User guide

Chapter 38 Working in the Environment 933
Internal Objects
Internal objects include instruments located inside your Macintosh (such as software
synthesizers and other musical applications). Although communication with sound
sources inside the computer does not actually use MIDI, it still conforms to the MIDI
communication protocol.
Internal objects have an input, but no output. They therefore act like extra output
ports, which are hard-wired to the relevant sound generator (software instrument or
application).
Apple QuickTime
The QuickTime system extension offers a software-based GM sound generator. The
QuickTime Musical Instruments file must be present on your system.
To create a virtual representation of the QuickTime synth:
m Choose New > Internal > Apple QuickTime.
This software synth is 16-part multi-timbral. As usual, you can switch sounds via
program changes; these are arranged according the GM table. Channel 10 is always set
to drum sounds, with GM key assignments. The QuickTime synthesizer reacts to notes
and program change commands, as well as to pitch bend (±2 semitones) and the main
volume controller (#7).
The first note is used to initialize the relevant MIDI channel of the QuickTime
synthesizer, and is not played.
ReWire
You can use ReWire objects to send MIDI data to ReWire compatible applications and
their software instruments. To connect to a ReWire compatible software instrument,
first open Logic Express and then the ReWire application. When shutting down, first
quit the ReWire application, then Logic Express.
You can use the Library to create ReWire objects automatically (see Chapter , “Working
With ReWire Applications,” on page 260).
To manually create a ReWire object in the Environment:
m Choose New > Internal > ReWire.