Logic Pro/Express: Playback may unexpectedly stop in projects using DSP powered plug-ins

  • Last Modified: December 02, 2008
  • Article: TS2462

Symptoms

Logic may sometimes stop playback with a "Core Audio Overload" message. This may occur in projects that use DSP powered plug-ins such as UAD, TC PowerCore, SSL Duende, or Focusrite Liquid Mix.

Products Affected

Logic Express 8, Logic Pro 8, Third party hardware powered plug-ins

Resolution

For best results when using DSP powered plug-ins, set the I/O buffer in Logic to at least 512 samples.

  1. From the menu bar, choose Logic Pro (or Logic Express) > Preferences > Audio.
  2. Click the Devices tab.
  3. Click the Core Audio tab.
  4. Select the I/O Buffer Size pop-up menu and choose "512."
  5. Click Apply Changes.

Note: Raising the I/O buffer size will increase input latency. For detailed information on buffer size and latency see Logic: Learn about I/O buffer size and monitoring latency.

A good strategy for working with DSP powered plug-ins is to wait to use them until mixdown. You can track with a lower buffer setting in Logic and then increase the buffer size to 512 when you start to mix with the DSP powered plug-ins.

Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.

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