Gloucester cathedral whispering gallery

The whispering gallery (or tunnel) runs behind the magnificant Great East Window

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Doubt not but God who sits on high,

Thy secret prayers can hear;

When a dead wall thus cunningly

Conveys soft whispers to the ear.

Plaque in the gallery

Classic whispering galleries usually have obvious curved surfaces to allow sound to travel long distances without getting too quiet. This isn’t what is happening here. As the video shows you have a tunnel within which the sound can’t escape, and so travels easily from one side of the cathedral to the other.

Great demo of the whispering gallery

The first documentation of this comes a meeting of the Royal Society in 1662. Such scientific luminaries as Robert Boyle (a founder of modern chemistry) had been discussing echoes and sounds and sought further information about the whispering gallery from politician Henry Powle.

Logistics

See Gloucester Cathedral website. While you’re there, you can also enjoy the reverberation in this huge cathedral (reverberation time about 8 seconds apparently).

Photo Credits

© Julian P Guffogg (Creative Commons Licence)

Author: Trevor Cox

I am a Professor of Acoustic Engineering at the University of Salford where I carry out research and teaching focussing on architectural acoustics, signal processing and audio perception. I am also an author and radio broadcaster having presented many documentaries on BBC radio and written books for academics and the general public.