Fresnel aspherical acoustic mirrors
Phil wrote:
On 24/10/2012 14:37, Brian Gaff wrote:
Erm, not sure this would work very well. Surely even if the
reflectors did work, the head turning could upset it rather.
Its not I think going to be any better than cupping the ear with
one hand. Brian
Perhaps worn as a hat?
Yes - that might be very acceptable for many women.
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