User`s guide

Chapter 22: Mixdown and Mastering 319
Genre
Choose a genre for the file. This in-
formation is displayed by many MP3 play-
ers, and can appear in searchable catalogs
and databases.
Track Number If you select ID3 tag type
v1.1 or v2.3, you can enter a CD track num-
ber for the file. This information is dis-
played by many MP3 players.
Year Enter a year for the file. This informa-
tion is displayed by many MP3 players.
Advanced Settings
The options listed under Advanced Set-
tings, under normal situations, do not need
to be changed from their default values.
Pad To Match Bit Rate Exactly This option
determines whether MP3 frames are pad-
ded to maintain bit rate very precisely. You
should only select this option if you need a
file with an exact bit rate, for applications
like synchronous transmission over an
ISDN line.
▲ Padding of MP3 frames can cause problems
with some versions of Internet streaming soft-
ware. If your files are destined for desktop or
Internet delivery, do not select this option.
Allow Intensity Stereo Coding
This option
determines whether the encoder takes into
account the frequency of a signal when en-
coding its phase characteristics, allowing
for more compression at low bit rates. In
most cases, you should leave this option se-
lected. However, if you are working with
highly phase-dependent material, such as
Dolby Surround, you may want to deselect
this option.
Write CRC Checksums This option adds er-
ror-detection data to the MP3 file, which
isn’t necessary for most computer and In-
ternet applications, and also takes away
from the space available for audio data. Se-
lect this option only if you are sure your de-
livery mode requires error correction.
Copyrighted This option sets a bit in the
MP3 data stream to indicate that the audio
is copyrighted. Not all MP3 players use this
information. Selecting this option does not
guarantee that the audio file will not be
copied.
Original This option sets a bit in the MP3
data stream to indicate that the audio is the
original media for the track, rather than a
copy. This setting is not widely used.
Private This option sets a bit in the MP3
data stream that is interpreted differently
by various applications. It is not normally
used.
Mac File information If you expect your file
to be used on a Macintosh, you can enter
the Macintosh file type and creator. This
will allow users to double-click the file to
open their MP3 player.
Defaults To restore all settings in this dialog
to their default values, click Defaults.
Auditioning MP3 clips
If you are using Digidesign Sound Drivers
and want to use an MP3 player to audition
an MP3 file while running Pro Tools, make
sure that Operations > Active in Back-
ground is not selected so your MP3 player
can use the Digidesign hardware.