Universal Audio UAD, Руководство пользователя

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UAD Powered Plug-Ins Manual - 313 - Chapter 28: Little Labs IBP
Little Labs IBP Controls
All parameters are clearly labeled with control names. Please refer to
Figure 103 on page 312 for control descriptions.
Delay Adjust The Delay Adjust parameter is unique to Universal Audio’s “workstation” ver-
sion of the Little Labs IBP. Delay Adjust is a continuously variable control that
simply delays the input signal from 0.0 to 4.0 milliseconds.
Unlike the “analog” Phase Adjust parameter, which is frequency dependent,
Delay Adjust is purely “digital” and shifts all frequencies equally. Delay Ad-
just accomplishes the same function as manually moving an audio region for-
wards in the timeline so it plays back a little later in relation to other regions.
Delay Adjust
Bypass
This switch bypasses the Delay Adjust parameter. Delay Adjust is bypassed
when the switch is engaged (darker).
Phase Adjust Phase Adjust is the main parameter in the Little Labs IBP. It is a continuously
variable control that shifts the phase of the input signal. The range of Phase
Adjust is either 90° or 180°, dependent on the Phase Adjust 90°/180°
switch.
The Little Labs IBP hardware is an all-analog device that uses analog allpass
filters to produce phase shifting. Allpass filters displace signals in time as a
function of frequency (they are frequency dependent). The modeled UAD ver-
sion accurately models the hardware along with all its idiosyncrasies.
Therefore phase shifting using the Phase Adjust knob is not “perfect” like
mathematically-manipulated signals in the digital domain. When Phase Ad-
just is set to 180° on one of two identical tracks side-by-side, the signals will
not cancel as you may expect.
Note: If a “standard” 180° phase shift is desired, use the Phase Invert switch.
If “digitally pure” frequency-independent phase shift is desired, use the Delay
Adjust parameter.
Phase Adjust
Bypass
This switch bypasses the Phase Adjust parameter. The signal phase is normal
when the switch is engaged (darker).
Phase Invert
This switch inverts the polarity of the input signal, like the phase button on a
mixing console. Phase is inverted when the switch is engaged (darker).