On 06/26/2018 03:55 PM, Hans Wilmers wrote:
On 06/26/2018 08:32 PM, Spencer Jackson wrote:
I don't know of anyone really working on polyphonic pitch recognition in
the open source world. I think Bayesian filtering of some kind though
would be compelling. Perhaps some of the work from ISSE
(http://isse.sourceforge.net/) could be used and made realtime.
There is a SuperCollider plugin by Nick Collins called PolyPitch, which
does what the name suggests.
The source is GPL, and available here:
https://composerprogrammer.com/code.html
/ Hans
From Klapuri, "Multipitch analysis of polyphonic music and
speech signals using an auditory model", from PolyPitch:
"The method consists of a computational model of the
human auditory periphery, followed by a periodicity analysis
mechanism where fundamental frequencies are iteratively
detected and canceled from the mixture signal."
Wow. That seems much different than all the other papers I read.
Wonder how well it works, especially if applied to guitar.
It sort of reminds me of how I once was part of Sony's rollout of
Surround Retrieval System technology.
It was TV surround speakers modeled based on human hearing,
to make one pair of these speakers simulate a truer surround.
Tim.
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