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70 Chapter 1 Using Logic
OPEN TL Import
Logic has the ability to import song contents using theOpenTL (Open Track List) file
format.
The OpenTL format is mainly used for data exchange with Tascam hard disk recorders,
such as the MX2424. It only supports the exchange of audio data (audio media and the
use of this audio media in a song)—MIDI and automation data will be ignored when
using the export functions.
To import an OpenTL file, choose File > Import. A file selector opens, which allows you
to choose OpenTL files. Note that if you choose the Open TL files option in the Open File
Type menu, only files with the “.TL” extension will be shown in the file selector. If the
first event in the imported song starts at a time greater than 1 hour, the following
dialog appears:
Set SMPTE start time of song so that events start at the same SMPTE time as they do in the
imported project?
Confirm it by pressing Set if you want the SMPTE start time of the song to be changed
accordingly, or Don’t set if the song’s SMPTE start time should not be changed.
Should the first audio part found by OpenTL import have a start time greater than zero
(less than zero is impossible), Logic will ask if you wish to: Set the start time of first
imported event to start of song? If you answer with Set, the first audio part imported will
be placed precisely at the song start position.
This solves the problem of the song on the Tascam machine starting at a large time
value, but less than 1 hour (such as 59 minutes). In this situation, the user can’t
immediately see the imported audio parts because they are usually imported beyond
the song’s end point (possibly even beyond the largest possible song end point,
depending on the song tempo).
Bouncing and POW-r Dithering
Logic provides you with the leading professional POW-r dither algorithm, designed for
the conversion of 24 bit recordings to 16 bit files—as required for CD burning, for
example. POW-r (Psychoacoustically Optimized Wordlength Reduction) is licensed from
the development team of the POW-r Consortium LLC.
POW-r dithering is applied when:
• bouncing audio files to disk
Bouncing can be performed directly in the Arrange (and other) windows by selecting
the File > Bounce menu option, which will launch the Bounce dialog. Bouncing can also
be initiated by clicking on the Bounce button found on Audio Output Objects (see
“Bounce” on page 204).