Acoustic Comparison of LMUs to Traditional Materials

Lightweight Masonry Units (LMUs) such as Autoclaved Aerated Concrete (AAC) and polystyrene-filled blocks are popular for their low density (250–800 kg/m³), excellent thermal insulation, fire resistance, and reduced structural loading. At 60–80% air by volume, they are dramatically lighter than traditional clay bricks or dense concrete, promising faster construction and lower foundation costs.
However, when it comes to acoustic performance, LMUs often fall short of traditional materials.
Why Acoustic Treatment Matters for Microphones in the Studio – even with Pro Dynamic mics.

In professional radio studios around the world, you’ll often find broadcasters speaking into rugged dynamic studio microphones. These mics deliver that classic warm, authoritative “radio voice” with excellent off-axis rejection and built-in Variable-D technology to control proximity effect. They’re workhorses for a reason: they handle high SPLs, reject handling noise, and sound polished even in […]
Articles & Notes: MMPS showing Bedrock Sound Level and STIPA Meters at Mediatech Africa 2026.

We had the following Bedrock equipment at Mediatech: SM50 Class 2 meter AM100 Class 1 meter SB42 Class 2 long term data logger BAC3 Class 1 Calibrator BTB115 STIPA Talking head Contact Us