MOTU UltraLite User's Guide download pdf (Page 29)

SOFTWARE INSTALLATION

produce more delay; smaller buffers produce less.

For complete information about this setting, see

“Working with Host Audio Software” on page 51.

MIDI I/O ON WINDOWS

On Windows, the MOTU AVB installer provides a

USB MIDI driver for the UltraLite AVB. This driver

allows you to access the UltraLite AVB’s MIDI input

and output ports through its USB connection to

the computer. The ports are published in Windows

and are available to all MIDI software.

MIDI I/O SETUP ON THE MAC

Core MIDI is the “under-the-hood” component of

Mac OS X that handles MIDI services for MIDI

hardware and software. Core MIDI provides many

universal MIDI system management features,

including MIDI communication between your

UltraLite AVB interface and all Core MIDI

compatible software.

Audio MIDI Setup is a utility included with

Mac OS X that allows you to conﬁgure your

UltraLite AVB interface for use with all Core MIDI

compatible applications. Audio MIDI Setup

provides:

■ A “virtual” studio on your Mac that graphically

represents your MIDI hardware setup and that is

shared by all Core MIDI-compatible programs

■ A simple, intuitive list of your MIDI devices

whenever you need it in any Core MIDI-

compatible program

Launching Audio MIDI Setup

1 Make sure your UltraLite AVB interface is

connected (a USB connection is required) and

turned on.

2 Launch the Audio MIDI Setup utility.

This can usually be found in /Applications/

Utilities. If it has been moved, just search for Audio

MIDI Setup.

3 Conﬁrm that the MIDI interface is present in the

MIDI Devices tab (or window) in Audio MIDI

Setup. If the interface does not appear, or if it is

grayed out, check your cable connections and click

Rescan MIDI.

Connecting MIDI devices to the UltraLite AVB

Once your UltraLite AVB interface appears in

Audio MIDI Setup, you are ready to add devices,

indicate how they are connected, and identify

properties they may have for particular purposes.

This information is shared with all Core MIDI

compatible applications.

To add a device in Audio MIDI Setup:

1 Click Add Device.

2 Drag on its input and output arrows to draw

connections to the UltraLite AVB that match its

physical connection.

Figure 3-3: Connecting devices to the UltraLite AVB. In this example, a

controller keyboard is connected to the UltraLite AVB’s MIDI IN, and a

sound module is connected to the UltraLite AVB MIDI OUT.

3 Double-click the device to make settings, such

as input and output channels, that further describe

the device.

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MOTU UltraLite User's Guide Page 29

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