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6th January 2007, 12:49 AM
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diyAudio Member
Join Date: Sep 2006
Location: Pleasant Hill, CA
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Uni directional mic - help needed
Hi everybody;
I never saw any uni directional mic construction and desided to build one to pick up acoustic guitar sound. I took a copper tube 1/2 inch diameter, 12 inch length, glued an electret mic from one side. The result was sawl-like frequency curve, however it was very directional. I decided to damp resonances and drilled some holes. Teeth became less sharp, frequencies shifted up, but it lost sharp direction pattern. What I did wrong? Everything? How do people build uni directional microphones without comb-filter effects, with flat frequency response? Here is my project: 
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If I disappear suddenly, that means I finally created a time machine and pushed wrong button that brought me to Stalin's Russia. In any experiment any result is the result. Even if it is negative. |
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