Cited 11 times since 2011 (0.8 per year) source: EuropePMC The Journal of the Acoustical Society of America, Volume 130, Issue 6, 1 1 2011, Pages 3827-3837 Comparison of the measured and theoretical performance of a broadband circular microphone array. Parthy A, Epain N, van Schaik A, Jin CT
The design and construction of a circular microphone array (CMA) that has a wide frequency range suitable for human hearing is presented. The design of the CMA was achieved using a technique based on simulated directivity index (DI) curves. The simulated DI curves encapsulate the critical microphone array performance limitations: spatial aliasing, measurement noise, and microphone placement errors. This paper demonstrates how the non-regularized DI curves for a given beamforming order clearly define the bandwidth of operation, in other words, the frequency band for which the beamformer has relatively constant and maximum directivity. Detailed and comprehensive experimental data that characterizes the CMA beamformer are also presented.
