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      CommentAuthorcelan
    • CommentTimeOct 30th 2009
     (4833.61)
    This is old, and similar to my other posts:
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      CommentAuthorV
    • CommentTimeNov 3rd 2009 edited
     (4833.62)
    Yay! This thread is fun.

    So, someone already mentioned system dynamics, how about a more specific instance of loops for dynamic processing:
    Recurrent networks (of which there are a large variety) are based on multilayer perceptrons (a fairly basic artificial neural network) with the addition of recurrent connections (surprise!). Recurrent connections are just feedback loops, and their presence allows for processing of certain kinds of spatial or temporal data.
    Woo!

    And as a follow up to the mention of the ever fascinating work of Diana Deutsch, I'm always thought the tritone paradox was pretty cool.
    Particularly this detail of it:
    Why do people orient their maps of the pitch class circle in different ways? Deutsch conjectured that the answer might lie in the speech patterns that we hear.
    ...
    So on the basis of these observations, Deutsch (1991) compared two groups of subjects. Those in the first group had grown up in California, and those in the second group had grown up in the south of England. These two groups tended to differ in how they heard the tritone paradox: Frequently when a Californian subject heard a pattern as ascending, a subject from the south of England heard the identical pattern as descending, and vice versa.


    I think that concept is fascinating! What you are exposed to in terms of spoken language has an effect on your perception of musical sounds.
    Ummm.. but anyhow this nicely connects with loops and the circular relationship of pitch classes.

    Also along with the music and loops stuff:
    The original Karplus-Strong algorithm used loops of white noise to synthesise plucked string sounds.

    ETA:
    Oh my god! Not Knot! I LOVE this thing. I have and old VHS copy, but I got rid of my VCR ages ago so I haven't been able to watch it in forever.
    Eeeeeee!




    Sooooo charming!