The question is, in my opinion, a beautiful fit for DSP. But, it is old, with an accepted answer, and 2 years inactive.
I am not saying that I will go hunting for questions like this, but sometimes, looking and browsing around, I will find them. I flag new questions regularly (especially when I just discovered DSP) when I run across them, but flagging something so old, which seems comfortable on SO makes me a little... uncomfortable. So, I'd like some advice on how to proceed :)