Pulkit Sharma Vinayak Abrol Aroor Dinesh Dileep Anil Kumar Sao Sparse coding based features for speech units classification. 712-715 2015 INTERSPEECH https://doi.org/10.21437/Interspeech.2015-246 conf/interspeech/2015 db/conf/interspeech/interspeech2015.html#SharmaADS15