Digital Signal Processing: Anti Aliasing, Sampling & Quantization Explained

[Erida]

Hi...
I have just started reading about digital signal processing and I am a bit confused. I was wondering if you guys could help me... with probably too easy stuff.
So... in order to convert an analogue electrical waveform into a digital wave, there are 3 steps: anti aliasing filtering, sampling and quantization...
What exactly happens to the waveform during each stage?
Do you know any sites where I can find any graphs that exemplify this process?


Thank you!

I'll be forever indebted!:)

Erida

 

[dlgoff]

Filter-remove frequencies you might not be interested in
Sample-input the voltage of the waveform to your circuit (A to D converter)
Quantization-Code the input voltage into a digital bit representation

 

[Erida]

Thanx a lot man!