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 language | English |
|---|---|
| Pages | 825-833 |
| Number of pages | 9 |
| Publication status | Published - Dec 1 2011 |
| Externally published | Yes |
| Event | Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011 - Xi'an, China Duration: Oct 18 2011 → Oct 21 2011 |
Conference
| Conference | Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011 |
|---|---|
| Country | China |
| City | Xi'an |
| Period | 10/18/11 → 10/21/11 |
ASJC Scopus subject areas
- Information Systems
- Signal Processing