4 accepted papers
Conventional steerable differential beamformers are usually only applicable to microphone arrays with regular planar geometries. Recent years have seen the interest in the design of steerable differential beamformers for microphone arrays with an arbitrary planar geometry. However, the existing stee…
Recently, we have proposed an algorithm in [1] for the design of real-valued wideband beamformers using adaptive-array-theory-inspired weighted least squares, which can achieve precise control of wideband beampattern. In practical applications, however, the robustness issue which is particularly rel…
In our previous work, we have revealed the phenomenon of mainlobe orientation reversal (MOR) suffered by the first-order steerable differential array (FOSDA) due to microphone phase errors. However, only a deterministic analysis is conducted in that work. To provide useful guidance for practical FOS…
Directivity factor (DF) is a fundamental performance measure of microphone arrays. This paper studies the DF of the first-order steerable differential array (FOSDA) whose response is constructed by a linear combination of monopole and two orthogonal dipoles using a four-element square array. The DF…