hi,
i have implemented a polyphase decimation filter with sampling frequency 8.192 mhz and decimation factor 4 and no. of parallel stages 4. But this filter is taking too much processor cycles of my BF533 processor. Since my filter coefficients are symmetric, so I need to optimize it by using the symmetry property. But i have no idea how can i use the symmetry property in the computation.
Please help me.
hi,
i have attached the filter coefficient file. i am using 52 tap lowpass fir filter with sampling frequency 8.192 mhz, decimation factor 4, passband 0.768 mhz, stopband 1.024 mhz.
I need a linear phase response decimation filter. I have made four sections in my code to implement polyphase decimation fir filter.
Is there any way to use the symmetry property of the filter coefficients to save the computation ?