An echo chamber is a hollow enclosure used to produce echoing sounds, usually for recording purposes. For example, the producers of a television or radio program might wish to produce the aural illusion that a conversation is taking place in a cave; this effect might be accomplished by playing the recording of the conversation inside an echo chamber, with an accompanying microphone to catch the echoes.
In music, the use of acoustic echo and reverberation effects has taken many forms and dates back many hundreds of years. Medieval and Renaissance sacred music relied heavily on the composers' extensive understanding and use of the complex natural reverberation and echoes inside churches and cathedrals. This early acoustical knowledge informed the design of opera houses and concert halls in the 17th, 18th and 19th centuries; these were deliberately built to create internal echoes in order to enhance and project sound from the stage in the days before electrical amplification. Sometimes echo effects were the unintentional side effect of the architectural or engineering design, such as for the Hamilton Mausoleum in Scotland, reportedly having the longest echo of any building.
Read more about Echo Chamber: Electro-acoustic Echo Chambers, Electronic Echo Chambers and Echo Machines, Oil-can Delay Method
Famous quotes containing the words echo and/or chamber:
“If I had not come to America, where I felt free to formulate tentatively insights at which I had empathically arrived, I would have accomplished very little. I would never have begun to publish, to teach, to undertake research. Because if one does not find an assenting echo to one’s ideas, if one is passed over, as I was in Vienna, then one cannot create. To create, after all, is to believe that what one says will count.”
—Margaret S. Mahler (1897–1985)
“That’s where Time magazine lives ... way out there on the puzzled, masturbating edge, peering through the keyhole and selling what they see to the big wide world of chamber of commerce voyeurs who support the public prints.”
—Hunter S. Thompson (b. 1939)