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The database for acoustic material data. Professional measurement results per ISO standards.

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Acoustic Index
SearchAPIReverberation calculator
For professionalsFor manufacturers

Acoustic database

Search and compare acoustic materials and products with ISO measurement data

Beta
Filter
At least

Shows products of the selected class or better.

Min. αp per octave band
125
250
500
1k
2k
4k
to

3 of 3 results

PTB · StoneαW0.86

Rockfon Diffusorblox unpainted concrete masonry unit

12 inch · Low-frequency absorber
PTB · StoneαW0.45

RPG Diffusor Systems Diffusorblox, painted concrete masonry unit

12 inches · Low-frequency absorber
PTB · Mineral woolαW0.25

Isover mineral fiber insulation panel SPW/F

30 mm · Low-frequency absorber
Acoustic Index

The database for acoustic material data. Professional measurement results per ISO standards.

Products

  • Absorbers
  • Diffusors
  • All products

Company

  • About
  • Contact
  • For manufacturers

Tools

  • Read API
  • Reverberation calculator

Legal

  • Imprint
  • Privacy
  • Terms
  • Terms of use

© 2026 Acoustic Index. All rights reserved.