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About Gary Fiedtkou

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So far Gary Fiedtkou has created 2 blog entries.

Solving Classroom Noise Problem

Sound in a large room will echo, creating an acoustically challenging situation.  That problem is amplified when the room has many people talking in it, but little or no acoustical treatment. Hard surfaces such as tile floors, cinderblock walls and drywall ceilings typically reflect almost all of the sound that hits them. A common area [...]

NRC and STC. What are they? What’s the difference?

In the literature for many acoustical products you will find an NRC rating.  On some you may also find an STC rating.  What’s the difference?  These two ratings have completely different meanings. NRC is short for Noise Reduction Coefficient.  In techno-speak, it is the average of the individual sound absorption coefficients of an item at [...]