System identification using LMS based on microphone response (secondary path)

Discussion in 'Automotive Electronics' started by radhikakrishnan, Mar 17, 2016.

  1. radhikakrishnan

    Thread Starter New Member

    Mar 16, 2016
    Hi all,
    I am doing an implementation of Filtered X-LMS for active noise cancellation in lab set up. I do not have a directional speakers and high efficient mic. I have simple speakers and a jack mic. Will I be able to carry out the experiment efficiently (with 10dB noise reduction)in matlab simulink?
    I have modelled the problem in Simulink and connected the speakers and mics. I also tried out secondary path estimation. But by using the acoustic signal captured by the mic for processing, the LMS filter doesnot converge. Should I do any additional processing such that mic capture an accurate acoustic output so that LMS works fine for secondary path identification.