Apple Logic Pro 9 - Manual (Page 295)

To activate or deactivate the Low Latency Safe function for a particular send
µ
Click-hold the appropriate Send slot, then choose Low Latency Safe from the menu.
Note that the signal path of the send signal (beyond the send) is not subject to low latency
processing, and will be delayed in accordance with the current plug-in latency
compensation setting. Given this behavior, use of the Low Latency Safe setting on sends
routed to effects such as distortion, modulation, or rhythmic delays is not ideal. It may,
however, be of particular use for reverbs—especially in cases where the current plug-in
compensation delay time falls within the range of a reverb’s pre-delay time.
When Low Latency mode is activated, it’s easy to recognize whether a send is switched
to Low Latency Safe mode or not.
• Sends that are low latency safe remain blue or green.
• Sends that are not low latency safe turn orange.
Working with Instruments
This section describes the use of software instruments and external MIDI sound generators.
Both software and external MIDI instrument tracks are handled in an almost identical
fashion. In fact, the MIDI regions on tracks routed to either type of channel strip (software
instrument or External MIDI) can be used interchangeably.
You can also completely reassign a track routed to an external MIDI synthesizer to one
using software instruments, or copy the data of an external MIDI track to a software
instrument track, resulting in layered playback of the part through both instruments.
Software instruments use instrument channel strips. MIDI instruments use External MIDI
channel strips.
ReWire instruments are handled through auxiliary channel strips. The setup and use of
ReWire instruments is described in
Working with ReWire Applications .
295 Chapter 10 Working with Instruments and Effects