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30th March 2008, 03:46 AM
| #1 |
| Gear addict  Join Date: Dec 2004 Location: L.A.
Posts: 350
| Noise reduction coefficient - How do I interpret the numbers? Wikipedia: An NRC of 0 indicates perfect reflection; an NRC of 1 indicates perfect absorption. But I see NRC's above 1. For example a 12x12x24 foam bass trap wedge has an overall NRC of 1.35. That's above 1 so what does that mean? |
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30th March 2008, 03:47 PM
| #2 |
| Lives for gear  Join Date: Oct 2002 Location: New Milford, CT, USA
Posts: 9,682
|  First, NRC is a useless spec for music purposes because it considers only speech frequencies. As for coefficients larger than 1, that's explained here: RealTraps - Measuring Absorption Here's a slightly more technical explanation: RealTraps - Alternative Test Methods --Ethan
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