Is this feasable?

[Wittgenstein]

Well yes, but sample 749 (f1) will a mix of 50% from a filter that passes f1 and a 50% from filter that passes both f1 and f2 (however there is no f2 present at this position yet)

So hopefully you'll still get 100% of f1 through at this point
 

Yeah, but I was thinking more generaly now... If the spectras overlap and have different filters you will get something strange (50% from the output of filter 1 and 50% from the output of filter 2).

/W

[Karlos]

@Wittigstein...

Been a while but I thought you might be interested to know that the idea sort of worked :-)

One thing I overlooked was the FIR filter algorithm has a N-1 latency in that for a 63 tap filter, you get 63 less samples out than went in - bit of a problem for the window length.

Some small corrections in the overlapping sorted that out, but I dont think the FFT is too accurate on smallerwindows..

Maybe I'll take another look later, right now I dont have the time  :-)