completely unsupervised fashion are v better way more semantic than something engineered with domain knowledge and also for phoneme classification which is actually even higher than speaker classification CPC features without any fine-tuning just linear classifiers able to do is able to get 64 point six percent way better than MCC features which is this forty percent and we're better than rounding random initializations 30 percent and supervised learning gets seventy four point six percent which is 10% better than just linear classifier