Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Variable Threshold and Dynamic Step Size Based Active Noise
  Control System for Improving Performance   Several approaches have been introduced in literature for active noise
control (ANC) systems. Since FxLMS algorithm appears to be the best choice as a
controller filter, researchers tend to improve performance of ANC systems by
enhancing and modifying this algorithm. In this paper, modification is done in
the existing FxLMS algorithm that provides a new structure for improving the
tracking performance and convergence rate. The secondary signal y(n) is dynamic
thresholded by Wavelet transform to improve tracking. The convergence rate is
improved by dynamically varying the step size of the error signal.

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The categories of this paper are: comp-gas
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ