Very cool. As a complement to that, Tom Cosm recently posted a link to a list of unexplained sounds recorded by the NOAA’s autonomous hydrophone array.
The “earth chorus” space sound from that link you posted sounds like the “Upsweep” underwater sound from NOAA:
And … this Earth song is played over the sound of the BIg Bang’s Cosmic Microwave Background (CMB) fundamental note - 51 Octaves below concert A! http://www.astro.virginia.edu/~dmw8f/BBA_web/unit05/unit5.html . I guess it’s kind of like a cosmic bagpipe - an A drone and the Earth ditty on top.
Ultimately cool - as seen in the CMB frequency plot, there are measurable harmonics! Can we get that as a preset in Padshop (FR)?