On 06/26/2018 10:25 PM, Tim wrote:
>
>
> 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.
I have used PolyPitch for resynthesis of violin sounds. It does detect
double stops, though there were also false positives.
I have no idea how it would perform with a guitar, but if you ask Nick
Collins, he will give you a hint.
/ Hans
--- Hans Wilmers Notam Sandakerveien 24 D, bygg F3 N-0473 Oslo Norway tlf.: +47 22358060 mob.: +47 92459361 http://www.notam02.no _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-devReceived on Wed Jun 27 12:15:02 2018
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