If you want a library that allows you to use sound, I would suggest Minim. There are probably other sound libraries, but this one all you have to do is add an 'import ddf.minim.*', or go to Sketch > Import Library > minim.
It may seem complicated at first, but that's generating sound for you.

I hope this helped

Indeed; there's a whole bunch of interesting looking sound libraries for Processing. See: http://processing.org/reference/libraries/#sound

Or, for possibly more direct control you could go straight for the Java Sound API: http://www.oracle.com/technetwork/java/index-jsp-140234.html
Not sure how much recent development has been done in this area, but no doubt will suit your needs. .

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