Each five minute program contains a continuous week of Earth sound, as recorded by an underground seismometer in rural coastal Maine in the northeastern United States.
To make the Earth’s low-frequency sounds audible, these recordings have been sped up by a factor of 1,800. As each second ticks by, you’ll hear exactly one-half hour of real Earth time.
The podcasts themselves contain no voiceovers in order to let the Earth speak for itself. The written commentary accompanying each program may provide some helpful context to the sounds that you are hearing.