I am currently working on a project for my church. It is a volunteer dvd project. They want to interview people in the Sanctuary, which is very large with tile floor and really high ceilings. I am just the DP for this project but the producer is worried about sound. Our sound person has some experience but for the most part is still learning. I was wondering if there is anything I can suggest to help dampen the sound from being so echoey. My gut tells me to put a carpet underneath them and maybe hang one or two in the direction they will be talking off screen. I am not a sound guy so if anyone can give any advice to this situation please let me know. Thanks in advance.