Baffles & CloudsCeiling (suspended)

Acoustic Cloud Panel Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)

Horizontal panels suspended below the structural soffit with air gaps above and below. Absorb sound on both faces and edges. Available in rectangular, circular, and custom shapes from mineral wool, metal, or fabric-wrapped cores.

NRC
0.85
αw
0.80
Applications
Ceiling (suspended)
NRC (Noise Reduction Coefficient)
NRC is the arithmetic average of sound absorption coefficients at 250, 500, 1000, and 2000 Hz, rounded to the nearest 0.05. Acoustic Cloud Panel has an NRC of 0.85.
Reference: ASTM C423 / ISO 354:2003

Absorption Coefficients by Octave Band

Frequency (Hz)125250500100020004000
α (absorption)0.250.600.850.950.950.90
125 Hz
0.25
250 Hz
0.60
500 Hz
0.85
1000 Hz
0.95
2000 Hz
0.95
4000 Hz
0.90

RT60 Impact

Installing 12m² of cloud panels (both faces exposed) in a 100m³ room reduces RT60 by approximately 0.40s at 500Hz

Manufacturers & Brands

EcophonArmstrongRockfon

Frequently Asked Questions

What is the NRC of Acoustic Cloud Panel?

Acoustic Cloud Panel has an NRC (Noise Reduction Coefficient) of 0.85, calculated as the arithmetic mean of absorption coefficients at 250, 500, 1000, and 2000 Hz per ASTM C423.

Where is Acoustic Cloud Panel typically used?

Acoustic Cloud Panel is typically used as a ceiling (suspended) treatment. Horizontal panels suspended below the structural soffit with air gaps above and below.

How much does Acoustic Cloud Panel reduce RT60?

Installing 12m² of cloud panels (both faces exposed) in a 100m³ room reduces RT60 by approximately 0.40s at 500Hz

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