>     some months ago Olin posted the formula that changed DSP world: :)
>         Filt <-- Filt + (New - Filt)*FFrac
>
>     Saddly, my 8 bit implementation have a problem that I can't surpass:
>         filt = filt + ((sig16)new - (sig16)filt) / 2;
>
>     The value never goes to 255 because of integer roundings:
>         filt = 254 + (255 - 254) / 2;
>         filt = 254 + (1)/2;
>         filt = 254;
>
>     There's a way to change this? I've tried to raise the resolution
making:
>         filt = filt + ((sig16)new*2 - (sig16)filt*2 + 1) / 4;
>
>     But got same results because:
>         filt = 254 + ((sig16)255*2 - (sig16)254*2 + 1) / 4;
>         filt = 254 + (510 - 508 + 1) / 4;
>         filt = 254 + (510 - 508 + 1) / 4;
>         filt = 254 + (1) / 4;
>
>     Please, someone help me!!!

It helps to have enough fraction bits so that 1/FFrac is not expressed as 0.


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