Audible (adjective)

1. Able to be heard.
2. Loud enough to be heard.

Origin:

Mid 16th century: from latin audibilis, from audire "to hear".

Examples:

1. The sound was audible from a distance.
2. The song was audible over the noise of the crowd.
3. The voice was audible over the phone.
4. The music was audible through the closed door.
5. The alarm was audible even with earplugs in.