The Design of Adaptive No-Uniform Filter Banks

This paper proposed an efficient filter bank structure for adaptive noise cancellation algorithm, which is non-uniform sub-band decomposition algorithm based on the reference signal . In order to consider the signal approximation reconstruction, the design has adopted a prototype filter additional pre-emphasis filter method, and adopt uniform sub-band decomposition algorithm to carry out the idea of non-uniform sub-band decomposition. The algorithm is simple and easy to achieve, at the same time, as a result of sub-band decomposition depends on the distribution of the noise characteristics, so certain sub-band does not require the use of filtering methods, which not only significantly reduce the computation ,but also improve the performance of adaptive filter convergence.