Understanding our Test Results

Our sound barriers are have been rigorously tested to UKAS standards BS EN ISO 717-1:2013 for total noise reduction.

With this information our customers can directly compare our products with other acoustic barriers on the market to determine the best choice for them. Customers can also pass this data onto local authorities, their customers during the tendering process and anyone else who is interested in the performance of our sound barriers.

The UKAS test was undertaken in a sound proof room where the partition was our Sound barriers, one side created noise throughout the frequency range and microphones measured the amount of decibels in both sides of the room. The difference between the two equates to the amount of noise reduced by our acoustic barriers.

When noise is made, the sound waves created differ in both power (decibels) and pitch (frequency), but typically if breakers emit around 100 – 110 decibels at a frequency 3150hz, by looking at our graph below, our constructor max will reduce noise pollution by 31 decibels, at 2500hz 29.1 decibels and so on.

Attenuation Graph

Our sound barriers have also undertaken UKAS test BS EN ISO 354:2003 to determine the level of noise that can be absorbed by the market leading acoustic foam we use.

The results show an absorption co efficient for different frequencies of noise, the co efficient on the results table basically relates to a percentage of noise absorbed from a particular area, at 500hz for example our constructor max barrier will absorb 90% of noise that reaches the rear of the sound barrier, at 250hz 100% of the noise.

Absorption Graph

It is also important to remember, these results are from a soundproof laboratory, where sound waves bounce off the walls, roof and floor and continue to circulate, in the real world, once reflected off an acoustic barrier, that sound wave would continue to travel away from the area you are protecting.