Leading Element Dichotomous Coordinate Descent Exponential Recursive Least Squares Algorithm for Multichannel Active Noise Control

Low Complexity and High speed in Leading DCD ERLS Algorithm

Adaptive algorithms lead to adjust the system coefficients based on the measured data. This paper presents a dichotomous coordinate descent method to reduce the computational complexity and to improve the tracking ability based on the variable forgetting factor when there are a lot of changes in the system. Vedic mathematics is used to implement the multiplier and the divider in the VFF equatio...

Recursive least-squares algorithms with improved numerical stability and constrained least-squares algorithms for multichannel active noise control systems

1.0 Introduction This paper deals with the convergence of adaptive FIR filters used for multichannel active noise control (ANC) systems [1]. In a recent paper [2], recursive least-squares (RLS) algorithms and fast-transversal-filter (FTF) algorithms were introduced for multichannel ANC. It was reported that these algorithms can greatly improve the convergence speed of ANC systems, compared to a...

Multichannel affine and fast affine projection algorithms for active noise control and acoustic equalization systems

In the field of adaptive signal processing, it is well known that affine projection algorithms or their low-computational implementations fast affine projection algorithms can produce a good tradeoff between convergence speed and computational complexity. Although these algorithms typically do not provide the same convergence speed as recursive-least-squares algorithms, they can provide a much ...

New multichannel modified filtered-x algorithms for active noise control using the dichotomous coordinate descent method

Recursive least-squares algorithms with good numerical stability for multichannel active noise control

Some recursive least-squares algorithms for multichannel active noise control have recently been introduced, including computationally efficient (i.e. “fast”) versions. However, these previously published algorithms suffer from numerical instability due to finite precision computations. In this paper, numerically robust recursive least-squares algorithms for multichannel active noise control sy...