Petruccelli L.T.D of North America says;
Out of Site Really is Out of Mind - When putting up certain structures,
like fences, there is an actual measurable reduction in noise, but
because of the way sound waves travel, plants, trees, and hedges don't
actually provide the same benefit. However, it doesn't seem to matter
because they provide a "perceived reduction of noise!" How about that!
It's all due to something called, psycho acoustics. The visual stimulus
of the hedge or tree actually tricks the brain. So, when all else fails,
try improving the view rather than blocking it, and you might be
surprised at the result!
