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
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    0
    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.

    Regards,
    Radhika
     
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