Digi XPress Specifications download pdf (Page 19)

Chapter 3: Working with Real-Time Plug-ins 13

The Minimize Additional I/O Latency option is

only available if the Ignore Errors During Play-

back/Record option is enabled.

This option is only available on Pro Tools sys-

tems that require additional buffering for RTAS

error suppression, as follows:

• Windows XP:

• Mbox

®

2 Pro

• Digidesign-qualiﬁed M-Audio interfaces

with Pro Tools M-Powered or Pro Tools Ac-

ademic

• Mac OS X:

• Mbox

• Mbox 2

• Mbox 2 Pro

• Mbox 2 Mini

• Digi 002

®

and Digi 002 Rack

• All Pro Tools M-Powered systems

• All Pro Tools Academic systems

RTAS Plug-ins on Auxiliary Inputs or

Master Faders

With Pro Tools HD, RTAS plug-ins can be in-

serted on Auxiliary Input and Master Fader

tracks, or after TDM plug-ins on any kind of

track.

This can affect voice usage and total latency,

and limitations on inserting or removing plug-

ins during playback. For more information, see

“RTAS Plug-ins on Auxiliary Input and Master

Fader Tracks” on page 27.

Delay in Signal Processing

DSP and host-based processing in digital audio

systems incurs signal delay of varying amounts.

Such delays can vary from as short as few sam-

ples to as long as several hundred samples, de-

pending on the type of processing applied.

If you have recorded an instrument on multiple

tracks using multiple microphones (a drum kit

for example) and process the different tracks

with different plug-ins, the tracks may go out of

phase. You will then need to compensate for

these delays to avoid phase cancellation prob-

lems.

Compensating for Delay

Use the following methods, as available, to com-

pensate for processing delay.

Delay Compensation

Use Delay Compensation to automatically cal-

culate and compensate for processing delay. For

more information on Delay Compensation, see

the Pro Tools Reference Guide.

See Appendix B, “DSP Delays Incurred by

TDM Plug-ins” for information on delays

inherent in specific DigiRack TDM plug-

ins. See the

Pro Tools Reference Guide for a

guide to calculating DSP-induced delays.

Delay Compensation is automatically en-

abled on Pro Tools LE systems and cannot

be turned off.

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