Forum: DSP system identification with lms using microphone

Author: Radhika Krishnan (Company: nest) (radhikakrishnan)
Posted on:

Rate this post
0 useful
not useful
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.

: Edited by User


Entering an e-mail address is optional. If you want to receive reply notifications by e-mail, please log in.

Rules — please read before posting

  • Post long source code as attachment, not in the text
  • Posting advertisements is forbidden.

Formatting options

  • [c]C code[/c]
  • [avrasm]AVR assembler code[/avrasm]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]

Bild automatisch verkleinern, falls nötig
Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.