Then there is always the cheap plastic umbrella. It is better than cloth
but not as good as something more substantial like aluminum or
polycarbonate. Also not mathematically correct. It is more fun, though.
http://www.bambooturtle.us/ParabolicMicrophone.html
Greg Clark wrote:
>David,
>
>Parabolic reflectors that have a hard surface absorb less sound than
>materials like cloth. You can make a reflector out of an umbrella and it
>will provide some gain, but cloth is not as good as polycarbonate plastic.=
>Aluminum microwave dishes are a good place to start before you try to
>create your first scratch-built reflector.
>
<<<snip>>>
--
Jim Lee - Bamboo Turtle Studio
http://www.bambooturtle.com
Home of the Rock Nest Monster
http://www.bambooturtle.us/Rock_Nest_Monster.html
/*See Rock Nest Monster on exhibit at Glance Gallery
Through June 14, 2006. M-F 9-6, Sat 10-5
311 W. Martin Street, Raleigh, NC
http://www.glancegallery.com/*/
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