Vocabulary
들리다
be heard, be audible
Meaning
들리다 : be heard, be audible. Sound becoming perceptible to the listener; 들린다 is declarative present.
Why this form?
듣다 — “listen/hear” takes the perceiver as subject; 들리다 presents the sound as audible.
Useful forms
들린다 = 들리- + -ㄴ다. Contrast 듣는다 (듣다), whose subject is the perceiver.
Forms not to confuse
듣다
음악을 들어요. — I listen to music.
Examples
제가 다 들린다는 건 알고들 계시죠? — You all know that I can hear everything, right?
밖에서 소리가 들려요. — A sound is coming from outside.