Hi Bakshi,On Wed, 2018-03-28 at 21:37 +0000, Bakshi, Arjun wrote: > 1--- The divider(blue) simply tells me when the signal(orange) power has > increases more than X times w.r.t. older samples. It isn't exact, but good > enough.
No, that's not really the whole picture: it much more tells you about when the older samples were *really* low. y/x grows arbitrarily fast for x->0, but only linearly for increasing y. I've tried to explain why this is a bad idea in my opinion. > 2--- However, the divider output is unbounded, so I threshold it (green). notice that lack of boundedness is definitely a sign of lost information, and you throw away even more by thresholding. > 3--- The threshold block's output holds at 1 until the input drops below a > value, and doesn't give an impulse(green). > It gives a step. A step contains all frequencies. Especially, a step after your [1,-1] filter gives you an impulse. > > 4--- So I do the delay and subtract so that only transition points have > non-zero values(red). Exactly! > > 5--- Of which I want the 1st transition only, which is why I threshold again. Why threshold? sounds like you want something that has a temporal behaviour, not a value amplitude-dependent behaviour > It isn't exact, but gets the job done. I think I've clearly laid out my feelings about that! Best regards,Marcus > >
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