All 5 Uses

audible
in
A Streetcar Named Desire
(Auto-generated)

She is so excited that her breath is audible as she dashes about.†
Scene 3.9

audible = capable of being heard
She is calling barely audibly.
Scene 3.9 *

audibly = loud enough to be heard
Then a clicking becomes audible from the telephone, steady and rasping.†
Scene 3.10

audible = capable of being heard
The barely audible 'blue piano' begins to drum up louder.†
Scene 3.10
The 'Varsouoiana' rises audibly as Blanche enters the bedroom.†
Scene 3.11

audibly = in a manner that can be heard

Definitions:

(1) (audible as in: barely audible)
capable of being heard
(2) (meaning too rare to warrant focus)
In football, the term has come to include an instruction shouted from the line of scrimmage.

Recently, the word is also being used to indicate sounds that could be played on a phone or computer; for example "audibles include creative hellos that can be downloaded."