Problem
1. Write a function called erase Part to set all the samples in the 2nd second of thisisatest.wav to 0's-essentially, making the 2nd second go silent. Play and return the partially erased sound.
2. Can you write a function that finds the silence between words? What should it return?
3. Write a function to increase the volume on the passed sound just between the passed start and end index.
4. Write a function to reverse part of the passed sound just between the passed start and end index.