“…where * ( ) ⋅ is the complex conjugate of the signal. There are several adaptation algorithms, including LMS (Borio et al, 2008;Wendel et al, 2016), FLL (Gamba & Falletti, 2018), Kalman filtering (Kang et al, 2018;Panchalard et al, 2006), and any of these aided with machine learning (Abbasi et al, 2020). However, this article focuses on FLL-based methods, as they are simple to use with the LBCA.…”