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.

You select, activate, and configure a particular audio driver in Logic Express in the Audio Devices preferences.

To open the Audio Devices preferences
Do one of the following:
  • Choose Logic Express > Preferences > Audio (or use the Open Audio Preferences key command), then click the Devices tab.

  • Click the Preferences button in the Arrange toolbar, choose Audio from the pop-up menu, then click the Devices tab.

Figure. Core Audio tab in the Audio Devices preferences pane.

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.

Setting Up Core Audio Devices

Logic Express automatically recognizes any installed Core Audio hardware, and uses the default settings as defined in the Audio MIDI Setup utility (Applications/Utilities/Audio MIDI Setup). It can, however, be advantageous to optimize the settings for your individual hardware setup, particularly if you use several audio interfaces or a multiple input/output device. If possible, you should avoid using different audio devices for input and output.

For details about setting up your Core Audio device preferences (in the Logic Express > Preferences > Audio > Core Audio pane), see Core Audio Device Preferences.