Recorded on a home made hydrophone in inish oirr harbour. Most of the original recording is below the limit of normal hearing. The sound is translated up in frequency to the normal hearing range.
Various versions of opening a normal dvd-case and taking out the cd was used to execute the sound. A zoom h6 recorder was used, with the xy capsule, in a normal room.
Five years ago, freesound user unfa uploaded his gift to the world --- the worlds best quality silence, a free 10 minute sample stolen from the infinite void of existential truth. Here is a edited copy of his sample, normalized to 0. 0dbfs. Because what's the point of such a recording if you don't use all the available bits?. Please see https://freesound. Org/people/unfa/sounds/231965/.