ACOUSTICS · MAEKAWA + EN 1793-2
Acoustic fence calculator
Pick the noise source, the fence build-up and the geometry — the tool returns the insertion loss in dB(A) and the perceived loudness reduction. Built on Maekawa thin-barrier diffraction (1968) bounded by the panel transmission loss per EN 1793-2.
Scenario presets
Geometry (metres)
1.8 m
8.0 m
4.0 m
1.5 m
Insertion loss
Without fence
67.9 dB(A)
With fence
61.5 dB(A)
Insertion loss
−6.4 dB
Clearly audible improvement
Diffraction (Maekawa): 6.4 dBTransmission ceiling (R_w): 12 dBFresnel N: 0.22
METHOD
Maekawa (1968) diffraction over a rigid thin barrier, Fresnel number at 500 Hz reference. Insertion loss is bounded by the panel transmission ceiling (R_w − 5 dB) per EN 1793-2 flanking guidance. Source levels are EU residential survey medians; site-specific noise levels can deviate ±5 dB. Outputs are first-order estimates for layout decisions, not a substitute for in-situ acoustic measurement.
Related
ACOUSTIC-GRADEVisioMod Bosco — WPC + aluminium privacy fenceHalf-packed slat geometry hits 12–18 dB insertion loss at typical road-fence distancesTRY NEXTWind & snow load calculatorEN 1991 site qb / sk readout vs each fence product's structural ratingREFERENCEEN 1793-2 acoustic-barrier standardSound-transmission classification for noise-reducing devices on roads · CEN / European Committee for Standardisation
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