Audio thumbnailing

放reference https://github.com/tyiannak/pyAudioAnalysis/wiki/5.-Segmentation

Audio thumbnailing is an example of unsupervised segmentation.

Audio thumbnailing is an important application of music information retrieval.

Audio thumbnailing detects instances of the most representative part of a music recording.

Function musicThumbnailing(x,Fs, shortTermSize=1.0, shortTermStep=0.5, thumbailSize=10.0) in audioSegmentation.py