psychophony

noun2

1. •
   Vocal communication with the dead or with spirits.

   • The third is the message of one or more spirits, which in psychophony is identified only as a spiritual friend. — 2011
2. •
   The appearance of voices or meaningful sounds in the white noise on electronic recordings; electronic voice phenomenon (EVP).

   • Then there was the EVP (Psychophony), that, as I checked on the Internet, is still practised now. — 2014