Sonic Wonderland - World's Longest Echo by sonicwonderland published on 2014-01-15T15:41:33Z Trevor Cox, Professor of Acoustic Engineering at the University of Salford and author of Sonic Wonderland, has discovered the world record for the ‘Longest Echo’. The 1970 Guinness Book of Records is the last claim for the ‘longest echo’, when the solid-bronze doors of the Hamilton Mausoleum in Scotland slammed shut, it took 15 seconds for the sound to die away to silence. In researching his new book Sonic Wonderland: A Scientific Odyssey of Sound Trevor Cox discovered a place where the sound echoes around for a full minute longer, smashing the previous record. Trevor Cox travelled to the oil storage complex at Inchindown, near Invergordon, Scotland. These reservoirs supplied the naval anchorage in the Cromarty Firth at the bottom of the hill. The tanks were constructed in great secrecy amid concerns about the strengthening of Germany’s armed forces during the 1930s and the threat posed by long-range bombers, which is why the tanks were dug deep into the hillside. The vast complex took three years to complete. His guide was Allan Kilpatrick, an archaeological investigator for the Royal Commission on the Ancient and Historical Monuments of Scotland. Trevor had to enter the tank through one of the 18 inch diameter oil pipes because there are no doors. The tank could hold 25.5 million litres of fuel and has walls 45cm thick. The space is about twice the length of a football pitch, 9m wide and 13.5 metres high. Allan fired a pistol loaded with blanks about a third of the way into the storage tank, and Trevor recorded the response picked up by the microphones about a third of the way from the far end. This is a standard technique used in concert hall acoustics; old black-and-white photographs show a gun being fired on the stage of the Royal Festival Hall when they tested the acoustics back in the 1950s. Genre Sonic Wonderland Comment by Silent Chaos The IRs can be downloaded here: https://freesound.org/people/acs272/packs/13598/ 2021-10-01T11:32:22Z Comment by Robbie Ricucci nice 2020-10-22T18:56:47Z Comment by Robbie Ricucci nice 2020-10-22T18:56:44Z Comment by offthesky using this sound file as an impulse response for convolution vst plugins, guitars sound truly amazing run through this echo! 2018-10-09T18:22:20Z Comment by PressureWorks Yeahhhhhhhhhhhhhhhhhhhhh 2017-12-31T03:41:12Z Comment by the Ladywell Lout is this slowed doon?? 2016-10-22T23:22:55Z Comment by Phillip Harper Its an Echo. 2016-09-16T11:26:11Z Comment by Electric Dreams collab bro 2016-09-15T13:50:09Z Comment by Peter Annear A great ear cleansing exercise and I am enjoying the book too. Thank you. HEALTH WARNING being of a certain age I had increased my volume setting to levels I don't usually listen at. Within 2 secs of the echo finishing I had Pete Swanson in my headphones at seriously dangerous levels. Listeners beware. 2015-07-06T08:26:09Z Comment by CrinΞx THIS IS A WASTE OF TIME!!! 2014-12-05T20:50:23Z Comment by Amanda_Robb1 this is soo stupid 2014-10-10T16:21:02Z Comment by Michael369 nice... 2014-08-31T16:45:31Z Comment by The Cosmic Arc nothing to hear from here on 2014-06-03T17:30:00Z Comment by kinderale please give us an official IR ! : 2014-05-22T14:17:35Z Comment by waveform99 @backinthedaymusic: Can't wait for the club mix!! 2014-05-16T02:27:56Z Comment by a X m Pryda snare goes here 2014-05-07T15:38:02Z Comment by kenwud damn this part is good 2014-05-03T11:47:57Z Comment by naotko here is the drop! no! 2014-05-03T11:22:22Z Comment by Geche has anyone alread asked to remix this? 2014-04-27T02:10:43Z Comment by user4006179 It's not an echo. It is reverberation, the scientific term for this effect 2014-04-09T09:40:10Z Comment by oo oxygen amazing!!! 2014-03-20T22:07:51Z Comment by nblnm WHAT AM I DOING HERE 2014-03-08T15:04:33Z Comment by SMONSSA Nice for convolution ! 2014-02-28T01:48:37Z Comment by Alessandro Gaffuri best comments ever!!! 2014-02-13T00:25:25Z Comment by Bolo Drum & Bass EPIC COMMENTS 2014-02-13T00:15:36Z Comment by Isaiah Nims Best sound for hearing test 2014-02-07T00:11:27Z Comment by Arcan3 @dylansingleton: haha! 2014-02-03T01:17:36Z Comment by edjones overrated 2014-01-29T10:24:36Z Comment by Liveschool We made this into an Ableton reverb device, download it here: http://blog.liveschool.net/the-worlds-longest-reverb/ 2014-01-29T05:42:35Z Comment by Colony Productions haha :) 2014-01-29T00:33:10Z