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Basic Electronics » Unidirectional microphones

May 26, 2010
by lcruz007
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Hello,

Does someone knows something about unidirectional microphones that can fit on a breadboard?? Where can I find them? I cannot find anything available I can use for a project...

Thanks in advance.

May 27, 2010
by Ralphxyz
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Not knowing anything about microphones is a omni-directional microphone unidirectional?

If so try Mouser page 1818 in their catalog, or search their web site for "OMNI-DIRECTIONAL ELECTRET CONDENSER MICROPHONE ELEMENTS" part number 254-05KP0B-RD.

Not that I would probable ever need to know but what is a unidirectional microphone any way?

What is your project?

Ralph

May 27, 2010
by lcruz007
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Hi,

I need an unidirectional mic so I can obtain sounds in a 180 degrees range (or maybe less), and not hear background noise. I am working on a project similar to a sonar application.

May 27, 2010
by Ralphxyz
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Couldn't you put a cone around a mike and make it unidirectional?

Ralph

May 27, 2010
by mongo
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Look for them with the cardioid pattern description. They are somewhat directional. To make them even more directional, a parabolic reflector like a "big ear" mic works well. There is also what is called a "shot gun" mic but it takes a lot of work, trial and error to get one to work right.

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