Please, help me. I need information about the operation of sound level meter ....?

Question

Hi, I need
1)information about the operation of sound level meters (websites, pdfs, ...)
2)If you can also, I want hints on how to write a MATLAB program (or a program in any other language) that measures the sound pressure level.

Answer 1

So why don't you just download this file....
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=9603&objectType=file
(you will need "WinZip" to de-compress that file)