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.

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Acoustic Picture City Motifs

Name: Acoustic Picture City Motifs
Brand: freiraum Akustik

Panorama and City Motifs

Wall

Description

Urban-themed acoustic pictures combine high sound absorption with modern imagery. Panorama and city motifs bring dynamism to offices, hallways, and meeting rooms without losing visual tranquility in the space. Freiraumakustik combines acoustically effective picture carriers with selected photo art and architectural motifs. Many formats are available as panoramas; special sizes up to XXL are possible on request. This creates acoustic pictures that function as design elements and simultaneously significantly reduce reverberation times.

Technical data

Material: Silver matte anodized aluminum frame, acoustically effective fabric covering

Surface: UV-resistant fabric covering, changeable or cold washable

Application: Offices, hallways, conference rooms, reception areas, residential spaces

Certifications: OEKO-TEX 100, low VOC, recyclable, allergy-friendly

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)

NRC

0.95

derived from ISO 354 lab data

Frequency values

α_p nach ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.40	0.70	0.95	1.00	1.00	1.00

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Method (354): Measured

Object area: 51 sq ft

Measurement date (354): 2024-04-22

NRC: 0.95 (derived from ISO 354 lab data)

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Measured values as a table (1 measurement)

Acoustic Picture City Motifs: sound absorption coefficient αs per ISO 354 by frequency and test build-up
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)

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Last updated: 09/13/2026