Apple Logic Express 8 - Manual (Page 869)

Chapter 36 Working With Plug-in Latencies 869
For these same reasons, you may encounter increased latency if playing software
instrument tracks live, when plug-in delay compensation is set to All. This issue can be
mitigated to some extent by using the Low Latency mode (see “
Working With the Low
Latency Mode ” on page 866).
Dealing With Latency Issues
To avoid these potential pitfalls, you should try to complete any audio and software
instrument recording before inserting latency-inducing plug-ins. If you need to record
a software instrument or audio track after setting up a latency-inducing signal routing,
the following procedure will help you to get around any possible problems.
To record after setting up a latency-inducing signal routing:
1 Switch the plug-in delay compensation setting from All to Audio and Software
Instrument Tracks in the Logic Express > Preferences > Audio > General tab.
You can also use the Toggle Plug-in Delay Compensation: All/Audio and Instrument
Tracks key command to quickly switch compensation between All or only Audio and
Software Instrument Tracks.
The Audio and Software Instrument Tracks plug-in delay compensation method shifts
tracks that contain latency-inducing plug-ins forward in time—so any audio and
instrument tracks that contain such plug-ins will be synchronized with non-delayed
tracks. There is only one exception: Live tracks can not be shifted forward in time.
The next step is to eliminate any latency introduced by plug-ins in your recording track.
2 Bypass any latency-inducing plug-ins on the recording track by Option-clicking on the
respective Insert slots.
In the Audio and Software Instrument Tracks plug-in delay compensation mode,
bypassing plug-ins eliminates the latency that they create. Latency caused by plug-ins
in audio and software instrument tracks is compensated for.
The last thing to do is to get around the latency introduced by plug-ins on aux and
output channels.
3 Bypass any latency-inducing plug-ins on auxes and outputs.
At this point, all audio streams will be synchronized, allowing you to proceed with your
recording.
When you’ve finished recording, re-enable all latency-inducing plug-ins, and switch the
delay compensation setting to All.
Note: In the All mode, bypassing plug-ins on busses, auxes, and outputs will not
eliminate the latency that they create. You must actually remove these plug-ins from
the Insert slots to eliminate latency.