I'm new here, I hope I posted this in the right place

I'm working on a project in witch I want people to talk in a microphone and that a certain clip is being played, depending on how loud the person is talking.
I'm now working in Arena 5 where I have linked the opacity to the external audio. There I can set the gain, but I can't limit it (like how you can with the frequency). For instance I can't link clip1 to 0-20db and clip2 to 20-50db etc.
Do one of you have a suggestion?