Higher order differential-integral microphone arrays.
This paper develops theory to design higher order directional microphone arrays. The proposed higher order designs have similar inter sensor spacings as traditional first and second order differential arrays. The Jacobi-Anger expansion is used to exploit the underlying structure of microphone signals from pairs of closely spaced sensors. Specifically, the difference and sum of these microphone signals are processed to design the novel directional array.
Applied Signal Processing Group, School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra ACT 0200, Australia. thushara.abhayapala@anu.edu.au
Thushara D
TD
Abhayapala
Aastha
A
Gupta
D000162:Acoustics / Q000295:instrumentation*; D004867:Equipment Design; D008962:Models, Theoretical; D009622:Noise; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D014159:Transducers