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March 23, 2012 • Alcorn McBride ProTraXX User’s Manual • Rev 1.4
Playback
Interruptible versus Uninterruptible Operation
In a play command, you can specify uninterruptible playback, meaning that
repeated play requests will not cause the sound to start over from the
beginning while playing. An example of where this might be used is in a
museum kiosk, where a guest trips a break-beam sensor to start an audio
presentation. The audio will continue playing through, even though the
guest might continually trip the sensor while listening to the presentation.
If not specified otherwise in the play command, files play as interruptible,
meaning that repeated play requests during playback will cause the sound to
start over. An example of where this might be used is in a shooting gallery,
where you want the sound to be heard every time a gun’s trigger is pulled.
See the Command Protocol section for details on how to specify interruptible
vs. uninterruptible mode in your commands.
Stereo versus Mono MP3 Playback
ProTraXX is capable of up to 16 independent mono channels, but can also
be used to play stereo MP3 files. When specifying playback of a stereo
MP3 in a command, play the file to a channel pair (P1-P8) rather than an
individual channel (C1-C16). ProTraXX will automatically send the left
channel of the MP3 to the odd channel in the pair, and the right channel to
the even channel in the pair.
For example, sending command “myMonoFile.mp3”1C2PL would play the
MP3 file to the Channel 2 output. The command “myStereoFile”P2PL
would play to channel pair #2, containing channels 3 and 4, perfect for
stereo files.
More details can be found in the
Command Protocol
section of this manual.
