MetaSounds

MetaSound is the modern node-based audio graph that supersedes Sound Cue. Blueprint AI creates sources, patches, and presets, declares graph inputs and outputs, places node-class instances, wires their pins, and lays the graph out.

Note

Requires the MetaSound plugin (enabled by default in UE 5.7).

Creating sources & patches

Create a stereo MetaSound source called MS_Engine in /Game/Audio Create a MetaSound patch called MSP_Filter as a reusable subgraph Create a source preset MS_Engine_Idle wrapping MS_Engine

Authoring the graph

Node ids tie the steps together, and a trailing layout tidies the result.

In MS_Engine, add a graph input Frequency of type Float with default 440 Add a Sine oscillator node and an Audio Mixer node Wire the Frequency input into the oscillator and the oscillator output into the graph’s Out Mono Lay out the MS_Engine graph

Discovering nodes

The node palette is queried live, so results are always current.

Search MetaSound nodes for “biquad filter” Find MetaSound nodes with a Trigger output pin Describe the MetaSound node class UE / Sine / Audio

Tip

A preset wraps a referenced MetaSound and inherits its graph and inputs — the way to make a tweakable variant without copying the graph. Describe any MetaSound to see whether it is a preset and what its interface exposes.