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Pyrotek Noise Control has made an impact on the international stage, presenting research papers to acousticians from all over the world at the 20^th International Congress on Acoustics (ICA) in Sydney this August.

Marketing Manager Richard Latimer and Technical Manager Michael Latimer, pictured with Sales Manager, Philip Cadwallen, joined other international experts in discussing recent advances in their fields of interest.

They presented two research papers. The first on a new type of porous sound absorber; the second on unexpected findings regarding contoured foam absorbers.  Michael and Richard also both had the honour of co-chairing conference sessions on architectural acoustics.

Richard says they were pleased to give Pyrotek Noise Control such great exposure on the global stage.  “The technical programme was of a very high standard, and both papers were very well received.”

Richard’s paper explained how Pyrotek’s new porous sound absorber, Reapor combines the two existing common technologies (cellular and fibrous absorbers) using recycled glass which is formed into beads and bonded into a panel. This results in many advantages, including high sound absorption and a product that is non-combustible, rigid and durable, 100% recyclable, and quick to install.

Michael’s paper, written with colleagues from the Department of Mechanical Engineering at New Zealand’s University of Canterbury, investigated some common practices and assumptions relating to foam absorbers, with surprising results.

It is commonly thought that foam with surface shapes such as pyramids and corrugations absorbs more sound due to the additional surface areas.  However, Michael’s research showed that the shape of the foam made little difference.  The thickness of the foam was a more important factor, and painting the foam changed sound absorption only slightly.  Fabric covers provided a useful increase in absorption.

The ICA is held every three years and provides the opportunity for the world’s leading acousticians to meet and share their expert knowledge.

Pictured is Michael Latimer presenting his paper on misconceptions regarding foam shape and absorption.