Digi XPress Specifications download pdf (Page 96)

DigiRack Plug-ins Guide90

TimeAdjuster

The TimeAdjuster plug-in provides three func-

tions:

• Compensation for delays due to TDM- or

RTAS-based routing

• Gain compensation (+/– 24 dB)

• Phase inversion for correcting out-of-phase

signals

The TimeAdjuster plug-in is an efficient way to

compensate for DSP or host-based processing

delays in your Pro Tools system.

There are three versions of the TimeAdjuster

plug-in, each of which supports different sam-

ple delay ranges:

Short Supports a maximum delay of 256 sam-

ples at all sample rates.

Medium Supports a maximum delay of 2048

samples at all sample rates.

Long Supports a maximum delay of 8192 sam-

ples at all sample rates.

TimeAdjuster Controls

Phase Invert Inverts the phase (polarity) of the

input signal. While most Digidesign plug-ins

supply a phase invert button of their own, some

third-party plug-ins may not. Phase inversion is

also useful for performing delay compensation

by tuning unknown delay factors by ear (see

“Using TimeAdjuster for Manual Delay Com-

pensation” on page 91).

Gain Provides up to 24 dB of positive or negative

gain adjustment. This control is useful for alter-

ing the gain of a signal by a large amount in real

time. For example, when you are working with

audio signals that are extremely low level, you

may want to adjust the channel gain to a rea-

sonable working range so that a fader is posi-

tioned at its optimum travel position. Use the

Gain control to make a wide range of gain ad-

justment in real time without having to perma-

nently process the audio ﬁles, as you would with

an AudioSuite plug-in.

Delay Provides up to 8192 samples of delay com-

pensation adjustment, or general adjustment of

phase relationships of audio recorded with mul-

tiple microphones, depending on which version

of TimeAdjuster is used. It defaults to a mini-

mum delay of four samples, which is the delay

created by use of the TimeAdjuster plug-in itself.

While phase inversion controls have been used

for many years by engineers as creative tools for

adjustment of frequency response between mul-

tiple microphones, sample-level delay adjust-

ments provide far more control. Creative use of

this control can provide a powerful tool for ad-

justing frequency response and timing relation-

ships between audio signals recorded with mul-

tiple microphones.

TimeAdjuster plug-in

For special information on Delay Compen-

sation and Time Adjuster, see the Pro Tools

Reference Guide.

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