A Comparative Study of Adaptation-Mode Control for Generalized Sidelobe Cancellers in Human-Robot Communication

This paper presents a comparative study of adaptation-mode control (AMC) for generalized sidelobe cancellers in human-robot communication. Performance of recently proposed two AMC structures, namely, NBM-SLBM (nested blocking matrix-symmetric leaky blocking matrix) and M-SLBM (multiple symmetric leaky blocking matrix), are evaluated by computer simulations and in a real environment. In the computer simulations, it is shown that M-SLBM exhibits superior performance to NBM-SLBM. However, in the real environment, the performance of M-SLBM is degraded. This degradation comes from unexpected tonal interference in a frequency range covered by an SLBM, leading to errors. An appropriate selection between NBM-SLBM and M-SLBM is necessary based on the environment.