Posts tagged focussing
Legend has it that the acoustic focus in this cavern was exploited to enable the whispers of prisioners held here to be overheard. However today, only the reverberance of this vast space can be enjoyed.
Many guide books note the crazy acoustics in this mausoleum: it is both a whispering gallery and also an echo chamber where sounds can be heard repeating 7-10 times.
A whispering gallery found in a surprising place, Grand Central Terminal in New York, one of the largest railway stations in the World,
St Paul’s Cathedral includes a circular whispering gallery as well as impressive reverberation
Acoustic mirrors were an attempt to detect enemy aircraft flying towards England in the early twentieth century.