Using Existing Audio
There are two primary ways to bring data into Ardour: recording it
within a session from a live sound source or importing pre-existing
audio files. This section covers the various ways to import audio into a
session.
Importing and Embedding
Importing and embedding are two different methods of using existing
audio files on your computer (or network file system) within a
session. They differ in one key respect:
Importing
An existing audio file is copied to the session's sounds folder,
and is converted into the session's native format (WAVE or
Broadcast WAVE depending on your choice) and sample rate.
Embedding
An existing audio file is used as a the source for a region, but
is not copied or modified in any way.
Supported External Audio File Formats
The list of audio file formats that Ardour can import/embed is quite
long. It is based on the functionality offered by libsndfile, an
excellent and widely used software library by Australian programmer
Erik de Castro Lopo. As libsndfile's capabilities expand, so will
Ardour's abilities to import (and export) new formats. Ogg/Vorbis (an
excellent, unpatented and license free audio compression format
similar to MP3) is planned for the near future. Currently, supported
formats include:
Microsoft WAV
SGI/Apple AIFF/AIFC
Sun AU/Snd
Raw (headerless)
Paris Audio File (PAF)
Commodore IFF/SVX
Sphere/NIST WAV
IRCAM SF
Creative VOC
SoundForge W64
GNU Octave MAT4.4
Portable Voice Format
Fasttracker 2 XI
HMM Tool Kit HTK
Sample encodings supported include:
Unsigned and signed 8, 16, 24 and 32 bit PCM
IEEE 32 and 64 floating point
U-LAW
A-LAW
IMA ADPCM
MS ADPCM
GSM 6.10
G721/723 ADPCM
12/16/24 bit DWVW
OK Dialogic ADPCM
8/16 DPCM
Using audio files as tracks or regions?
When you want to use existing audio files in an Ardour session, the
first choice you need to make is whether you want to bring the files
in as tracks or as new regions. Consider the two following scenarios:
you have an 8 track recording of existing material, with 1 audio
file per track
you have a sample library containing 500 small audio files
In the first case, your goal is probably to have 8 tracks (at least),
with each track containing a single audio file. In the second case,
its a lot more likely that you simply want to be able to use any of
the samples easily, but do not want any tracks created as a direct
result of the import/embed. It is very important that you understand
this distinction: many new users think there should be a "simple" way
to import existing audio without understanding that the goal of
importing/embedding is not always the same.
Ardour provides two different options when importing. You can
import/embed audio files as new tracks, or you can import/embed them
into the region list, where they will be available as regions to put
into new or existing tracks. You can also insert import/embed audio
files directly into an existing track.
How to import an audio file as a new track
Click on the Edit item in the editor's menu
bar. From the popup menu that appears, choose Import...as new tracks. The Audio Library/File Chooser window will appear.
After you have made your selection of files to import, click the
button at the bottom of that window (it will say something like
"Import selected regions as new tracks").
How to embed an audio file as a new track Drag-n-Drop
If you use a file manager such as Nautilus or Konqueror ((basically,
any tool that uses standard "list-of-URL's" encoding for
drag-n-drop)), the simplest method to import files as tracks is to
drag-n-drop. Select the files you want to embed in the file manager,
drag the selection into Ardour and drop it over an area of the
editor's track/arrange display where there are no tracks. The files
will be embedded as 1 new track per file.
Edit menu
Click on the Edit item in the editor's
menu bar. From the popup menu that appears, choose Embed...as new tracks. The Audio Library/File Chooser window will appear.
After you have made your selection of files to embed, click the
button at the bottom of that window (it will say something like
"Embed selected regions as new tracks"). 1 new track will be created
for each file.
Importing as a new region Embedding as a new region Drag-n-Drop Region List Menu How to import/embed
Begin by clicking on the titlebar of the region list in the editor
window. Select Import from the menu that
appears, and the Sound File Database will be displayed. See sfdb for
more details on using this dialog.
Once you have found and selected the files you want to import, click
the "Import Selected" button on the SFDB dialog. Each selected audio
file will be copied into the session's sounds folder, converted into
the session's native format and sample rate. One or more new regions
will be placed in the "External" section of the region list, either
one per channel of each file or, if "create multichannel regions" was
selected in the SFBD dialog, one per file.
If you use Nautilus as your file manager, you can easily import files
into your project by dragging them onto the desired track, then
releasing the mouse button. The file will then be
embedded into your session.
At this time, no control over the conversion process is offered. If
sample rate conversion is required, it will be carried out at the
highest quality that Ardour can provide. This means that it can be
rather slow (many minutes to import an audio file lasting a few
minutes).
How to embed a file
There are two pathways for embedding an audio file into a session. One
is initiated from the region list, and simply creates one or more new
regions. The other is initiated from a specific track, and not only
adds regions to the region list, but also inserts them into the
track's playlist.
Embedding via the region list
click with 1 on the region list title bar.
Select Import audio file from the menu that appears.
The SFDB dialog appears.
Select the files you want to import
then click on the Embed Selected button.
New regions are added to the External section of the region list.
Embedding from a track
in the track you want to add the audiofile to.The track context
menu will appear.
Select EditInsert external sndfile from this menu. The SFDB
dialog appears.
Select the files you want to import
then click on the Embed Selected button.
New regions are added to the "External" section of the region list,
and one is inserted into the track from which the embed was started.