ardour/manual/xml/exporting_to_cd.xml
Paul Davis 45d3ec1437 merged with 1697 revision of trunk (which is post-rc1 but pre-rc2
git-svn-id: svn://localhost/ardour2/branches/2.1-staging@1698 d708f5d6-7413-0410-9779-e7cbd77b26cf
2007-04-11 13:07:51 +00:00

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<?xml version="1.0" standalone="no"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
]>
<section id="sn-exporting-to-cd">
<sectioninfo>
<authorgroup>
<author>
<personname>
<firstname>Nick</firstname>
<surname>Mainsbridge</surname>
</personname>
</author>
</authorgroup>
</sectioninfo>
<title>Exporting to CD</title>
<section id="table-of-contents">
<title>Table of Contents </title>
<para>
A Table of Contents is a description of the data stored on a medium.
In the case of audio Cds, the TOC comes in the form of PQ data which
is intermingled with the audio data whaen the CD is burnt. Because PQ
data isn't part of 'normal' audio file formats such as wav or aiff,
this information must be stored in a separate file on your computer (a
CUE or TOC file) ready for use by your CD burning software which will
combine the two.
</para>
<para>
At the moment, Ardour can export TOC and CUE files containing the
red-book related fields Track, Index, ISRC, SCMS and Preemphasis. The
CD-TEXT fields TITLE, COMPOSER, PERFORMER and disc title are also
supported.
</para>
<para>
Range markers in Ardour can be 'promoted' to become CD tracks in the
locations window. Marks (point markers) can be promoted to be CD
Indexes in the same window. All TOC/CUE export operations hinge on
this.
</para>
<para>
Assuming you have several songs on your timeline laid out so that
their spacing and level is 'correct' as you hear it, you should then
set ranges that represent the start and end points of each track,
These will become the start and end points on your CD. The start times
are all rounded down to the previous CD frame (Of which there are
75/second) on export, so if you want to hear the exact point that your
CD player will start from, select 'CD frames' as your snap setting
while you do this. If you want track indexes (nobody does, but they're
there), set a location marker for each desired index.
</para>
<para>
The locations dialog is useful here, as you can just 'go' to a point
to audition the exact position of a marker/range.
</para>
</section>
<section id="pregap">
<title> Pregap </title>
<para>
A word about pregap:
</para>
<para>
A 'normal' redbook CD should have a blank (digital black) space of 2
seconds before the first modulation called the pregap. Ideally, your
first song will have been placed at 2 seconds when you began, but you
can always drag the whole collection of songs to the right position
fairly easily at this point.
</para>
<para>
Also, note that this 2 second rule can be fun to break. You can make
the pregap as long as you like.. even hide whole songs in there. The
player will still play track one when the disc is inserted. Only those
listeners with the urge to rewind beyond the beginning will find your
hidden song/dog bark. Also keep in mind that there is a pregap for
each song. It starts where the previous song ends. In other words, if
you leave a gap in the ranges between songs 2 &amp; 3, that gap will
only play for those listening through the entire CD. Anyone skipping
directly to 3 will miss your secret 'long' intro.
</para>
<para>
After setting a non-overlapping range for each track (overlapping CD
tracks are removed on export, from left to right, as are indexes that
aren't inside a track), open the locations window and make your ranges
into track markers by clicking the CD button. Fill in whatever
information you feel is necessary in the boxes below. Unused fields
will be ignored as far as the exported TOC/CUE file is concerned.
</para>
<para>
CD-TEXT track titles are taken from the range's name. The CD-TEXT
title of the CD is taken from the session name (i should have told you
that first, right?).
</para>
<note>
<para>
Pre-emphasis is there for those strange types that use it (they also
use track indexes). You almost certainly don't want pre-emphasis. A
valid ISRC is all capitals, 12 characters.
</para>
</note>
</section>
<section id="cue-files">
<title> Cue Files </title>
<para>
Cue files have no notion of 'the end'. Its a drag. They think the end
of the file is the end of the last track. If you want to use CUE
files, you have to make sure that the session end marker is snapped to
CD frames (before you export, of course), or else use the -pad option
when you burn.
</para>
</section>
<section id="export-the-session">
<title> Export The Session </title>
<para>
Now export the session to a file (16bit 44.1kHz for CD), selecting
your preferred cuefile type (TOC or CUE). The TOC/CUE file is written
to the same directory as your audio file, and has the same name, only
with '.toc' or '.cue' appended. Usually you will only be selecting the
two master outputs to export, with output 1 always being 'left'. The
export is post fader and panner. Don't assume that the sound will be
identical after you have truncated/dithered to 16 bits. It can be
worthwhile to experiment with different dither settings when making
your export.
</para>
<para>
To check out the details without burning
</para>
<screen>
cdrdao show-toc blah.wav.toc
</screen>
<para>
to correct a problem, make your changes, then use the 'export toc file
only' option. If you have to change the session end marker, you'll
have to re-export your audio file.
</para>
<para>
To burn
</para>
<screen>
cdrdao write /home/britney/globalsmash.wav.toc
</screen>
<para>
One last thing:
</para>
<para>
If you don't make any CD Track ranges and export a TOC/CUE file, the
entire session is treated as one track with no pregap. Indexes, if
present, will be honoured.
</para>
</section>
<section id="ddp-support">
<title>FAQ </title>
<para>
Why no DDP? ( http://www.dcainc.com/products/ddp/ )
</para>
<para>
A: DCA have been kind enough to get in touch. Hopefully they will
allow a GPL implementaton soon.
</para>
</section>
<section id="catalog-numbers">
<title>What about catalog numbers for the CD?</title>
<para>
A: coming eventually.. we need a tab for session-wide variables like
these. where to put it? in the export dialog or the options menu?
</para>
</section>
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