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 188.8.131.52.
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?