Audio reflections?

I want my audio to bounce off certain objects and where is the best place for me to start? I also seen a plugin but can’t remember that plugins name. Would be cool if I could play with early reflections.
If anybody could point me in a good direction I would be grateful.

Thank You!

You want: Steam Audio Unreal Engine 4 Plugin for physically based sound rendering.

There are audio volumes Audio Volume Reference | Unreal Engine Documentation which will give the illusion of audio bouncing (reverb settings) but this is a cheat for older style audio.

So it was steam audio. Thank you!!