Thanks for the advice so far on the vocal booth insulation... it's now built... and it works... It's in a room next to a main road, and the mic doesn't pick up any of the traffic noise, so success
The next thing I need to do is make the booth sound less 'echoey' (or 'anechoic' as I've just discovered). I realise I need to purchase some acoustic panels/foam, but once again as I have no knowledge in this area I don't even know where to start. I've visited the Auralex website, done basic google searches, but can't really interpret the results. So I'd appreciate any help.
I guess I have two questions.
1. What type of material would be best to make the vocal booth anechoic?
2. Do I need to line the whole of the booth with this material?
About the booth:
The internal dimensions are 1.1m x 1.2m x 2m, the booth will be used exclusively for voiceover work.
Thanks for any replies
Ben