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Ground Attenuation    1/1 ¸

Strutt|Environmental Noise|CONCAWE Ground Attenuation inserts a ground attenuation correction (dB) into the active row of the worksheet. Note this correction is only valid for source-receiver distances greater than 100 m.

Ground effects, `K_3`, are calculated as a function of distance for each octave band where:

63 Hz: `K_3 = 33.4 - 35.04log_10 d + 9.159(log_10 d)^2 - 0.3508(log_10 d)^3`

125 Hz: `K_3 = 8.96 - 35.8log_10 d + 20.4(log_10 d)^2 - 2.85(log_10 d)^3`

250 Hz: `K_3 = -64.2 + 48.6log_10 d - 9.53(log_10 d)^2 + 0.634(log_10 d)^3`

500 Hz: `K_3 = -74.9 + 82.23log_10 d - 26.921(log_10 d)^2 + 2.9258(log_10 d)^3`

1 kHz: `K_3 = -100.1 + 104.68log_10 d - 34.693(log_10 d)^2 + 3.8068(log_10 d)^3`

2 kHz: `K_3 = -7 + 3.5log_10 d`

4 kHz: `K_3 = -16.9 + 6.7log_10 d`

References:


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