| I guess uncertainty in low frequency measturement has a lot to do with the nature of low frequencies, i.e. if you measure for 1s, you have 1000 "samples" at 1kHz, but only 50 at 50Hz. So what? To get the same statistical precision, you'd have to measure for 20s at 50Hz. Should be obvious, but somehow we tend to forget that frequency is actualy a temporal measure. |