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22.09.2008 Angelo Farina
Background noise
§If the background noise is superposed to the
impulse response, the
previous method already takes care of it, and the MTF values are measured correctly
§However, in some cases, it is advisable to
perform a noise-free
measurement of the IR, and then insert the effect of the noise with the following expression:
nThis makes it possible to measure a
“clean” impulse response, and then to perform separately the signl an
noise recordigs