put two microphones in the input of Filtered-X LMS

How can I put two microphones in the input of Filtered-X LMS Adaptive Noise Control Filter and actually try noise removal?

Here's an example:

filtered x lms

Answer 1

[Sravan Janamaddi]

Do you mean a 2-channel input (2 microphones)?

[milad habibi]

Yes, exactly. I want to put two microphones in the input like this. One microphone for noise and one microphone for main sound.

[Sravan Janamaddi]

Hi Milad,

This is similar to the LMS except that the weights updated will address the secondary path too. If I am not wrong you are trying to emove noise (assume first mic) from the main source (which has desiredcontent and the modified noise) (second mic ).

I think this way should work for you:

1. x(n) is your second mic (main source).
2. fx(n) is your noise mic.

Please try this and let me know.

Thanks,

Sravan