Voice Over Recording Terminology
By Dan Lenard
The Home Studio Master
And now,.. more confusing terminology- Whats the difference between Sound Proofing and Sound dampening. And is Acoustical treatment the same as those two things.
I get a lot of e-mail from people who still don’t get this.
With a home voice over studio, from an acoustical perspective, you have two big challenges.
Keeping outside noise out, and keeping the noise you make reading all those commercials and audio books from bouncing all over the room and back to your mic.
Lets start with the harder and more expensive “sound Proofing.”
The term ‘soundproofing’ is rather misleading, because truth be told, especially with a home voice over studio, you can cut down on sound leakage but without expensive and specific building techniques, you can’t get rid of it altogether. Soundproofing, is specifically designed to increase the degree of acoustic isolation between the studio and the world outside — cutting down on noise that leaks into or out of the studio. Sound isolation works the same both ways, so there’s no difference in approach to keeping sound in or out.
So lets change some terminology in reference to you, at home. Lets start using the term “Sound isolation” instead of sound proofing. That means finding a place to record that is farthest from outside noises and the noise caused by the mechanicals in your house. Thats why interior closets, if they’re big enough make the most sense. If you have no walk in closets, you may have to improvise. The simplest way to block sound is to put a solid wall in its way — the more solid, the better the isolation you’ll get. As a rule, if you double the mass of a wall, you halve the amount of sound transmitted through it. But you have to be surrounded on 6 sides in a square room. And that includes a door.
Acoustic treatment, in the context of a recording studio, generally deals with the acoustic quality of the room from a listener’s point of view. In other words, if you monitor in a control room that has been designed using the correct acoustic treatment, what you hear is likely to be more accurate than the same recording played back over the same speakers in an untreated room.
Soundproofing, on the other hand, is specifically designed to increase the degree of acoustic isolation between the studio and the world outside — cutting down on noise that leaks into or out of the studio. Sound isolation works the same both ways, so there’s no difference in approach to keeping sound in or out.
Q: I’ve heard that sticking egg boxes or acoustic foam to walls will help soundproof a room. Is this true?
Egg boxes can make a marginal improvement to some aspects of a room’s acoustics by breakingup reflections from hard surfaces, but they are virtually useless for soundproofing. The same is true of lightweight suspended ceilings, acoustic foam and even Rockwool (Rockwool tends to be used for acoustic treatment or for damping out resonances inside partition walls. All these materials have their uses, but they’re mainly for acoustic treatment, not for soundproofing).
For more information on how to set up a a home studio, contact Dan Lenard at http://homevoiceoverstudio.com