Beschreibung:
This paper reports on an investigation directly comparing the measured wind noise and detected acoustic signals for two types of co-located infrasonic wind noise reduction barriers. The first type is a set of cylindrically shaped wind fence enclosures and the second type is a set of 2.0 m diameter semi-porous fabric domes. The fence configurations included variations to the height, width, and number of filtering layers. Forty and fifty-five percent porosities were used for each of these configurations. Wind Noise reductions for the domes and the 5 m diameter fence are comparable at low wavenumbers, while the reductions for the 5 m fence is better at high wavenumbers. The porous domes and the 6 m high wind fence achieve comparable maximum reduction levels; however, the 6 m high fence mitigates noise for a broader wavenumber range. The 10 m diameter fence achieves the best reduction levels overall, while the porous domes are better at mid-range wavenumbers. Additional filtering layers improve all reductions and show the greatest improvement for the fences and the higher porosity dome.