electroacoustic
or e·lec·tro·a·cous·ti·cal
[ ih-lek-troh-uh-koo-stik or ih-lek-troh-uh-koo-sti-kuh l ]
/ ɪˌlɛk troʊ əˈku stɪk or ɪˌlɛk troʊ əˈku stɪ kəl /
adjective
of or relating to electroacoustics.