Time-lapse vocal recording booth builds
The original video I posted here back in 2009 is now gone. But I found a few more time-lapse videos of vocal booth builds that you might enjoy and learn from.
From Chad Edwards:
On this video from SkyAcreRandomEtc, you'll see that they decoupled their floor with rubber as one of the first steps (it goes by really fast):
RobScallion2 shows a time lapse of him building a prefab vocal booth. But if you're a voiceover artist and you just want to put it together like IKEA furniture...