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Line 6 GearBox 3.1 – Basic Features Guide
MIDI automation means using MIDI messages, either from an external controller like a KB37, or
from the host application, to modify parameter settings on the target plug-in. Most host applications,
such as Cubase or SONAR, provide robust MIDI sequencing capabilities, allowing you to literally
draw MIDI controller changes (MIDI automation), which then get sent to track plug-ins or externally,
to outboard gear. The latter example is the most common use of MIDI before the rise in popularity of
plug-ins.
Today the most common use of MIDI with plug-ins is simply to control them from a tactile control
surface or, in the case of software instruments, from a MIDI keyboard. This is called MIDI remote
control, because the MIDI control messages are coming from an external (remote) source. To
successfully use MIDI remote control, you must know what parameters respond to a given MIDI CC
function. Manufacturers typically supply this information with their product.
Plug-in automation means controlling plug-in parameters from with the host application.
Conceptually this is similar to MIDI automation, in that you create automation within the track of the
host application. The automation sends parameter change values to the plug-in. But there are a couple
distinct advantages:
• Plug-in automation is sample accurate (far more accurate than MIDI). This high resolution
allows you to create smooth curves and fades, without any stair-stepping effect, ideal for
critical, professional applications.
• Plug-in automation parameters carry the actual names of the parameters, where as MIDI
requires mapping generic MIDI control functions to various plug-in parameters.
Plug-in Formats
There are quite a few available plug-in formats in the digital audio recording world. The GearBox
Plug-in uses the VST® (Virtual Studio Technology) format for Windows® recording environments,
and the AU® (AudioUnits) format on the Mac® platform, and RTAS® (Real Time Audio Suite) for
both Mac and Windows, for compatibility with the vast majority of audio recording software on the
market.
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