Property
Sound absorption (αw) v1.0
Active
URL: https://opendictionary-ecstest.test-bim.com/organization/25869347-9422-4528-ac1c-65954fa4061d/dictionary/83b40007-fcbf-4120-9133-34ad346b1a12/property/1a2c7daf-b6bd-47d8-9780-1456ef9fe304
GUID: d6bad5d6-1025-4cd4-b18a-33ebbcf0bd32
Definition
The mathematically calculated coefficient defining the exact proportion of incident acoustic wave energy that a porous or fibrous material successfully dissipates rather than reflecting back into the space.
Description
Essential for controlling interior reverberation times and ensuring absolute speech intelligibility in large auditoriums, offices, or hard-surfaced volumes.
Example
65
Technical definition
Data type
Float
Unit
Number (#)
Quantity Kind
Dimensionless Ratio
Usage
Property groups (1)
References
Reference documents (3)
- ASTM C423 Sound Absorption by Reverberation Room Method v1.0
- EN ISO 11654 Sound Absorption in Buildings v1.0
- ISO 354 Acoustics Sound Absorption v1.0