I knew that there were some latency issues with LE systems, and sure enough, when we came to the first overdub there were problems. With the 002 and 002R, Pro Tools LE offers a special Low Latency Monitoring mode. The amount of time that this takes is in part controlled by the buffer size, which you can set yourself. This is because the computer needs time in order to process the audio, and then route it back out of your interface. When you are recording audio with your interface, you might notice a slight delay in the audio coming back to you. With us flying out, taking my HD system was not a practical solution, but I have an 002R with a Focusrite Octopre in a 3U soft case, and together with some other bits and pieces loaded into my suitcase, I just got it within the 32kg single item limit. Often, these are used for broadcast production, and latency issues don't usually rear their ugly heads when using Pro Tools in this way, but recently I was asked by one of my clients to fly out to Northern Ireland to track and overdub some music tracks in a studio overlooking Carlingford Lough near Newry. However, I also do a lot of work on LE systems as these are what many of my clients have.
When working on music projects I normally use my main Pro Tools system, which is an HD2 Accel system with a 192 I/O interface. So what's the best way to deal with this problem if you have only an LE system? One of the best features of TDM-based Pro Tools systems is the negligible latency, or input-to-output delay, while recording.
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