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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: recording studio walls posted by stator_99@yahoo.com on April 15, 2015 at 10:17:45:
There are several methods to address keeping sound in a room and not bothering others in the house or neighbors. Insulation is not a very good hinderance in general. Sheetrock screws almost act like an interstate for low frequency sounds. Low frequencies cause the walls to vibrate and then someone starts yelling at you to "turn it down!" So adding mass to the wall is a good first step. Its sort of like pushing a grocery cart. It's much easier to push one that is empty than one that is loaded down with rocks. So adding mass to the walls, ceiling and floor is very helpful.
In order to treat the wall(s) in my house, I used sound isolation clips that are mounted to the studs, steel hat channel is mounted to the clips, one layer of sheetrock is mounted to the steel hat channel and a second layer of sheetrock is then added. Between the two layers a product called Green Glue is applied. Doing this adds mass to the wall and and decouples the sheet rock from the studs. The Green Glue traps the low frequency sound waves and converts them to heat and dissipates them. Lastly, an acoustical sealant is applied around the perimeter of the wall. That leaves the floor and the ceiling where a similar process can be undertaken. Something else that is popular is to build 2- 2x4 stud walls with a narrow air gap between them and where the studs, 16" on center, do not line up with each other. Insulation and sheet rock is applied to the inner wall and the process described above is applied to the outer wall. You can also do the same thing with the floor and ceiling. Basically, containing sound waves is as much science as art and is a very difficult thing to do. One other risk is that in going to such great lengths to contain sound one must be careful that the sound that is created is not degraded. A 50Hz signal is somewhere close to 22 feet long and it has to go somewhere. Depending on the level of containment you achieve, it might be wise to also plan for room treatments. You'd hate to solve one problem and create another.
Below is the web site for green glue and there is a wealth of information on the subject on the web:
http://www.greengluecompany.com
Good Luck!
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- RE: recording studio walls - Paul Wilson 02:56:21 04/19/15 (0)
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