Loudspeakers in jet engines

Unless one is attending an aeronautics convention or going on a trip, noise associated with aircraft engines is rarely tolerable. Different means of significantly reducing that noise are being tested by EPFL's Electromagnetics ...

The secrets of owls' near noiseless wings

Many owl species have developed specialized plumage to effectively eliminate the aerodynamic noise from their wings – allowing them to hunt and capture their prey in silence.

Getting to the bottom of wind turbine noise

University of Adelaide researchers are developing a sophisticated wind turbine experiment to investigate exactly how wind turbines produce noise.