Apple Logic Pro 8 - Manual (Page 938)

938 Chapter 39 Working in the Environment
Input Channel
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.
It is primarily included for compatibility with older Logic Pro versions, 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 is
assigned to an audio channel, it can be monitored and recorded directly into Logic Pro,
along with its effect plug-ins.
The signal is processed—inclusive of plug-ins even while Logic Pro is stopped. In other
words: Input channels can behave just like external hardware processors. Aux sends
can be used pre or post-fader.
Input channels 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).
Note: An alternative to using input channels in this way is the use of the I/O plug-in, or
simply click the Input Monitoring button on an audio channel strip (and choose the
input(s) you want to monitor—or record—via the Input slot).
Bus Channel
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.
It is primarily included for compatibility with older Logic Pro versions, and for use with
certain audio hardware devices.
Note: File > Project Settings > Audio > Automatic Management of Channel Strip
Objects must be deactivated if you want to create Input channel strips (it is on, by
default).
Prelisten Channel Strip
The Environment’s Prelisten audio channel strip is used for monitoring in the Sample
Editor, Audio Bin, Loop Browser, and Browser. It is created automatically in each
project—you can find it to the right of the highest numbered audio channel strip.