acousmatic

Etymology
From, from , from.

Adjective

 * 1) Referring to a sound that has no visually identifiable cause.
 * 2) Referring to Pythagorean disciples who for years listened to his lectures from behind a curtain, unable to see him.
 * 3)  Referring to pre-recorded music that is presented in concert using loudspeakers, e.g. some types of computer music.

Translations

 * French: ,
 * Portuguese: acusmático