Roomtone — contribute a material

Brand *

Product line *

Finish / colour name

Type

Absorption coefficients (α per octave band) *

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

NRC: auto from the four mid bands

Width (mm)

Height (mm)

Thickness (mm)

Air gap (mm)

Swatch colour

Image (swatch / product photo)

Product URL

Data source

Coefficients are measured absorption (α), 0–1.3 — chamber values can exceed 1.0. Leave a band blank if you only have a partial spec; it just won't show as a "complete" treatment in the predictor. Everything you add is live for everyone immediately.

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