detection chant labri

(je n'ai pas testé les performances...)

 Committer: Jean-Luc Rouas <jean-luc.rouas@labri.fr>
 On branch diadems
 Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

	new file:   labri_singingvoice.nobob.py
	new file:   trained_models/nosing.512.gmm.sklearn.pickle
	new file:   trained_models/sing.512.gmm.sklearn.pickle