Articles tagged “rc curve”
2 articles covering rc curve in acoustic engineering and building design.
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GUIDES9 min read
Background Noise Curves: NR, NC and RC Compared
Compare NR, NC, and RC background noise rating methods with worked examples showing which curve to specify for HVAC noise control in offices, studios, and hospitals.
March 20, 2026
NR curveNC curve
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TUTORIALS20 min read
Noise Criteria Explained: NR, NC, and RC Curves — Which One Does Your Project Need?
NR (Noise Rating), NC (Noise Criteria), and RC (Room Criteria) all rate background noise levels in buildings — but they use different curves, different frequency ranges, and are required by different standards. Here is how each system works, when to use which, and the specific values your HVAC engineer needs to hit.
March 14, 2026
noise criteriaNR curve