Apple Logic Express 7 - Manual (Page 180)

180 Chapter 5 The Environment
• Playback mode: use this mode when playing back MIDI tracks via ReWire. This setting
requires less CPU power.
• Live mode: use this mode when playing a ReWire instrument live. This setting
requires more CPU power.
MIDI Outs
Port Objects represent the MIDI output(s) of your MIDI interface(s). You can also use
them to address the internal synth on your soundcard (if applicable).
To create a port Object choose New > MIDI Out Port.
The lowest line in the Parameter box sets the MIDI output driver for the port Object.
The signals from all MIDI cables plugged into this Object will then be sent via the
selected MIDI output.
Remember that you can also address any MIDI output port directly from instrument
Objects (and the GM Mixer Object).
Faders
Faders (see “Faders—Overview” on page 181) are used to send MIDI events by clicking
or click-dragging on them. Faders come in different forms (knobs, sliders, numerical,
and buttons). Fader Objects respond to incoming MIDI events.
Audio Objects
The Environment’s audio Object (see “Audio Objects in the Audio and Track Mixer” on
page 194) is the “building block” of the Environment Audio Mixer. They are also used to
create audio tracks in the Arrange window—audio tracks are simply tracks with Audio
Objects assigned to them.
Although audio Objects are not part of the MIDI signal flow, they still allow MIDI
controller messages to control aspects of Logic’s audio playback. Any MIDI Object can
be cabled into an audio Object, thereby feeding control data into the audio Object.