Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed in the 2019.2.9.7459.1876 release of the integration (in addition to upgrading to the new Unreal build).

Note: This integration does not support experimental Unreal Engine 4 features.

Note: This integration compiles against Unreal Engine versions 4.23 and up, but was only tested against Unreal Engine 4.25.

Platform-specific information can be found here:

For earlier versions, please refer to Previous Release Notes.

• Behavior Changes
• Bug Fixes
• Fixes for Community-Reported Bugs

Behavior Changes

• WG-51199 Moved Auto Connnect to WAAPI and Auto Enable Automatic Asset Synchronization to the user-specific Wwise settings.

Bug Fixes

• WG-47326 Fixed: In the Spatial Audio tutorials, the low pass filter on the distance attenuation of the dialogue sound is too intense.
• WG-51371 Fixed: Cannot rename SoundBank assets in UE4 Editor.
• WG-52226 Fixed: Spatial Audio crash when AkGeometry retrieves invalid data from mesh.
• WG-52494 Fixed: Erroneous XML parsing when modifying the Wwise project on Editor startup.
• WG-52529 Fixed: It's not possible to play device-specific compressed audio.
• WG-52595 Fixed: Crash when an AkComponent is destroyed before an associated delegate callback is run on the game thread.
• WG-52611 Fixed: New Wwise Objects are not created on the Unreal side when discovered through the GenerateSoundBanks commandlet.
• WG-52624 Fixed: Errors during WwiseConsole Sound Data generation are reported, but generated data is still parsed and saved into assets.
• WG-52762 Fixed: Some virtual memory is leaking due to incorrect AkMemFreeVM implementation.
• WG-52877 Fixed: Errors parsing Work Units are not reported and cause valid assets to be scheduled for deletion.

Fixes for Community-Reported Bugs

• WG-51695 Fixed: Modifications to nested Work Units don't appear in the Wwise Picker.
• WG-52245 Fixed: Changes to the Wwise project structure made in the Unreal Editor are not always reflected in Wwise Authoring.