or
record live audio (with monitoring through Cubase acti-
vated), this delay compensation may sometimes result in
added latency. To avoid this, you can activate the Con
-
strain Delay Compensation button on the Project window
toolbar. This function tries to minimize the latency effects
of the delay compensation, while maintaining the sound of
the mix as far as possible.
In the Preferences dialog (VST page) you will find a set-
ting called Delay Compensation Threshold. Only plug-ins
with a delay higher than this setting will be affected by the
Constrain Delay Compensation function.
VST plug-ins (with higher delay than the threshold
value) which are activated for VST instrument channels,
audio track channels that are record enabled, group chan-
nels and output channels will be turned off when you acti-
vate Constrain Delay Compensation.
VST plug-ins activated for FX channels are not turned
off but their delay is disregarded by the program (delay
compensation is turned off).
After recording or using a VST instrument with Constrain
Delay Compensation, turn off the function in order to re
-
store full delay compensation.
External instruments (Cubase only)
An external instrument bus is an input (return) to your audio
hardware, along with a MIDI connection via Cubase and
few additional settings. External instrument busses are cre-
ated in the VST Connections window. All external instru-
ment busses you have created will appear on the VST
Instrument pop-up menus and can be selected in the same
way as any VST instrument plug-in. If you select an external
instrument, you play it via MIDI as usual (you have to create
a MIDI device to play it) and the sound (synth audio output)
will come in to the VST environment where you can apply
processing, etc. For more information on external instru
-
ments, see “Setting up external instruments” on page 32.