audible

听得见的英释中释adja sound that is audible is loud enough for you to hear it

1 audible alarm,声音报警，音响报警

2 audible sound,n. 可听见的声音

1 His voice was barely audible (= could only just be heard ) above the roar of the crowd..人声嘈杂，几乎听不见他的说话声。