User`s guide

Chapter 8: Record Setup 77
▲ If have a SampleCell II Plus card, a buffer
size of 128 should not be used when running
the SampleCell Editor at the same time as
Pro Tools LE. Use a larger buffer setting to
avoid performance errors.
The following table lists the amount of
monitoring latency (in ms) you can expect
from the four Buffer Sizes.
Low Latency Monitoring
(Pro Tools LE Only)
You can reduce the amount of monitoring
latency for Pro Tools LE systems by reduc-
ing the Hardware Buffer Size. However,
even at the smallest Buffer Size, there is still
some latency. In addition, reducing the
Buffer Size limits the number of simulta-
neous audio tracks you can record without
encountering performance errors.
Digi 001 and Audiomedia III systems can
use the Low Latency Monitoring option to
record with an extremely small amount of
monitoring latency, to as many tracks as
each system supports.
To use Low Latency Monitoring:
1 Record enable the desired audio tracks
(or Auxiliary Inputs) by clicking their
Record buttons. Only tracks with inputs set
to an audio interface (not a bus) use Low
Latency Monitoring.
2 From the Output Selector, assign each
track to either Output 1 or Output 2. Only
tracks assigned to these outputs use Low
Latency Monitoring.
3 Select Operations > Low Latency Moni-
toring.
When Low Latency Monitoring is enabled,
any plug-ins and sends assigned to record-
enabled tracks (routed to Outputs 1–2) are
automatically bypassed, and must remain
bypassed. Also, these tracks will not register
on meters for Master Faders.
Sample
rate
(kHz)
Buffer
Size
(samples)
Latency
Amount
(ms)
Use for:
44.1
128 2.9 recording drums and
other timing-critical
instruments
256 5.8 recording vocals and
instruments with
slower attacks
(bass, guitar, etc.)
512 11.6 mixing with 24
tracks
1024 23.2 final mixdown or
many plug-ins
48
128 2.7 recording drums and
other timing-critical
instruments
256 5.3 recording vocals and
instruments with
slower attacks
(bass, guitar, etc.)
512 10.7 mixing with 24
tracks
1024 21.3 final mixdown or
many plug-ins
How Hardware Buffer settings affect latency