User Manual

Pro Tools Reference Guide434
These settings can also be used to correct for pull
up or pull down problems. For example, you may
receive an AAF or OMF transfer from a Film
Composer that contains audio media at “film
speed” when played back at 48 kHz. You may
want to convert all the audio files and edits to play
back at NTSC video speed and 48 kHz.
In this case, set the Source Audio Sample Rate set-
ting to 47,952 and the Destination Audio Sample
Rate to 48,000. These settings tell Pro Tools that
you want to fit 47,952 of the original “film speed”
samples into 48,000 of the new “video speed” sam-
ples. With these settings, you sample-rate-convert
the material to NTSC video speed.
You can set the Source Audio Sample Rate either
by selecting one of the predefined sample rates
from the pop-up menu, or by typing a value into
the text box.
Destination Sample Rate
This setting determines the target session or proj-
ect audio sample rate setting, as shown in the Ses-
sion Setup window, and the sample rate of all au-
dio files in the target session or project. Available
settings include Pro Tools standard sample rates of
44.1 kHz or 48 kHz. HDX and HD Native systems
support sample rates higher than 48 kHz
(88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz).
If this setting differs from the Source Audio Sam-
ple Rate setting, audio is sample-rate converted
digitally to the Destination Audio Sample Rate.
Conversion Quality Pop-Up Menu
This pop-up menu lets you select settings corre-
sponding to Pro Tools sample rate conversion set-
tings. The
Tweak Head (Slowest) option provides
the best results.
AAF/OMF Source Track
Translation Settings
Pro Tools provides specific options for “translat-
ing” audio clips when importing AAF sequences
or OMF files and sequences.
Import Rendered Audio Effects
Enabling the Import Rendered Audio Effects op-
tion imports clips as audio clips, retaining the ren-
dered effects (such as EQ) that were applied to the
clip. You may want to disable this if you plan to
use Pro Tools audio effects and audio processing
exclusively for your audio post production work.
The resulting audio with this setting disabled is the
unprocessed source material.
Import Clip Gain
The Import Clip Gain setting lets you import clip-
based gain settings, or ignore clip-based gain en-
tirely. Media Composer and other Avid products
provide clip-based gain to adjust the volume of an
individual audio clip.
Clip-based gain differs from standard Pro Tools
volume adjustments for an entire track, or volume
breakpoint automation. Enable this option to im-
port clip-based gain data from the incoming se-
quence.
Import Volume Automation
The Import Volume Automation setting lets you
import volume breakpoint automation, or ignore it
entirely. Media Composer and other Avid products
provide volume automation, for continuous vol-
ume change throughout a sequence.