Sigmund~ : How does it work?

dempsey's icon

Hey everyone!
I was just curious if anyone knew exactly how the external object Sigmund~ functions.
I understand that it can continously detect pitch and amplitude but does anyone have any insight into what Frequency Detection Algorithms it uses or anything of the sort?

kleine's icon

Not sure what method sigmund~ uses but here's some good general info

https://ccrma.stanford.edu/~pdelac/154/m154paper.htm