Acoustics

Noise Reduction

Noise Reduction Coefficient (NRC) is a general rating that tells you how much sound a surface (in this case a ceiling tile) will absorb. This rating is represented as either a percentage or a decimal, with 1 (or 100%) being perfect absorption and 0 (or 0%) being perfect reflection. In other words, the higher the decimal or percent, the more sound the tile will absorb.

0.013" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel NRC 0.25 NRC 0.25
Panel + AcoustoTherm NRC 0.30 NRC 0.40
Panel + Soniguard NRC 0.50 NRC 0.85

0.030" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel NRC 0.15 NRC 0.20
Panel + AcoustoTherm --- ---
Panel + Soniguard NRC 0.30 NRC 0.80

Sound Transmission

Sound Transmission Class (STC) is used to rate several different types of building materials for their ability to block sound and prevent it from passing through them. Putting appropriate material between you and a sound source can reduce the apparent loudness of the sound. Adding material with an STC of 5 is clearly noticeable and an STC of 10 or more cuts the apparent loudness by 50%. As the STC goes up, the loudness continues to go down.

0.013" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel STC 10 ---
Panel + AcoustoTherm STC 11 ---
Panel + Soniguard STC 13 ---

0.030" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel STC 15 ---
Panel + AcoustoTherm STC 15 ---
Panel + Soniguard STC 18 ---

Ceiling Attenuation

Ceiling Attenuation Class (CAC) is a measure that tells you how much sound travels up through a ceiling, through a common plenum (the area above a suspended ceiling), and then into an adjacent interior space.

0.013" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel CAC 14 ---
Panel + AcoustoTherm --- ---
Panel + Soniguard CAC 20 CAC 9

0.030" Thick Material

Panel or Panel+ Insulation Combination without Perforations with Perforations
Panel CAC 21 ---
Panel + AcoustoTherm --- ---
Panel + Soniguard CAC 26 ---
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