M given project to do noise analysis of pico ammeter ADC output. here the input is 1pA DC signal. for which i have nearly 100000 output samples. sampling rate is 3.5Kps. these readings have error percentage nearly 0.178%. So i need to do its noise analysis like i have to detect which types of noises it contain? separation of those noises and actual signal and their plots. frequency ranges of the noises etc. Initially i need to do this in matlab later in VHDL. i dont understand how to proceed. how to do noise analysis? means which parameters we should analyse and how??