Shabnab has a voice Fold cyst.

[CrazyColaist]

I have exactly the same kinda voice with her and i know 5 other people who have voice cysts and it sounds exactly the same

Cysts can deteriorate the quality of human speech production, causing diplophonia, a condition where the vocal cords produce multiple tones at the same time, or dysphonia, commonly known as lisping. Females are more likely than males to develop vocal fold cysts and the menstrual cycle may alter the size of the cyst. The cysts usually appear on one side of the vocal fold but may cause swelling on the opposite side due to irritation.