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Gear / Technical Help => Microphones & Setup => Topic started by: jeromejello on June 15, 2005, 06:22:07 AM
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i have a question about mic placement, i hope trying to explain this it makes sense... whenever you see the polar pattern for mics, whether for cards, hypers, subs, etc., what is the spacial / directional relation of the mic to that polar patter?
i think that i sorta know and understand that the mic is considered to be pointed towards the source in the polar graphs. but is there a more 3 dimensional rendering on the graph (which i can only imagine to have limitations on). the reason i am asking is b/c you sometimes see omnis (which i undestand have a more uniform polar pattern) pointed up or nondirectional.
basically, i am kinda asking, are the polar patterns spherical to an extent and would directional caps decrease the 3-d model.
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If you're looking at a typical polar graph (see the DPA graphs for example), you can imagine the entire graph being rotated about a line drawn from top to bottom of the image - so yes, the patterns are 3-D. I'm not sure what you're asking in your second question about decreasing the 3-D model, though.
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ok, i found this...
http://taperssection.com/index.php?topic=795.0
which sorta confirms some of my thoughts... but i still dont quite understand why i couldnt just point a cardiod pattern mic at the ceiling and get a decent recording (i know from my ears i cannot, but the spherical model suggests that i should be able to get a majority of the freq captured as long as i was in a close proximity to the source)
again i am not sure if i am even knowledgeble enough to explain the question i am asking... thanks for the (((space))) ;D
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it does, and it also explains clearer why i can point omnis 'up' lilke in the j-disc design.
thanks moke +t
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again thanks for clearing that up...
new mantra - alway point towards source ;D