Fig. 4From: Robust design of Farrow-structure-based steerable broadband beamformers with sparse tap weights via convex optimizationArray response of the robust FSBB using the WCP optimization in the presence of microphone mismatches, where the user-defined parameter ε is equal to 1.74. The steering direction ϕ d =60°. Average of 100 Monte Carlo trials. a 3D view of the array response. b Side view of the array responseBack to article page