Acoustic IndexAcoustic Index

Manufacturer

alpha AKUSTIK

alpha AKUSTIK is the acoustics brand of Staudigel GmbH from Veitshöchheim — a family business with over 70 years of experience in wood processing. On around 7,500 m² of production area the company manufactures sound-absorbing perforated, slotted and micro-perforated panels (NANOLITE) on an MDF base for wall and ceiling. The panels are built up with a backing acoustic fleece (SoundTex) and mineral insulation into acoustically effective claddings. The range spans from discreetly perforated visible surfaces to highly absorbent slot-and-hole patterns and is broadly documented by accredited reverberation-chamber measurements (Fraunhofer IBP, BAE Fiedler, ita).

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alpha AKUSTIK Perforated Panel

ALPHA-AKUSTIK Perforated Panel (round perforation)

WallCeiling

Description

The round-perforated acoustic panel by alpha AKUSTIK (Staudigel GmbH): an MDF carrier board with a backing acoustic fleece (SoundTex), used as a sound-absorbing wall and ceiling lining. Absorption is tuned via the hole pattern (grid spacing and hole diameter, e.g. 16/16-10-5) and the backing build-up. Available from discreetly perforated visible surfaces to highly absorbent hole patterns — raw, veneered or melamine-coated. As the hole ratio and wall distance grow, the effect rises up to the highest absorption class A.

Technical data

Material: MDF carrier board (16/0.7 in) with a backing acoustic fleece SoundTex C 1986 (Freudenberg), backed with mineral wool (Rockwool Sonorock) or an air gap
Surface: perforated; raw, veneered (ash/anigre, etc.) or melamine-coated
Application: sound-absorbing wall and ceiling lining; also as a closed partition / gypsum-box element and as a cabinet door
Certifications: Accredited reverberation-chamber measurements per DIN EN ISO 354 (evaluated per DIN EN ISO 11654): Fraunhofer Institute for Building Physics (IBP, Stuttgart), BAE Fiedler (Lahnau), ita Ingenieurgesellschaft (Wiesbaden) and test centre STS 121 (CH)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 44 variants

Choose the perforation

By mounting

NRC
0.95

Frequency values

αp per octave band

f (Hz)1252505001k2k4k
αp0.500.901.000.950.900.70

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Test report: BAE 23-310-07

NRC: 0.95 (derived from ISO 354 lab data)

Institute: BAE Fiedler – Office for Acoustics and Engineering (Lahnau)

Measurement date: 2023-03-01

Distance: 1.6 in Sonorock + 5.5 in air gap

Perforation: 8/8-5-3

Terms of use
Measured values as a table (44 measurements)

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