ABSTRACT
A microphone array may be considered to be a set of microphone elements arrayed in space
whose outputs are individually processed and summed to produce a given output. In a basic
sense, an early cardioid microphone created by summing separate pressure and gradient
elements may be thought of as an array, but this is not what we have in mind. The arrays and
techniques discussed here normally use multiple elements to achieve a target directional
response that may be specific for a given application. In other cases, signal processing may be
applied to single microphones, or microphone channels, to enhance performance in some
unique respect.
