Unreal Audio DSP Template (UE5)

[Current main branch version: UE5.5, for other versions check repo branches]

A simple Unreal 5 plugin with demo content that shows how audio DSP processing can be done implementing a Metasound Node, SourceEffect and SubmixEffect.

A volume effect with its amplitude parameter is used to demonstrate how to do basic DSP processing.

The intention of this project is to use it as a start point to create more complex audio DSP effects.

The most relevant parts of the code are located in:

• Plugins/AudioDSPTemplate/Source/AudioDSPTemplate/Private
• Plugins/AudioDSPTemplate/Source/AudioDSPTemplate/Public

Build steps

• Clone repository
• Right click UEAudioDSPTemplate.uproject > Generate Visual Studio projects files
• Open UEAudioDSPTemplate.sln
• Build Solution

Testing the plugin

• Open UEAudioDSPTemplate.uproject (or start it from Visual Studio)
• DemoMap will be automatically loaded
• Metasound:
  • Open VolumeNode_Metasound asset
  • Click Play button to start the Metasound
• SourceEffect and SubmixEffect:
  • Go to Blueprints > Open Level Blueprint
  • You will see that there is Blueprint logic to trigger a sound at the Sphere location and a Timeline that will drive the Amplitude parameter of the SourceEffect
  • If you want to test the Submix effect simply connect the Update port from Timeline to the Set Settings node of the SubmixEffect
  • Click Play button to start the Level

Note for Metasounds:

• If you plan to create new Metasound nodes in your own project don't forget to call FMetasoundFrontendRegistryContainer::Get()->RegisterPendingNodes(); in the StartupModule() method, check AudioDSPTemplate.cpp for more details.

Showcase

Metasound:

SourceEffect and SubmixEffect: