The modern sound level meter is a powerful tool with many useful functions, but what are the most important things to know? This post aims to act as a simple to follow guide.
Have you ever covered your ears with your hands to protect yourself from loud noise? That’s the closest to natural hearing protection that we’ve got, but just how much does it reduce the sound pressure level reaching your ear? And what’s the best method? This experiment aims to find out.
The UNESCO World Heritage Site at Paola, Malta has special significance due to its remarkable acoustic properties. The Hypogeum of Ħal-Saflieni is an underground cave system covering around 500m² on 3 levels, with various inter-connecting corridors and passageways that lead to a number of small chambers, built between 3000-2500BC. The cave system was re-discovered in 1902 and since then there has been particular interest in one of the rooms, named the “Oracle Chamber”. The space is said to amplify voices dramatically, with certain frequencies resonating enough to be felt through the body.
Here at Southampton Solent University we were lucky enough to have a brand new hemi-anechoic chamber opened on May 2013. Take a look around in the interactive street-view image below, or hit continue reading to see some higher quality images of our equipment.