How to avoid crackles and audio dropouts

  • Live Versions: 8 - 9
  • Operating System: All

If the strain on your computer is too much, or the audio buffer is set too low, then this may result in crackles, dropouts (gaps in playback) or glitches. 

In this troubleshooting guide we'll cover the most common reasons for these audio issues and how to resolve them:

Update Everything

Firstly, make sure that everything is completely up to date: 

  • Update Live
  • Update Max for Live
  • Update your Audio interface drivers and firmware
  • Update all Plug-ins and Max for Live devices
  • Update the operating system

Adjust the Audio Buffer and Sample Rate

Audio buffering ensures audio can be played back while minimising glitches or dropouts. In order to ensure perfect playback:

  1. Open Live's Preferences → Audio
  2. Raise the buffer size. The more complex and CPU intensive a set is, the higher the buffer size will need to be. Find the sweet spot just above where the crackles and audio dropouts stop
  3. Always use a value expressed in powers of two, 32, 64, 128, 256, 512, 1024
  4. Reduce the sample rate to 44,100 samples

Bear in mind that larger buffer sizes will also increase the audio latency.

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Note: Many ASIO audio interfaces only allow the buffer size to be changed via their own control panels.

Check the Audio Interface

  1. Make sure that the audio interface drivers and firmware are completely up to date
  2. Older interfaces may not have drivers available for your current operating system. If the interface has been discontinued then you'll need to consider upgrading it
    On some new Macs and PCs USB 3.0 ports are installed. Make sure that your audio interface is compatible with this protocol
  3. If in doubt, test using the computer's built in soundcard instead

Audio Driver Type (Windows)

  1. For best performance we recommend using ASIO rather than MME/Direct X as the driver type
  2. If there is no native ASIO driver available for your interface, you can use ASIO4ALL

Cables, adaptors and hubs

  1. If using an audio interface which is connected via USB, Firewire or Thunderbolt, these cables or adaptors can easily cause crackles and dropouts if they have become damaged or are improperly inserted. Check the connections and replace the cables/adaptors if necessary.
  2. Connect directly to the computer and not via a hub
  3. Also check the computer's USB port to make sure it's free of dust and lint.

Reset Driver Error Compensation

Driver error compensation set to extreme amounts may cause audio issues. Check our dedicated article on Driver Error Compensation.

Check how powerful the computer is

Underperforming computers may not be able to handle audio processing efficiently and this will increase the likelihood of audio crackles and dropouts. The Live 9 minimum system requirements list the absolute minimum specifications required for Live to function. It's likely though that if your computer satisfies just these minimum requirements and no more, then the performance of Live may diminish depending on how complex your required usage is. For pro audio usage, the more powerful your computer, the better. Check out our guide on which computer to buy.

Reduce the CPU load

If the value indicated in Live's CPU meter gets close to 100 percent, the audio processing is being maxed out and it’s likely that you will hear gaps, clicks or other audio problems. It's possible for spikes in the CPU meter which aren't even close to 100% to sometimes result in audio glitches and dropouts.

Please read our dedicated article on managing the CPU load in Live.

Plug-ins and Max for Live Devices

Certain third party plug-ins and Max for Live devices can increase the CPU load, therefore exerting more stress on your system and potentially cause crackles and dropouts.

  1. Freeze CPU intensive plugins and devices
  2. You may also need to raise the audio buffer size temporarily for very intensive sets

Complex and Complex Pro Warping

Use Complex and Complex Pro sparingly as these are the most CPU intensive warp modes. Also ensure to turn off warping in Simpler if not necessary.

Close all other programs

Open Activity Monitor (Mac)/ Resource Manager (Windows) and switch to Processes to see how much of the CPU is currently being used by active programs. Close any that are using up too much of the CPU resources.

Turn off Wi-Fi, Bluetooth and Webcam

For best performance turn off Wi-Fi, Bluetooth and disable the Webcam.

Minimize Hard Disk Overload

If the hard disk cannot read or write audio quickly enough, you may hear dropouts. In this case you will be able to observe the Disk Overload indicator turn orange. This is more likely to occur if triggering multiple large audio files at once.

disk_overload_indicator.png

To avoid disk overload do the following:

Enable RAM mode for selected clips. This loads the sample into RAM rather than streaming directly from the hard disk. Be careful however not to load too many clips into RAM as you may exceed your allotted memory. We recommend using the 64-bit version of Live to utilise more than 4GB of RAM. More info: 32-bit vs 64-bit FAQ

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RAM mode is also available as an option when using Multisample libraries in Sampler.

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Try lowering sample rates (recommended: 44100 Hz) .

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Try recording audio with a 24-bit resolution instead of 32-bit. This setting can be found under Preferences → Record/Warp/Launch

Screen_Shot_2017-06-13_at_16.37.26.png

Try bouncing stereo tracks to mono, or bouncing some tracks together in order to lessen the load on the hard disk.

Please refer to Live's manual, Chapter 32.2 for more tips on how to manage the Disk Load.

Disable CPU Throttling (Windows)

If you find that disabling Multicore Support in Live's preferences improves the audio issues then your computer may be throttling the CPU.

Certain computers enable CPU throttling which is used to slow down the computer whenever possible to use less energy and conserve battery. However this setting may adversely affect the performance of the computer, especially when performing intensive tasks like audio processing causing crackles and audio dropouts. In order to adjust this, see our dedicated article on how to disable CPU throttling on Windows.

Further Troubleshooting (Windows)

In case you're still experiencing issues with audio dropouts, please see our guide to optimizing Windows for audio.