Setting the Project Bit Depth

You should set the required bit depth when starting a project. The bit depth is the number of digital bits each sample contains. Recording at a bit depth of 24 bits is recommended for most situations and is the default setting in Logic Express.

If you have suitable audio hardware, 24-bit recordings offer a significant improvement in the available dynamic range. 24-bit files use one and a half times the disk space of comparable 16-bit files.

To turn on or off 24-bit recording
  1. Open Audio preferences by doing one of the following:

    • Choose Logic Express > Preferences > Audio (or use the Open Audio Preferences key command).

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

  2. Click the Devices tab, then click the Core Audio tab.

  3. Turn on or off the 24 Bit Recording option.

Figure. 24 Bit Recording checkbox in the Core Audio pane in the Devices preferences.