Apple Logic Pro X - Manual (Page 830)

Chapter 23 Work in the Environment 830
Input channel strip
You can only create input channel strip objects in the Environment. In general, you will not need
to do so, as all audio hardware inputs are automatically seen by audio channel strips, and can be
monitored and recorded.
Input channel strips are primarily included for compatibility with earlier versions of Logic Pro,
and for use with certain audio hardware devices. The input channel strip allows you to directly
route and control signals from your audio hardware’s inputs. Once an input channel strip is
assigned to an audio channel strip, it can be monitored and recorded directly into Logic Pro,
along with its effects plug-ins.
The signal is processed, inclusive of plug-ins, even while Logic Pro is not in playback mode. In
other words, input channel strips can behave just like external hardware processors. Aux sends
can be used pre or post fader.
Input channel strips can be used as live inputs that can stream audio signals from external
sources (such as MIDI synthesizers and sound modules) into a stereo mix (by bouncing an output
channel strip).
Note: An alternative to using input channel strips in this way is the use of the I/O plug-in; you
can also click the Input Monitoring button on an audio channel strip and choose the input or
inputs you want to monitor or record via the Input slot.
Bus channel strip
You can only create bus channel strip objects in the Environment. In general, you will not need to
do so, as all audio bussing (send/return routing via the Send slots of channel strips) is handled by
aux channel strips.
Bus channel strips are primarily included for compatibility with earlier versions of Logic Pro, and
for use with certain audio hardware devices.
Note: File > Project Settings > Audio > Automatic Management of Channel Strip Objects must
be unselected if you want to create input channel strips. (It’s on by default.)
Prelisten channel strip
The Environment’s Prelisten channel strip is used for monitoring in the Project Audio Browser
and in the Audio File Editor. It’s created automatically in each project—you can find it to the
right of the highest-numbered audio channel strip.