Sound isolation issues

Started by hiremedia on 25 September 2005. 1 reply.

Originally posted at johnlsayers.com, topic 4419.

I'm a producer who works in my home studio. It's a meager design, but it works. I recieved my training at Ohio University's Zanesville campus. The media department includes a fully functional multitrack studio that includes Pro Tools, and tons of other goodies that make my mouth water. The studio isn't exactly soundproof. Being one of the branch campuses of the university, they don't get the money that the main campus does, so they couldn't soundproof it the way that they should've been able to. In fact, the "music room" doubles as a TV studio and is equipped with TV cameras in 1 half of the room. It's also directly above a computer lab, and the floors are paper thin. Right after I graduated, a band was recording in the lab and there were complaints about noise by other teachers and faculty. Now the lab has been shut down until a solution has been found, which is a shame. I wanna help out in getting the studio functioning again, and I have an idea of how this could be solved on a low budget, however I'm not sure how this would work. And if anyone wants to suggest anything please do. My idea is to create a collapsable riser that the drums could sit on. This would get the drums off of the floor, and make them less audible to the computer lab below. Of course, since the riser would be sitting on the floor, it would need to be isolated from the floor as well. Not sure how that would be possible, but I know that some companies make foam pads for monitors to isolate them from the desks they sit on. I figure something similar could be fashioned for this purpose, if it doesn't already exist. Then to solve noise issues for the classrooms surrounding the lab, I think it would be possible to just set up collapsable drum sound sheilds to further lower the decibels coming from the room. After drums have been recorded, guitar and bass amps could also be placed on this riser and surrounded by the drum shields, eliminating any vibrations through the floor and killing noise for surrounding classrooms. The riser set up could even be used as a vocal booth, although vocals aren't really the problem here. I find this to be a cheap and effective solution to the problem, but I'm not an expert. My degree was an associates degree, so I admit that I don't know everything there is to know about this sort of thing. If anyone has any suggestions or feedback on this, please let me know. I wanna help out my alma mattar any way I can, because I owe them a lot for the knowledge I gained from them. Thanks in advance. Please email me if you want to respond via email. [removed]
Although there is some structure-borne noise generated from the impact of the drums to the floor, it's probably the airborne noise that is the main culprit. That being the case, I strongly doubt that merely floating the drums or using "collapsable shields" would make any noticable difference in the adjacent spaces. With quiet space below that must be protected from noisy space above, the solutions are not simple and not cheap. It is often extremely difficult/expensive to soundproof a building that already exists. If the situation were reverse (i.e., noisy space below, quiet space above), and the building sat on an industrial-strength slab, the outlook would be less grim. Study all of the "sticky" threads and announcements of this forum to learn all you can about two leaf systems (M-A-M, or mass-air-mass), and the critical importance of sealing the leaves. Learn a bit about Sound Transmission Class, or STC, and then heed the warning that STC only accounts for a limited range of frequencies that is not sufficient for measuring the effectiveness of a studio application. Finally, beware proprietors of "magic solutions" that claim incredible results from simple and/or inexpensive (or even expensive) products. Dollar for dollar, nothing beats mass-air-mass, and mass-air-mass itself isn't rocket surgery. Beyond that, I think we would need much more detail about the building's construction and the noise levels themselves to be able to give much more insight. Sorry to be the bearer of bad news.