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In large interior spaces, such as gyms, cafeterias, function halls, airport terminals, and even churches, noise from conversations, speakers, music, and applause, has a two-fold problem. First, there is the accumulation of the noise itself: we want to hear the person who is speaking to us, but we don't want to hear the chaotic buzz of every other conversation. The second factor in evaluating the total noise in an interior space is reverberation. All of the sounds created in an interior space, reverberate off of the walls and other non-absorbent surfaces. The overall buildup of conversation, music, activities, and reverberation can cause decibels to soar to
very loud, even painful, ranges. To treat your walls and hard surfaces, you need to add sound-absorbing acoustical foam materials to three non-parallel surfaces. For example, this can be achieved by resurfacing the ceiling and two walls. This would trap the noise as it ricochets from surface to surface and back to your occupants. Here are the products that Silent Source recommends for optimal interior space acoustical comfort:
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