Polar pattern for a miniature lapel mic like the Shure WL50

FAQ #3229 Updated October 30, 2008

Question:

Why is polar pattern diagram not included on the data sheet for a miniature lapel microphone, like the Shure WL50?

Answer:

The Shure WL50 is a miniature omnidirectional microphone. Its largest dimension is smaller then the 20 kHz acoustic wavelength. Therefore, in the free field, the polar pattern is a textbook perfect circle. This applies to all professional quality omnidirectional microphones having such small dimensions.

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