Manufacturer
freiraum Akustik
Since 2004, freiraum Akustik has developed custom-made acoustic art panels, room dividers, desk partitions and ceiling rafts for offices, medical practices, meeting rooms and residential spaces. The focus is on combining effective sound absorption with individual design, art motifs, custom colours and personal acoustic consulting all the way through to installation.
Acoustic Ceiling Raft in Custom Colors
Acoustic Ceiling Raft in Custom Colors
Description
Acoustic ceiling rafts are an elegant and highly efficient way to improve room acoustics over large areas. They utilize unused ceiling surfaces to absorb sound early and significantly reduce reverberation in offices, meeting rooms, waiting areas, and living spaces. Freiraum Akustik produces all ceiling rafts individually according to selection, in custom sizes and on request also in XXL formats or as part of complete room concepts. Colors and formats are coordinated with the interior. The elements combine high sound absorption with a dimensionally stable frame construction, low-emission materials, and ready-to-install delivery.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.70 | 0.95 | 1.00 | 1.00 | 1.00 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured
Object area: 51 sq ft
Measurement date (354): 2024-04-22
NRC: 0.95 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm · 2000 g/m² · Caruso Akustik Bond 50 mm / 2000 g/m² · Caruso Akustik Bond | 0.95 | 0.35 | 0.42 | 0.47 | 0.55 | 0.74 | 0.87 | 0.94 | 0.96 | 0.98 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: