PHP - Php Sound Wave

Trying to write a webapp in PHP which works similar to VocalPitchMonitor app (Android) with some added features. But capturing voice and display it as wave format is possible in PHP? Is there any example script for this?

 

Hello,
Is this a sound explanation of require and include..
Lets say i have "X" application with an index.php file. in a folder on my domain like so: www.xxx.com/Application X folder/index.php.

// the index.php calls to multiple files with-in the "Application X folder" and database.

What if i move the index.php to another location all together like so:
http://www.xxx.com/notXsubfolder1/notXsubfolder2/notXsubfolder3/index.php //the X application index file..

and then edit the require and include links in the index.php file to paths like this (just example might not be accurate):

require_once '../../../../application X Folder/include/required_file.php';

My question:??
What i want to know is: if the required_file.php has includes of its own, will it take the includes that it requires from its original folder where the Required_file.php is located? or will its paths change the the new index.php location??

.