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Problem with PCA model

Hello I have been trying to use the pca from mubu.model and have had some issues. It appears that if one uses multiple buffers the pca is only done on the highest numbered buffer. A simple way to see this is to use the catart-mfcc-pca-example patch included in the package. As one uses readappend to read in more sound files one can see that the pca track is clear for all except the most recent buffer added.

thanks, this is probably fixed but not yet released

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