Fixed point FIR filters: evaluating performance (#0007)
Channel: Digital Signal Processing
Date: 2013-11-07

The performance of such a filter can be evaluated in MATLAB/OCTAVE by scaling and quantising the impulse response and doing a Fourier Transform on it. What cannot be tested properly in MATLAB/OCTAVE is the actual filtering operation and should be rather tested in C as shown before because MATLAB/OCTAVE do not implement their fixed point variables as two complement.