noise barrier

What does NRC and SAA stand for? Sound absorption properties of acoustic materials can be measured in lab tests. Specifications for materials used in sound absorption commonly include an NRC (Noise Reduction Coefficient) for simplicity, in addition to more detailed frequency versus amplitude charts. The Noise Reduction Coefficient (NRC) and Sound Absorption Average (SAA) values are …

What is NRC ( Noise Reduction Coefficient)? Read More »

When building your home recording studio one of the important factors you have to deal with is the sound transmission. To determine their soundproofing quality materials are tested for sound transmission loss values, that can be measured, and rated in a single-number rating system – Sound Transmission Class (STC). The STC rating figure very roughly reflects the decibel …

What is STC? Read More »