Wuzzat?
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http://www.windtech.com.au/wp-content/uploads/2012/08/13.pdf
Rent a strong fan to duplicate the problem. Run experiments. Make baffles or shields of varying sizes close to the window or nearby.
The pitch is related to the 'cavity' size and wind speed, like a whistle or a bottle with air moving across the top opening.
See what works and what doesn't.
Rent a strong fan to duplicate the problem. Run experiments. Make baffles or shields of varying sizes close to the window or nearby.
The pitch is related to the 'cavity' size and wind speed, like a whistle or a bottle with air moving across the top opening.
See what works and what doesn't.
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