Updated tests for MelFilterBank.
Updated tests for MelFilterBank.

sav6622/aquila,tempbottle/aquila,zsiciarz/aquila,zsiciarz/aquila,Aldor007/aquila,sav6622/aquila,synkarae/aquila,tempbottle/aquila,zsiciarz/aquila,Aldor007/aquila,synkarae/aquila,tempbottle/aquila,synkarae/aquila,synkarae/Quasar,synkarae/Quasar,synkarae/Quasar,zsiciarz/aquila,sav6622/aquila,Aldor007/aquila