Exploring an efficient approach for active noise control systems with online secondary path modeling

Akihisa Oishi, Muhammad Tahir Akhtar, Wataru Mitsuhashi

Research output: Contribution to conferencePaperpeer-review

Abstract

In this paper, we explore a new approach for controlled injection of probe noise for secondary path modeling (SPM) in the feed forward active noise control (ANC) systems. The existing approaches employ a single adaptive FIR filter for SPM in ANC systems. In the proposed approach, a separate filter temporarily holds a replica of the tap-weights of the SPM filter. Furthermore, a cost function - on the basis of difference of error powers from the two filters - is evaluated for keeping or suspending the injection of the probe noise. If the acoustic characteristics are changed in the secondary path after suspending the injection, outliers in the error signal from the SPM filter are detected for restarting the injection. Numerical simulations show that the noise-reduction performance is improved by introducing the proposed approach for the ANC systems.

Original languageEnglish
Pages825-833
Number of pages9
Publication statusPublished - Dec 1 2011
Externally publishedYes
EventAsia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011 - Xi'an, China
Duration: Oct 18 2011Oct 21 2011

Conference

ConferenceAsia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011
CountryChina
CityXi'an
Period10/18/1110/21/11

ASJC Scopus subject areas

  • Information Systems
  • Signal Processing

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