Fig. 1
From: Spherical harmonic covariance and magnitude function encodings for beamformer design
Solid lines show RBFs with FWHM \(\frac {2 \pi }{3}\) and bandwidth terms ℓ that satisfy \(K_{\nu }(\Theta = \frac {\pi }{3}, \ell) = \frac {1}{2}\). Dashed lines show RBFs with \(\ell _{\nu } \left (\Theta = \frac {\pi }{3}, \, T_{{dB}} = -12\right)\) for Eq. 19. Smaller ℓ and larger ν result in more localized covariance functions