If the area smells like food and there is a radio playing/human scent (`marking'), etc. . It does not take long for the raccoon to associate one with the other and seek it out, instead of being daunted and frightened away. "Ah, Easter Egger tatare, and Howie Hanson's 2nd Romantic Symphony (or Tone Loc or Hank Snow or Black Flag) to entertain! As I tear into this fine meal..."
We use a baby monitor in the coop. Not only do we know the chook language very well, it transmits the roo alarm function, in lo-fi, as a bonus. Chooks do not sleep all night (turkeys sleep like the dead), if we hear the leaves rustling AND the chooks growling, we dang well know something wicked this way comes. Heard opossum's mating yowl (higher pitched and lower volume than coons) over the monitor about an hour ago (only one girl whined - not much impressed). They were quickly `treed' and retired.
The turkeys do like classical.
Music to my ears are raccoon claws getting worn down, `percussing' on plenty of hardware cloth.
ed:sp