A different auditory illusion was explained in 1928 by Paul Thomas Younger, an American psychologist, who tested the entire process of audio localization (the way from which audio seems to appear). He produced a pseudophone, an instrument manufactured from two ear trumpets, a single top from the correct side https://sergiowejnr.wikififfi.com/1580508/top_guidelines_of_illusion_of_kundun_mu_online