MATLAB I need help with overlapping my output.

heres the example:

here's my code:

Thank you!

Asexplained inSection 4.2, allow the decaying no tes (ie. with the wirdowing function) to overlap slightly in time. The size ofthe overlap between two consec utrve ADSR functions can be 100 sampes. Asexplained inSection 4.2, allow the decaying no tes (ie. with the wirdowing function) to overlap slightly in time. The size ofthe overlap between two consec utrve ADSR functions can be 100 sampes