For create any sound we require following three functions:
-It is use to create a sound.
-Here number can be any integer number like 0,1,2,......1000,...
-Basically, this function is not the part of the sound programming but we use in this for our use.
-It hold the execution for given times or we can say that it delay the execution.
-Here time is in the mili second.
-It is used to close the runing sound.
-It just a opposite of sound() function.
-We do not require to pass any argument in this function.