Apple Logic (1.1) - Manual (Page 85)

Chapter 8 The Environment Concept 85
• You can insert Objects between the Physical Input Object and the Sequencer Input
Object, alter the MIDI data and record the results (as shown by the note transposition
and velocity increase in the example above).
• You can also deactivate Logic’s MIDI input completely (although you’ll want to avoid
this): If you cut the connection between the Physical Input and the Sequencer Input
Object (by clicking on a cable and pressing Backspace, for example) you will not be
able to receive and record MIDI data with the sequencer.
Note: You can quickly check if Logic is receiving data by playing a few notes on your
MIDI keyboard while looking at the small MIDI Activity display in the Transport Bar.
Cutting the Sequencer Input connection:
1 Select the cable running from the second Monitor Object into the Sequencer Input
(named to recording & MIDI Thru) by clicking on it, and pressing Backspace. Ensure that
no other Object is selected/highlighted.
2 Play your MIDI keyboard, and you’ll see that the onscreen Keyboard and Monitor
Objects continue to display the incoming data, but the MIDI Activity display in the
Transport Bar will indicate no data reception.
To make the shortest possible connection between the Physical Input Object
and the Sequencer Input Object:
1 Click-hold on the small triangle at the top right of the Physical Input Object. As you
move the mouse cursor, you’ll note an onscreen cable.
2 Move the cable’s “plug” (at the mouse cursor position) over the Sequencer Input Object
until it is highlighted/selected, and release the mouse button. This replaces the old
connection (broken in the previous exercise) with a new one.
3 Play a few notes on your MIDI keyboard. You’ll note that the onscreen Keyboard and
Monitor Objects do not display the incoming data, but the MIDI Activity display in the
Transport Bar does indicate data reception.
External Control
If you have connected a MIDI device such as a MIDI keyboard or sound module to your
computer, you can use the Environment to control this MIDI instrument from Logic.
The following example shows you how to control an external, mono timbral
MIDI instrument from Logic:
1 Select a new, blank layer from the Layers menu by selecting the **Create** entry.
2 Select New > Instrument from the Environment’s local menu. A new Instrument Object
is created. The Instrument Object transmits data on a single MIDI channel, making it
perfect for connecting an external mono-timbral instrument.
3 Click the Instrument’s Name field in the Object Parameters box. Type the name of the
MIDI device that this Instrument Object represents.