Extensive and rigorous testing, both in the laboratory and in the field, confirms the unrivalled all-round performance of Echo Barrier’s resilient and durable acoustic panels.
Echo Barrier’s products lead the way in noise attenuation, while remaining compact and lightweight. When it comes to the crucial task of absorbing low-frequency sound, Echo Barrier’s innovative composite can match the performance of conventional noise-absorbing materials that are more than twice as thick.
There are six factors that determine performance in the field. Echo Barrier excels in every respect.
At the heart of Echo Barrier’s acoustic panels is an innovative hi-tech composite that reduces noise reflection and suppresses reverberation. It can even absorb 100% of sound in the crucial 300Hz-1kHz frequency range (low/medium frequencies).
This contrasts dramatically with traditional hard-surface barriers (wood, metal etc). By reflecting sound rather than absorbing it, hard barriers can in fact aggravate noise pollution
Independent tests prove that Echo Barrier acoustic panels do not absorb water when exposed to heavy rain or when jet-washed. They are designated as waterproof (BSEN 60529:1992 IPX6 / IPX9 standards).
Conventional acoustic blankets and barriers, as produced by other manufacturers, contain materials like fibreglass and Rockwool. These can easily become waterlogged, which makes them heavy and cumbersome to handle. Waterlogging can also halve their capacity for absorbing sound.
Extensive testing has proved that Echo Barrier’s acoustic panels provide unrivalled noise attenuation in the field, while laboratory tests have measured reductions of some 40dB (99.99% of sound energy). These outstanding results are achieved with high-tech panels which are 50% lighter in weight than conventional solid acoustic barriers or sound blankets. Echo Barrier’s modular system of acoustic panels strikes the optimum balance between mass, weight and dimensions. The panels can be rapidly linked and configured to create a noise barrier that is both highly effective and physically easy to manage. Generally speaking, barrier mass has a major impact on sound transmission: the heavier the material, the less it vibrates, and consequently less sound passes through it. In practice, more sound tends to pass over a barrier rather than through it, so it can be advantageous for a barrier to be taller rather than simply greater in mass.
Echo Barrier’s modular system of acoustic panels strikes the optimum balance between mass, weight and dimensions. The panels can be rapidly linked and configured to create a noise barrier that is both highly effective and physically easy to manage.
To create an acoustic wall or curtain, they can be linked both vertically and laterally, or doubled up in thickness in order to absorb still more noise.
Echo Barrier’s system can adapt to all eventualities. Central to its success is an innovative hi-tech composite. Highly sound-absorbent, but also light in weight, it forms the heart of the portable, modular system.
Suitably configured, Echo Barrier’s system of acoustic panels reduces noise substantially for diverse projects and site geometries. Its components can be positioned, combined and layered to provide the best possible response to particular conditions and challenges. To create an acoustic wall or curtain, the panels can be linked both vertically and laterally.
The geometry of noise mitigation concerns the relative positions of:
* i) any barrier,
* ii) the source of the noise it is intended to mitigate, and
* iii) the noise receiver (the human ear). The closer the barrier is placed to the noise source, the greater the noise attenuation: the barrier’s ‘acoustic shadow’ becomes larger – just as an object’s visual shadow becomes larger when placed closer to a light source. If a barrier is made taller, this also increases the acoustic shadow and reduces the amount of sound that passes over the barrier.
Echo Barrier offers a modular system of acoustic panels that are lightweight and easy and quick to deploy. It thus becomes simple to vary the site geometry in response to particular conditions and challenges, or to developments and changes in the course of a project.
When it comes to noise management in the field, it is especially important to attenuate frequencies between 300Hz and 1000Hz (low-to-medium frequency). Within that frequency range, Echo Barrier’s innovative acoustic panels offer, on average, an unprecedented 77% efficiency.
As a project progresses and circumstances change, Echo Barrier’s lightweight, compact panels can be readily reconfigured in response to different site geometries and new requirements for noise attenuation. They can also be linked both vertically and laterally, and doubled up in thickness, to create an acoustic curtain or wall.
Echo Barrier’s acoustic panels are resilient and built to last. Highly resistant to water, extreme weather and UV rays, they will perform to optimum effect year in, year out, even in the most demanding environments.
Echo Barrier’s manufacturing process, which includes hand-finishing, ensures both outstanding durability and a high standard of visual presentation. Looks really do matter: research has shown that the panels’ appearance contributes to positive perceptions of their performance. This has a bearing on any propensity to complain about noise.
Tested to international standards:
Water-resistant test standard BSEN 60529:1992 IPX6 / IPX9
Fire-resistant test standard BS 7837-1996 ASTM E84
Dust-resistant test standard BSEN 60529-1992
Cold-resistant test standard (result) BSEN 60068/2/1:2007
Tensile test standard (result) ISO 17025 (5.52kN vertical, 1.34 kN horizontal)
UV-resistant 3 years (USA + Canada), 5 years (rest of the world)
Why do our acoustic barriers work so well?
The undisputed high performance of Echo Barrier’s portable acoustic panels derives first and foremost from their capacity for absorbing noise. This is complemented by their exceptional resilience and durability, and their high standards of visual presentation. (Image shows cross-section of Echo Barrier H10.)
Front outer layer
Extremely durable, high-quality waterproof PVC, while offering an impressive visual finish.
The heart of the panel: Echo Barrier's lightweight, but highly noise-absorbent composite.
Waterproof breathable membrane
The membrane lets in sound, so that it can be absorbed by the composite, but keeps water out.
Durable reinforced mesh
The mesh protects the panel in tough working environments without compromising its acoustic performance.
Designed with ease of use in mind
More product information
BS EN 60529:1992 IPX6, IPX9
When testing the performance of an acoustic barrier, there are two key measurements:
- The transmission loss, i.e. the decrease in noise level (measured in decibels) that results when sound passes through a solid barrier;
- The efficiency, particularly over the key frequency range, of sound-absorbing materials in preventing sound reflection and any consequent increase in noise.
Both in the laboratory and on-site, Echo Barrier’s products achieve world-leading performance for both transmission loss and efficiency of sound absorption.
In fact, under certain circumstances Echo Barrier’s products can perform better in the field than in the lab. The chart below shows the results of independent tests using a diesel-powered trenchless excavation drill.
The results show the following: when compared with their performance in the laboratory, Echo Barrier panels deployed on site achieved an extra 5dB in noise reduction at certain frequencies.