Filter
Top Products
27—Mastering and CD-R/RW Operations
340 www.rolandus.com Roland VS-2480 Owner’s Manual
CD audio is recorded at bit depth of a 16 bits. If you’ve recorded a project at 24 bits, the
VS-2480 dithers its audio down internally to the required 16 bits during mastering—if
you’re using the CDR recording mode (Page 340)—or during CD burning.
What’s Recorded on an Audio CD
It’s important to understand that an audio CD contains just that: audio. None of your
VS-2480’s settings are written to an audio CD, only the audio that the settings produce.
It’s therefore critical that your final mix sound
exactly
as you want it to—with all of the
desired tracks, effects, live elements and so on—since that’s what the audio CD will
contain.
An audio CD can hold up to about 74 minutes worth of audio.
What is the Mastering Room?
An audio CD contains just two tracks of audio: a left and a right track. Your project must
therefore be mixed down to just two V-Tracks that can be burned onto a CD. On the
VS-2480, these two V-Tracks are called your “mastering tracks.” The Mastering Room is
where you create mastering tracks.
With its normal MTP recording mode (Page 97), the VS-2480 has a maximum of 24
tracks. When the Mastering Room is turned on, however, the VS-2480 has
26
tracks: 24
normal project tracks plus the two mastering tracks.
The Mastering room has two operating modes. When it’s set to:
•
Record
—You can listen to the signals from all of your input, track, Aux master and
FX return channels as you refine your mix and record it onto your mastering tracks.
•
Play
—You can play back your recorded mastering tracks. Input, track, Aux master
and FX return channel signals are silenced since their audio can now be heard in
the final mix recorded on the mastering tracks.
About Mastering Tracks
The mastering tracks that contain your final mix are always a pair of V-Tracks that
belong to Tracks 23 and 24. The 16th V-Tracks of Tracks 23 and 24 are selected as
mastering tracks by default, but you can select any same-numbered pair of V-Tracks
from Tracks 23 and 24 as long as they don’t contain audio you want to include in your
mix. We’ll describe how to select the desired V-Tracks on Page 344.
CD Disk Images
All commercially produced audio CDs conform to a set of standards called the “Red
Book” standards. The VS-2480 produces Red Book audio CDs.
Before the VS-2480 can burn audio onto a CD, it converts the audio into a Red Book-
compliant form of data called a “disk image file,” and stores the file on your internal
Dither
If all of the V-Tracks for Tracks 23 and/or 24 already contain audio you don’t want to
lose, copy that audio to other V-Tracks to make room for your mastering tracks—
mastering tracks can be recorded
only
on V-Tracks belonging to Tracks 23 and 24.
VS2480OMUS.book 340 ページ ２００６年２月７日 火曜日 午後４時１６分