A Subband Approach to Wave Domain Adaptive Filtering

Wave Domain Adaptive Filtering (WDAF) is a recently developed technique applied to systems based on Wave Field Analysis/Synthesis. It is used to reduce the computational complexity of adaptive algorithms employed in these scenarios, where the number of involved loudspeakers and microphones is particularly high. In this paper we will present a streaming based frame-by-frame implementation of WDAF and we will show how its subband extension, through a cosine modulated uniform filter bank, lead to an improved convergence rate and reduced mean square error.