be·yond
bēˈänd,biˈyänd/ noun noun: beyond 1. the unknown after death. "messages from the beyond" 2. happening or continuing after (a specified time or event).
ghost
/gōst/ noun noun: ghost; plural noun: ghosts 1. an apparition of a dead person that is believed to appear or become manifest to the living, typically as a nebulous image.
evp
Electronic voice phenomena are sounds found on electronic recordings which resemble speech, but are reportedly not the result of intentional recording or rendering.