Hello,
I'm new here and i need some help with the ess libary. I'm german and i don't understand the declarations of this website: http://www.tree-axis.com/Ess/

I need this for a study project. I have had a first introduction in processing by a professor but only easy things.

For this project i want to visualise a citation and explain what the visualisation say to me or to a contemplator.
I'have tried it, but i'm failing.

In an example on the Website there is something like this:

import krister.Ess.*;

FFT myfft;
AudioInput myinput;
int bufferSize=512;    

void setup() {
 size(1024,768 );
 background(255);
 noStroke();

 Ess.start(this);
 myinput=new AudioInput(bufferSize);
 myfft=new FFT(bufferSize*2);
 myinput.start();

 myfft.damp(.3);
 myfft.equalizer(true);
 myfft.limits(.005,.05);
}

Why is int bufferSize=512;?
What does it says to me? Is this the frequency or something and why is myfft=new FFT(bufferSize*2);?

And what are these variable good for?
 myfft.damp(.3);
 myfft.equalizer(true);
 myfft.limits(.005,.05);

And in which unit i get the spectrum by
myfft.spectrum? is it Hz or the sound volume?

Sorry, I know these are many questions at one time but i have to do this project until march and it is very important for me. Please help me with easy explanations:-)

Thank you.