There's many others - phase shifts, quality of the analogue filter etc, and more depending on the specific sampling technology. The fact that the analog circuitry which brings the signal to the A/D converter may present different electrical impedance to different frequencies,with certain frequencies being a little bit "reduced" (impedance is a kind of "resistance", but for alternate current, check out the excellent primer here by Hugh Robjohns) Īlso "boundary conditions" like the circuit operating temperature (both room-dependent, but also voltage-dependent) can affect the signal detection.ĭifferent designs will attempt to compensate for these physical effects in different ways (usually the better they are, the more costly, with the inevitable law of diminishing returns creeping in).
0 kommentar(er)
