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USB Safety Buffer Explained

The USB Safety Buffer is a setting within Console that can be useful for alleviating issues such as pops, clicks, or beeps in audio playback on your Apollo Twin USB. If you are experiencing these kinds of issues then raising the USB Safety Buffer on your system may help. 

Before changing the USB Safety Buffer, we highly recommend that you configure your Windows system for use with your Apollo Twin USB by following the directions in the articles below:

Windows Setup Required Settings

Windows Optimization Recommended Settings

Troubleshooting Pops, Clicks, and Beeps on Apollo Twin USB 
 

If you’ve fully optimized your system but are still experiencing artifacts in audio playback, then raising the USB Safety Buffer setting may improve audio performance on your system.

To locate the USB Safety Buffer setting:

  • Open Console
  • Click on Settings (bottom left)
  • Open the Hardware tab
2017-05-18_15_48_48-Console_Settings.png

 

The default setting is "Minimum". Start by selecting "Small" and testing audio playback again. If pops, clicks, or beeps are still present then try the "Medium" setting and test again. Repeat until you find the lowest setting that allows for clear playback on your system. 

Important:
Stop WDM and ASIO playback before changing the USB Safety Buffer. Applications using audio may need to be relaunched after the setting is changed.

Note: Raising the USB Safety Buffer will add a small amount of latency to playback (Console input monitoring is not affected). Additionally, certain I/O buffer sizes will not be available depending on the hardware sample rate. Therefore, it is recommended to use the lowest setting possible. A chart that fully describes the available buffer sizes and latency times can be found in the Apollo Twin USB Software Manual, available here.

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