[sdiy] QTC and delurk

[Paul Perry]

I believe there is a proprietary bass frequency detection algorithm, that
detects the frequency of a note, from only a part of the first cycle of the
note. (this won't look much like a sine wave.)
It is intuitively possible that this can be done, if you imagine a physical
analogue.
A neural network algorithm was used, I seem to remember.

(alternatively, I can imagine looking at a family of the initial fragments
of the first cycle of the alternative possible notes, and seeing which fits
best to what is seen).

Paul Perry Melbourne Australia

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