Improve numerical stability MeanStd

[maet3608]

Current implementation is simplistic and numerically brittle.
See https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance

[f0k]

Came here via my arxiv RSS feed and noticed this issue -- please feel free to borrow my implementation from https://github.com/f0k/ismir2015/blob/master/experiments/znorm.py (including the license text).

[maet3608]

Great, thank a lot ; ) Stefan

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On Tue, Aug 22, 2017 at 9:09 PM, Jan Schlüter ***@***.***> wrote: Came here via my arxiv RSS feed and noticed this issue -- please feel free to borrow my implementation from https://github.com/f0k/ ismir2015/blob/master/experiments/znorm.py (including the license text). — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AYUAAHs5hTgNF6dZLi2UJ2P9MkAyK0bwks5sarbVgaJpZM4NMy0g> .