I've got a 32-track digital studio in my house, (built around a Korg D32-XD multi-track), and a ton of other gear like a Yamaha S90, Korg Motif, Boss DR-880, Aphex 230, Evantide Harmonizer, Lexicon MX300, Alesis DEQ230, Kawai K1R, Yamaha TX81-Z, Audio-Technica AT450, AKG K-701 Headphones, (best made), and a bunch of other stuff. I primarily use it for recording my own stuff for copyright/sale purposes, but do some production for other bands/artists as well, (I know you're in Maine, so if I can ever help out, let me know). I have a three-room set-up with separate sound booth, vocal booth, drum/percussion booth, and use professional foam baffling, which is great, but it's expensive for larger areas. If you want it for just a vocal-sized booth, you could do it fairly cheaply, and you can buy it at like Z-Zounds, AMS, Musician's Freind, etc. A friend of mine has a recording set-up as well and he uses
hanging baffling which might also be a great option for you, as you can hang them at the level of your mics, and it will still deflect like a whole room. Both he and I got all our sound-proofing suppiles here, as the prices are more wholesale, and they have the most options, (you should check it out):
http://www.soundproofcow.com/soundproofing-baffles/?gclid=CJWNgMyOv6ACFdlw5QodemYKTg&lcode=EA81268Now don't laugh, but when I was first starting out and couldn't afford the pro stuff, I used empty boxes of different sizes and attached them to the walls, coated them with this spray rubber particulate paint, and it was awesome. I've also had other musician friends who have used stacked boxes to surround them for vocal recording. I've seen suggestions here like mattresses, etc., which is OK, but the problem is room size, getting them to stand up, cost, and the fact that they don't baffle as well as an empty box because the sound is still carried through the substance of the mattress. Yeah, it may sound stupid, but the baffling/soundproofing I got with empty boxes was as good as the professional stuff I have now, (seriously), and it costs next-to-nothing. Also, you've got to use a double or triple-layer pop filter, it's essential equipment for any vocal recording. And if you want to invest in an amazing vocal processor, the
Aphex 230 does EVERYTHING ... it's the best vocal processing unit I've ever used and takes the place of just about everything else, (except an effects unit) ... check it out online sometime, (it's freaking awesome!):
http://www.aphex.com/230.htmHope this has helped ... if you ever want to visit my studio just let me know ... it's located in Gorham. Good luck with your project!