How silence becomes possible — even outdoors
Outdoor noise abatement is not just about building barriers — it’s about understanding how sound behaves. Sound waves disperse in all directions, bounce off hard surfaces, and linger in our environment. This is what causes echo, reflection, and a general sense of noise overload — especially near roads and railway lines.
CALMA-TEC took on this challenge early on: to develop a system that not only blocks noise but absorbs it. The result is a new standard in outdoor noise protection — combining Zero Reflection, full absorption, and durability in extreme conditions.
What makes open absorber technology different?
Unlike reflective noise barriers, which bounce sound back into the environment (often just shifting the problem), open absorber technology does something fundamentally better: it catches the sound.
- 🌀 It absorbs, rather than reflects
- 🌬️ It remains effective in wind, rain, and sun
- 🧱 It enables smart, compact upgrades to existing systems
- ♻️ It uses recyclable, high-performance materials
CALMA-TEC integrates this technology into PIN, our patented top-mounted absorber element. Developed through years of field testing, PIN uses a high-performance closed-cell polyethylene foam that is weatherproof, UV-stable, and tuned to absorb a wide spectrum of frequencies — from sharp noise peaks to deep rumbling from freight and rail traffic.
The impact: measurable, certifiable, real
Our absorber systems have been tested in cooperation with authorities and infrastructure operators across Europe. The results are clear:
- 📏 Up to 6 dB(A) additional shielding through PIN alone
- 🛤️ Success system developments for high-speed trains (300km/h)
- 🌦️ Lifespan of over 25+ years, even in harsh outdoor environments
- 🔇 Zero echo, zero reflection, and dramatically reduced overall noise exposure
Designed to be seen — or to disappear
PIN doesn’t require major interventions. It’s a lightweight, aerodynamic spoiler that mounts directly to existing walls — extending their acoustic performance without raising their height or changing their structure. It blends in visually, or stands out with intent.
Whether along railways, roads, or private fences — PIN adds what many barriers are missing.
Reflection is noise you don’t need
Let’s design it out — with CALMA-TEC’s open absorber technology.
📞 Call us:
+43 2236 864 100
📧 Email:
office@calma-tec.com
