zvučan

1. (of a voice, sound) resonant; sonorous
   On ima dubok i zvučan glas. — He has a deep, resonant voice.
2. (of a name, title) high-sounding; big-name
   Na festivalu nastupaju zvučna imena iz regiona. — Big names from the region are performing at the festival.
   Dobio je zvučnu titulu, ali malu platu. — He got an impressive title but a small salary.
3. (in the form zvučni) sound; audio
   Zvučni signal označava kraj testa. — A sound signal marks the end of the test.
   Naš stan ima dobru zvučnu izolaciju. — Our flat has good soundproofing.
4. (in phonetics) voiced
   Glas b je zvučan, a p je bezvučan. — The sound b is voiced, and p is voiceless.

In the meaning "sound, audio" the definite form zvučni is used.