Trying to create code for a in game directional microphone (Similar to the "Find Ames" mission in Metal Gear Solid 2)

So yeah title says it all, currently I’ve achieved using a line trace to hit an object I’ve set up as an Actor BP that plays an audio cue in world to adjust it’s attenuation and increase the volume, what I’m trying to add/ change is so the effect lasts only while holding down the input, then stops when let go, as opposed to how the line trace works and just leaves the effect on for the duration of the line trace hitting it.
The next thing I’m trying to accomplish is to have a reverb effect on the sound and possibly like a low pass filter so it’s like a hot microphone recording audio, the problem I’m having though is it seems that reverb and effects can only be achieved through an audio volume, which doesn’t work for me in this instance, as I’m trying to make it so the microphone picks up a specific object or area it’s pointed at. For instance in this example, The goal is to have animals walking around the level, making foot step noises, or other noises and when the microphone is pointed in that direction, that’s what it picks up. I don’t mind of the ambient noises are picked up as well as that would be more realistic, but the animal noises should be louder.

So how could I achieve this? It’s so odd that sound cues don’t have their own reverb and effect settings, I’ve seen some reverb options in the sound cues but after cranking all those settings up very high I haven’t heard any noticeable difference.