Effect of White Noise for Online Secondary Path Modeling and Noise Reduction in Multichannel ANC System
Main Article Content
Abstract
In practical cases for active noise control (ANC), the secondary path may be time varying .For these cases, the secondary path should
be estimated online. Several approaches have been introduced for online secondary path modeling (OSPM) in single- channel feed forward ANC
systems .In these systems additive random noise as a training signal is injected to achieve secondary path modeling during online operation .This
paper investigates the issue of reducing noise and secondary path modeling in multichannel active noise control by not continually injection of
white noise during system operation. The existing methods in multichannel have concentrated on online secondary path modeling. This paper
uses the advantages of white noise with larger variance to model the secondary path, but the injection is stopped at the optimum point to increase
the performance of the system. It is shown that the proposed method has better performance in reducing residual noise and also it has better
convergence rate in online secondary path modeling in multichannel ANC system.
Â
Keywords: Multichannel active noise control; online secondary path modeling (OSPM); Adaptive filter
Downloads
Article Details
COPYRIGHT
Submission of a manuscript implies: that the work described has not been published before, that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication, the authors agree to automatic transfer of the copyright to the publisher.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
- The journal allows the author(s) to retain publishing rights without restrictions.
- The journal allows the author(s) to hold the copyright without restrictions.