The Use of Non-Ideal Microphones in Directional Arrays
In some applications an array of omnidirectional or cardioid microphones offers advantages over an ultra-directional microphone, such as increased sensitivity, improved signal-to-noise ratio, and electronic control of beam direction, focusing, and sidelobe level. It is likely, however, that there will be variations in the amplitude and phase response of the individual microphones, especially if low-cost elements are used. Tolerance theory is used to show that, for many applications, these errors do not significantly degrade the directivity of the array. Performance limits are given, and experimental results are presented to support these findings.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.