# Forum: DSP system identification with lms using microphone

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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

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.

: Edited by User

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