I'm glad to inform that I already have a very very (once again very!) rough version of the DTW object. It's already measuring the distance between two series of numbers - although I have some doubts about the inlets, if I should receive the values as an array or list (currently list, because I didn't knew how to manipulate arrays - this is my first external).
I should post a alpha version when the code is more cleaned up. The implementation of the DTW iteself is based on Andrew Slater/John Coleman's code. best regards, Pedro On Fri, Apr 30, 2010 at 6:39 PM, Pedro Lopes <[email protected]> wrote: > Hello, I'm trying to do a small project, for which I need an > implementation of the DTW [1] (Dynamic Time Warping) algorithm. It takes to > series of values and measures the similarity between them, considering that > they can vary time or speed. > > I've done a few searches but seems to be impossible to find a DTW external > for Pd, is there one? > > On the SMC2009 conference, a paper[2] was presented where they stated that > they used DTW under Pd but I couldn't find their implementation anywhere > (nor received feedback from the authors still). Also there is a reference to > a Max/MSP implementation by Olaf Matthes [3] but once again... cannot find a > Pd version. > > So if anyone can be of help in this search for DTW inside Pd, it would be > most helpful. > > p.s.: As far as C alike implementations, I found this in C [4] and this C++ > lib [5] seems to use a DTW implementation too. > > [1] http://en.wikipedia.org/wiki/Dynamic_time_warping > [2] http://smc2009.smcnetwork.org/programme/pdfs/321.pdf > [3] http://maxobjects.com/?v=authors&id_auteur=39 > [4] http://www.phon.ox.ac.uk/files/slp/Extras/dtw.html > [5] http://code.google.com/p/lbimproved/ > <http://code.google.com/p/lbimproved/> > -- > Pedro Lopes > contacto: [email protected] > website: http://web.ist.utl.pt/Pedro.Lopes > > > > -- > Pedro Lopes > contacto: [email protected] > website: http://web.ist.utl.pt/Pedro.Lopes > -- Pedro Lopes contacto: [email protected] website: http://web.ist.utl.pt/Pedro.Lopes
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