I am currently working on Audio Loopback program in BF526. We have recorded audio samples in a DAT file in Signed 32 bit format.When I tried to implement a DC filter to in form of a Difference equation such as; y[n] = x[n]-x[n-1] + 0.99*y[n-1] where x are the recorded samples and y are the processed samples. When we run the program to play y[n] we are getting noise. I wanted to know if this implementation is correct. Could you please help me out. Thanking you in advance.