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I guess you want to interpolate 2 signals separately, if that is you case, a simple algorithm is to use the fast fourier transform. Lets say you have your signal in x of length N, and you wish a length M data. Then, do
1. X=fft(x);
2. y = real(ifft([X zeros(1,M-N)]);
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No, I want to interpolate them together. So if 1st signal goes from zero to 1 at time A and second signal does the same thing at time A+deltaA. The output interpolated signal will start to rise at time A and reaches 1 at time A+deltaA. I'm trying to smooth the edges of these signals.
First you just add extro zero and then pass through a low pass interpolation filter. Check the multirate signal processing in Google to find more information.
If you hook up two drivers that are driving youro signals to the same node, the waveform on the net will be an 'interpolated' one. This technique is used in high performance clock network design. The only thing that you need to watch out for is that deltaA be sufficiently small, since you will have a short-ciccuit path between power and ground while first driver is driving a '1' and the second a '0'/
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