Don't worry Bro!; No need for Technicial, It's ABS; And cars with ABS make this sound;
But also Remember, Don't think ABS will make your car stop faster; With ABS Car takes longer to Stop, So you should take Extra Care and keep more distance from the car in front of you;
I had an Accident yesterday; And most Probably if i didnot have ABS, My car would have have crashed!