This is the 8685th most frequent French word.
audibles
Capable of being heard.
In this sentence, 'audibles' is used as an adjective describing the whispers, conveying that they could be heard faintly.
Les murmures étaient à peine audibles dans la pièce.
The whispers were barely audible in the room.
Here, 'audibles' again functions as an adjective, showing that the birds' cries were distinguishable amidst the background noise.
Lors de l'orage, les cris des oiseaux étaient audibles malgré le bruit.
During the storm, the birds' cries were audible despite the noise.
'Audibles' serves as an adjective explaining that his softly spoken words could not be heard clearly.