Film-Tech Forum ARCHIVE: Mic placement

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Topic: Mic placement

Christopher Seo
Jedi Master Film Handler

Posts: 530
From: Los Angeles, CA
Registered: Jun 99

posted 06-20-2003 12:51 AM

Random incidence microphones do not have a flat response to sound in all directions, but rather are designed to have a flat response on average when the sound is coming from random directions. The face of the microphone creates direction-dependent pressure disturbances which affect the higher frequencies. This is why, for example, ANSI specifies a particular degree offset when making free-field measurements with random incidence microphones... it compensates for the directional variations since in a free-field the direction is not random.

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