Hai,

I am using FIR Accelerators in my DSP code to save the MIPS along with CORE FIR. I have found some differences in outputs of CORE & ACC with same input. This was happening due to the order of convolution operation was different in CORE & ACC.

After that I have done some analysis by taking MATLAB output as reference to both CORE & ACC. I have attached the file here.

From the file I am not able to judge the exact bit deviation wrt MATLAB. Since it is varying based on the input frame length.

The question is how many bits deviation will occur wrt MATLAB output for both CORE & ACC outputs. Please provide any theoritical estimations if available.

Hi,

I looked at your attached excel file. Could you please provide the input data, the Matlab and SHARC DSP codes you used to generate the output data?

Thanks,

Ning