Designing acoustic devices using thin materials

Acoustic devices like mufflers and loudspeakers are all around us. In the design of such devices, computer simulations and numerical optimisation algorithms are becoming increasingly useful in order to shorten the product ...

How noise pollution is changing animal behaviour

Noise pollution, generally an unintended byproduct of urbanisation, transport and industry, is a key characteristic of human development and population growth. In some cases, it is produced intentionally, for example when ...

Jet engines are getting quieter

With no sign of our appetite for air travel diminishing, we need to create quieter aircraft that are easier to live with. In fact, while those living near airports may beg to differ, data included in the Airports Commission ...

New method provides direct SI traceability for sound pressure

Scientists at the National Physical Laboratory (NPL) - the UK's National Measurement Institute - have developed an optical method for remotely measuring sound pressure inside a fully anechoic chamber which is the first to ...

United States, China team explore energy harvesting

Six authors have described their work in harvesting energy in a paper titled "Ultrathin, Rollable, Paper-Based Triboelectric Nanogenerator for Acoustic Energy Harvesting and Self-Powered Sound Recording." Translation: A paper ...

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