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DSP programming
I suggest that you should go to www.analog.com, analog have well programable and very usefull DSP-s, moreover there's lots of sources, userguides and documents from newbies to experts.
you just have to implement the following:
y[n] = ax[n] + bx[n − τ] + cy[n − τ]
Here is some type of comb filter (depends on the feedback and sum or difference)
**broken link removed**
I hope this will help you (sigma-delta DAC):
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If you'd like a more complex solution here is the transfer funciton of a second order sigma-delta:
H(z) = 1/z * (2 - 1/z)
If your signal is at a frequency f, first you have to digitally oversampling your signal to k*f (e.g...
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