In the film I am making I have a shot of a man on top of a roof with a very large speaker blasting music to the city. The only problem I have is, how am I going to make the song sound like its doing that? I'm not very skilled with this, I was thinking maybe id have to adjust the reverb or something?
Run midi lights on the scene to let the acting fake hearing the sound. In the mixing section use a separate audio track or two to record the effect of the following. Have your audio booth play the voice into a monitor speaker in another room next to a room with a taking microphone or two. The monitor speaker can be inside a huge partly open (= partly closed) cardboard box. Aluminum sheets hung nearby sometimes help the rattling noises. Be sure to add the proper outdoor wind noises. Forget reverb.