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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

What's the FT of the input minus the output?

I see.

I am still curious what the Fourier transform (the theoretical FT)
of the difference,


(the input, 1/44100 second length square pulse)


(the output of it by a typical DAC such as Benchmark DAC 1 in Fig. 1 in the Stereophile web page I linked before)



How much content does the difference have below 20kHz?

Edits: 03/13/12

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