Fig. 2From: Spherical harmonic covariance and magnitude function encodings for beamformer designRBFs with design parameters in Fig. 1 are expanded at (θ=0, ϕ=0) along SH bases in Eqs. 9 and 10 upto maximum truncation-order P. Their expansions are evaluated over the domain of |θ|≤π, ϕ=0 (elevation) in Eq. 2 and the root mean square errors computedBack to article page