1.   A shrill whistle could be discerned, audible above the scrape and screech of the music.

2.   His voice was barely audible above the roar of the crowd.

3.   His voice was barely audible above the noise of the generator.

4.   His voice was barely audible above the roar of the crowd.

5.   A final string of debris-spewing explosions walks across the target, audible even above the shrieking wind and the howl of engines.

6.   On the recording, her strong voice is clearly audible above the background voices of the choir.

7.   Several people nearest the stage joined in, their voices barely audible above the low buzz of conversation across the plaza.

8.   That beat will then be audible above the din of the disorganized rest of the audience.

9.   -- was audible above the underground din.