A character listens, and the player rolls a d20. A low roll is best. Player tells me what they rolled, and I will tell you what your character hears.

Loud noises will be heard automatically.

Number of characters that can         door
listen at a door                                   width
4                                                   10'
3                                                    8'
2                                                    6'
1                                              3' or 4'