Comparison of different adaptive algorithms for stereophonic acoustic echo cancellation

In this paper, different adaptive algorithms for stereophonic acoustic echo cancellation are compared. The algorithms include the simple LMS algorithm and two specialized two-channel adaptive algorithms. Due to the high calculation complexity needed in stereophonic acoustic echo cancellation applications, the time domain algorithms are applied in a subband structure. The comparison include aspects as convergence rate, calculation complexity, signal path delay and memory usage. Real-life recordings are used in the evaluation.