Abstract: A microphone array, comprising N microphones, wherein N is greater than or equal to 3 is provided. The microphones are substantially equiangularly arranged over a circular arc subtending an angle ?, wherein ? is less than or equal to 2?, with the directional axes of the N microphones facing substantially radially outwards. Each of the N microphones have a substantially common directivity function ?(?) defining the directional response of the microphone, wherein ?=0 is the directional axis, and the directivity function ?(?) is arranged such that a sound source in acoustical free field is effectively captured by no more than two consecutive microphones in the array. By arranging the directivity function in this manner crosstalk between non-adjacent microphones can be minimized, which has been shown to improve auditory localization performance.