Effect of Secondary Path Lengths on the Performance of FxLMS and Virtual Sensing Technique Based ANC System

  • Manoj Kumar SharmaEmail author
  • Renu Vig
  • Gagandeep Sahib
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 524)


With the urbanization, exposure of mankind to the noise is increasing day by day leading to many health issues. For low-frequency noise reduction, active noise control system is widely applied in many applications. In the present paper, the effect of different secondary path lengths in FxLMS and virtual sensing technique based ANC system is studied. The virtual sensing technique based ANC is applied in the cases where it is not feasible to place the error microphone physically at the desired location. The filter coefficients of secondary path of ANC system are measured experimentally for the three different filter lengths, k (i.e., k = 64, 128, and 256) using Texas Instruments TMS320C6713 processor in the semi-anechoic chamber. The performance of ANC system with different filter lengths is analyzed in the terms of residual noise, signal-to-noise ratio, computational load, and error plots. The comparison suggests that secondary path of different filter lengths suits for FxLMS and virtual sensing technique based ANC systems.


Active noise control Virtual sensing technique FxLMS Secondary path filter length Coefficients 



The work in this article is supported by Special Assistance Programme (SAP) of University Grants Commission (UGC), New Delhi [grant no. F.3.32, 2012].


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Manoj Kumar Sharma
    • 1
    Email author
  • Renu Vig
    • 2
  • Gagandeep Sahib
    • 2
  1. 1.Electrical and Electronics Engineering DepartmentUIET, Panjab UniversityChandigarhIndia
  2. 2.Electronics and Communication Engineering DepartmentUIET, Panjab UniversityChandigarhIndia

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