Specifications
DigiRack Plug-Ins Guide22
2 Change the value.
•To increase a value, press the Up Arrow on
your keyboard. To decrease a value, press
the Down Arrow on your keyboard.
– or –
•Type the desired value.
3 Do one of the following:
• Press Enter on the numeric keyboard to in-
put the value and remain in keyboard edit-
ing mode.
– or –
• Press Enter on the alpha keyboard (Win-
dows) or Return (Macintosh) to enter the
value and leave keyboard editing mode.
Enabling Switches
To enable a switch, click on the switch.
Side-Chain Processing
Some plug-ins (such as the Compressor, Limiter,
Gate, and Expander/Gate) feature side-chain
processing capabilities. With side-chain process-
ing you can trigger a plug-in from a separate ref-
erence track or external audio source. The source
used for triggering is referred to as the Key Input.
Key inputs are monophonic.
A typical use for this feature is to control the dy-
namics of one audio signal using the dynamics
of another signal (the Key Input). For example, a
kick drum track could be used to trigger gating
of a bass track to tighten it up, or a rhythm gui-
tar track could be used to gate a keyboard pad.
Key Input Filters
Some plug-ins feature key high-pass and low-
pass filters. These controls let you define a spe-
cific frequency range in the Key Input signal
with which to trigger the plug-in effect. A com-
mon production technique is to use these con-
trols to filter a drum track so that only specific
high frequencies (a hi-hat, for example) or low
frequencies (a tom or a kick, for example) trigger
the effect.
Using a Key Input for Side-Chain
Processing:
To use a Key Input for side-chain processing:
1 Click the Key Input Selector and select the in-
put or bus carrying the audio you want to use to
trigger the plug-in.
2 Click External Key to activate side-chain pro-
cessing.
In fields that support values in kilohertz,
typing “k” after a number value will multi-
ply the value by 1,000. For example, type
“8k” to enter a value of 8,000.
To move forward through the different con-
trol fields, press the Tab key. To move back-
ward, press Shift+Tab.
RTAS plug-ins do not provide side-chain
processing when used on TDM-based sys-
tems. If you want to use side-chain process-
ing, use the TDM versions of plug-ins on
TDM-based systems.
Selecting a Key Input