http://voiceoveressentials.com
This video demonstrates the difference in sound quality using the Port-Booth Pro portable sound studio as compared to not using it. Note that you can hear more of the room ambiance in the first clip Without the Porta-Booth Pro. The second clip With the Porta-Booth Pro deadens it. The room this was recorded in is already a fairly dead room "with a bit of over stuffed furniture" as Jeff says. The results using a "livelier" room are even more dramatic.
Sounds convincing enough! I'm buying one tmr!
Gunbardo 2 months ago