Guides will demonstrate the clapping telephone, which was used to signal over long distances in this ancient city.
(5 Votes, average 3.80)
Loading...
This is the ruined city of the Kingdom of Golkonda (c. 1364–1512) which has several curious acoustic features including what has been described as an “amazing clapping telephone”. Clap near the entrance, and sound is reflected by a nearby building so that it can be heard a kilometer away at the highest point of the city, at the Bala Hisar pavilion. Some other quirk of this “magical acoustic system” means that close to the person clapping, the sound can only be heard within a few metres.
Demonstrating the clapping telephone. Lynn Robert Carter commented that the sound is more remarkable than appears on this video.
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.
View all posts by Trevor Cox
One thought on “Golkonda, India”
I’ve been there and this video does not do the sound does not do the sound justice. It seems to me that it was far more pronounced and obvious.
Loading...
I’ve been there and this video does not do the sound does not do the sound justice. It seems to me that it was far more pronounced and obvious.