This won't eliminate all ambient noise like a true sealed sound proof room, but when you can control or eliminate sound deflections that can reach your microphone, it takes your audio to another level. An excellent tool when doing voice over or narrative work to your videos. Here's another cool looking portable DIY sound booth for microphones. The walls break down using Eyelets and Hooks when not in use. [Thanks Joel]
$109 Auralex ... Box of 24 Studiofoam Wedgies (enough for audio walls, plus a back wall that I built to put behind speaker. Use Liquid Nails to glue the Wedgies to the particle board walls).
$10.75 1/4" 4x4 sheet of Particle Board @ Home Depot (probably need 2 sheets)
$1.18 Metal Eyes @ Home Depot (pack of 8)
$1.18 Metal Hooks @ Home Depot (pack of 4)
$2.29 2x2x8 Wood @ Home Depot (use for reinforcement on walls. The amount depends upon how much you want to reinforce, but you will definitely need these to anchor the Metal Hooks and Eyes for attaching the side walls to the back wall - and for the ceiling to prevent sagging)
Ceiling: 35" wide x 28" Deep (it simply sits on the two walls with a bit of overhang)
Side Walls: 24" tall x 28" Deep (walls connect to the back with the eye hooks
Back Wall: 24" tall x 36" long
Clip on Ikea desk lamp for $5.99 (see photo).
For the not-so-diyers there are a number of these Portable / Collapsible Traveling Sound Booths available on both eBay (click here) and on Amazon (click here).
Portable Sound Booth
Since we're on the topic of Audio capture, one of tips I remember came from an article about mobile Podcasting. This was when the iPod first came out years ago and there was a slew of audio podcasting stations (which I see now replaced with Video castings. So Podcasters who traveled the country often needed to setup a microphone and record themselves, sometimes in a hotel room which wasn't always the best place for clean audio. If you catch some of my random videos shot in the warehouse (even on Zoom H1) you'll hear a bit of reverb from the sound bouncing around on the walls.
So the tip that I was reading was that you don't necessarily need an extremely large sound booth to contain a whole person. That's mainly used to block out ambient noise. If you're in a fairly quiet spot and you want to minimize the reverb on the microphone you can just contain the microphone into it's own little sound booth. Anyways, I forget where that article was but Fred over at Tuperhero.com has a budget way of making a DIY portable sound booth to contain your microphone or portable audio recorder. With this positioned close to your subject and out of camera frame, it could help clean up the audio pickup from all that reverb and minimize some of the ambient noise from the sides and rear of the microphone pickup. [Thanks Fred]