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\end{verbatim}  using the following formula from the lecture slides  $$P_{BF,\theta} = \dfrac{(C_\mathrm{d}^{-1} L_\theta)^T}{L_\theta^T C_\mathrm{d}^{-1} L_\theta},$$  where $L_\theta$ is the lead field gain  vector of channel for source point  $\theta$. We wanted to visualize the source estimates as a function of time. We achieved this with the following script: