One of the more difficult audio problems to deal when we edit and enhance podcast is “that hollow sound” as customers refer to it. They’re talking about the sound of their voice bouncing off of nearby walls, floors and ceilings.
Unless you deal with the problem, the hollow sound is going to remain in your podcasts and you’re going to sound like you’re doing your show in an empty room. We recently had the problem ourselves in a new studio we put together. We didn’t put any acoustical tiles on the walls because the studio is a temporary one. We found an easy solution to dampening the reverberation of our voices, though.
We ordered a couple of blanket moving pads on Amazon from Northern Tool and Equipment,. We hung the blankets around a 6-foot tall by 2-foot wide audio booth we made of PVC pipe we bought at Home Depot. We put a moving blanket we had already on the top as the roof and another blanket on the wood floor for carpeting. This did the trick! We cut out about 99% of the reverb. The total cost was $55 for the PVC, and $53 for the blanket moving pads (including shipping). You can do this much cheaper if you use fairly heavy blankets instead of moving pads and if you have your local hardware store cut the PVC pipe for you. We used pre-cut PVC pipe which is a bit more expensive.
So with a little effort and money, we knocked out the hollow sound and gave our temporary studio a professional sound. Oh, one more thing. If you’ve already got the dreaded “hollow” sound in your recording, we can reduce the reverberation with a technique called de-reverbing. You can learn more about our audio editing and enhancing service at Audiobag.