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built-in fir()-function

Question asked by WanneBe on Dec 6, 2016
Latest reply on Jan 4, 2017 by WanneBe

Hey guys,

I am trying to implement a filter with the built-in function „fir()“ from <filter.h>  (Vector-Valued Version) on the ADSP 21489  EZ-Kit-lite Evaluation Board. But unfortunatly it´s not working. I am using Cross Core Embedded Studio version 

The talkthrough works fine, the issue is just when I am trying to filtert the signal. I designed a filter with MatLab and put the coefficients in reverse order into a dat-file.

In the attached Programm I use an allpass to figure out why it is not working in the future the filter shoud cut of at 3 to 4 kHz. I attached the signals I recorded on the oscilloscope into the zip file as well maybe it helps.

Info_sig_in  -> IN1(L)  on Hardware (schematic)

Info_sig_out -> OUT1(L)

Info_sig_LP -> OUT1(R)


May be someone can help me with this?


Thank you!