Table 2. Distance Correction Factors  


Latest version.
  • If the distance between the microphone location point and the microphone target point isSound level
    correction factor dB (A)
    26-29 feet-7
    29-32 feet-6
    32-35 feet-5
    35-39 feet-3
    39-43 feet-2
    43-48 feet-1
    48-58 feet0
    58-70 feet+1
    70-83 feet+2
    83-99 feet+3
    99-118 feet+4