User guide

Chapter 4 Setting Up Your System 99
Configuring Your Audio Hardware
To use particular audio interfaces with Logic Express, the driver for the device needs to
be installed, activated, and configured correctly. Drivers are software programs that
enable various pieces of hardware and software to be used with Mac OS X. This allows
the device to be recognized by applications, such as Logic Express, and enables data
routing between software and hardware, in a format understood by both.
Selecting, activating, and configuring a particular audio driver in Logic Express is
achieved in the Audio Devices preferences.
To open the Audio Devices preferences, do one of the following:
m Choose Logic Express > Preferences > Audio (or use the Open Audio Preferences key
command), then click the Devices tab.
m Click the Preferences Toolbar button, choose Audio from the pop-up menu, then click
the Devices tab.
In Mac OS X, all audio devices are accessed via Core Audio, an integral part of the
operating system. Core Audio is a high-performance, low-latency audio system that
allows audio interface hardware to be used by several applications at the same time.
Logic Express is compatible with all audio hardware that offers a Core Audio driver.