Reference Guide

872 Mixing
Sidechaining
Canceling changes made to real-time plug-ins
EnablePluginCancelButton=<0 or 1>, default = 0
In SONAR 4.0.2 and earlier, opening the property page of a VST plug-in during playback could result
in a slight disruption in playback.
The cause for this problem has its roots in the little Cancel button that sits in the top right corner of
the plug-in's property page. The purpose of this button is to allow the user to cancel out of any
changes they might have made to the plug-in, restoring back to whatever state the plug-in was in
before they opened the GUI window. To make this work, SONAR would need to take an initial
snapshot of the plug-in's state, and some plug-ins with large amounts of preset data could cause an
audio hiccup if the data was captured for the Cancel button.
To address this issue, SONAR 4.0.3 (and later) does not take a snapshot of the plug-in's state by
default, and the Cancel button is not available. There is a new Cakewalk.ini variable to bring
back the Cancel button if desired, but be aware that this may also result in hiccups when opening
VST plug-ins during playback.
This variable should be set in the [WinCake] section. For example:
[WinCake]
EnablePluginCancelButton=1
Sidechaining
SONAR supports multi-input plug-ins, which are typically sidechain plug-ins that have two inputs: a
primary input and a sidechain input.
When SONAR detects such a plug-in in an effects bin, a virtual output port is created for each extra
input exposed by the plug-in. Audio track, Bus and Send outputs can be routed to sidechain inputs.
Sidechaining is typically used with compressors to limit one signal depending on the signal level of
another. Common applications are to reduce the level of a bass guitar when there is a kick drum, or
to reduce the level of music whenever a speaker talks (often used for background music in radio-
and television programs). There are of course many more applications that are not mentioned here.
SONAR includes the following plug-ins that support sidechaining:
• Sonitus Compressor
• Sonitus Gate
• Vintage Channel VC-64 (Producer only)
In addition, ProChannel (Producer only) supports sidechaining when using the PC4K S-Type Bus
Compressor mode. For details, see “ProChannel (Producer only)” on page 963.