[PD] [Bulk] Re: automatically get chord from sequence of notes?

[Rivoire David]

And how can I do when I should record a true sound of trombone ? Because I am a trombonist player...

Envoyé de mon iPhone

> Le 20 févr. 2015 à 18:20, Alessio Degani <alessio.degani at ymail.com> a écrit :
> 
>> On 20/02/2015 15:28, Rivoire David wrote:
>> Yeah, but there is a link between this two topics, after having analysed the harmonics I would like to create a sequence of notes about it and automatically get chords that fit into it...
> In general, this is not an "easy" task.
> I'm currently working (research) on the audio chord estimation (ACE) topic.
> For a "standard" song (polyphonic, poly-intrument) the accuracy is still far from perfect (~75% of accuracy on a given, limited, test-set).
> 
> However, for a single instrument, you can achieve good results with a simple template matching.
> You can't work directly on the FFT, but from the FFT you have to calculate a 12-dimensional mid-level descriptor (called Pitch Class Profile).
> Then you can train your chord templates using a specified instrument (i.e. if you want to estimate piano chords, you have to train your templates with your piano).
> 
> Cheers
> -- 
> a.
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