AnsweredAssumed Answered

NLMS block in sigmastudio

Question asked by sss36 on Jul 31, 2013
Latest reply on Aug 1, 2013 by BrettG

Hi,

 

I am working on ANC project. I am trying to implement FxNLMS on ADAU1446 evaluation board. I am thinking of using NLMS block available in sigma studio to estimate the secondary transfer function offline. To estimate this secondary transfer function ideally we need white noise generator but for the timing I am using sine wave with freq 500Hz. The block diagram is as follows

 

nlms.jpg

 

This design uses ADAU1446 dsp core internal coefficients as seen in compiler window. I am just wondering Is there any way I can access these FIR filter coefficients?

 

My second question is how can I access error signal from NLMS block?

Outcomes