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As an instructional aid, and / or for professional use, I
propose to mount LED(s) on microphones and/or
loudspeakers, where the visible polar pattern of the
match the polar sensitivity or dispersion pattern of the
For Instance, an omnidirectional mic would
frosted LED uniformally visible from any direction, while
cardioid mic would feature a directional LED matching
polar pattern of the mic. Similarly, figure-8 mics would
show the polar lobes from each side, but none from the
Loudspeakers would be similarly enhanced, and either
could be equipped with frequency-selective lighting (red
for low frequency omnidirectionality, through green,
yellow, blue, etc., matching the frequency-dependent
response of the transducer.)
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||A scanning laser would be better.
||This sounds like a very good idea.
||Hang on a sec. Wouldn't all those LEDs block the
||// Wouldn't all those LEDs block the sound? //
||Two words: "One Direction"
||As long as the LEDs are small compared to the
wavelength of the highest frequency of interest
(20kHz, ~1.7cm) there should be no significant