大象传媒

PM listener Tony Sudworth asked whether we could broadcast silence or the sound of the sea, in order to escape what he called "the incessant clamour of the last months", otherwise known as the EU debate.

Eddie Mair spoke to Trevor Cox, a professor of Acoustic Engineering at Salford University, who
has researched how to achieve silence.

(Photo: A group of people practising yoga. Credit: AFP/Getty Images)