How to change a file folder in Matlab

Hello, I wanted to ask about how you might change a file in a folder where I can download a file in Matlab to another folder within the directory. For example I use to download a .wav file :

command = [ ' youtube- dl sudo -x --audio -format wav --id https://www.youtube.com/watch?v=NCtzkaL2t_Y '] ;

And in the folder where I am ( home / user / Deskop / New ) has been downloaded me the .wav file ( NCtzkaL2t_Y.wav ) I have it there , and want to save that file to another folder in the directory (home / user / Deskop / New / New_2 ) but I do not know how I can do it .... Any ideas ?

thank you very much!

[Azzi Abdelmalek]

You already have asked the same question at least two times:

http://www.mathworks.com/matlabcentral/answers/293908-how-to-change-directory-or-folder-in-matlab-in-a-program

and

http://www.mathworks.com/matlabcentral/answers/293968-saving-a-file-created-wav-txt-to-another-folder-in-the-current-directory