Preview Mode Links will not work in preview mode

USSI | An Acoustical and Industrial Building Podcast

Dec 3, 2019

When comparing decibel values, that best way to think about it is to consider how decibel values combine. For example, the combination of a sound having a level of 50 dB, and a second sound having an equal sound level of 50 dB is 53 dB. In shorthand (but not arithmetically correct) 50 dB, quote-unquote, plus 50 dB is...


Nov 5, 2019

Decibel boundaries. Zero decibels is the threshold of human hearing; that is, 0 dB is the minimum sound level an average listener can hear when no other sound is present. At 120 to 140 decibels, sound pressure is great enough to cause our ears to begin to hurt. So nearly all sounds we typically encounter fall between...


Oct 8, 2019

First of all, the term "frequencies," is a short-hand way of talking about the frequency content of the noise control problem at hand. It is a critically important consideration, because noise control treatments are generally most effective at a particular frequency, or range of frequencies. Some noise regulations...


Sep 10, 2019

The number one thing you need to do is to make sure that you are controlling the loudest noise source and making it quieter. If you don't do that, you risk doing nothing at all in the way of noise control. If one noise source is very loud, then a relatively quieter noise source can seem as if it isn't even there at...


Aug 9, 2019

Yes! Every single project should consider noise control. It could simply start with asking the question, "do we think noise might be an issue here?" and go from there. If the answer is a confident "no," then you're done and you move on. If the answer is "yes," or "I'm not sure," then more work is needed.

Tim has three...