Vibrant voice effect?

[Minette]

Hi.
I've occasionally noticed that some files have adjustement to the spoken voice, kinda deep, resonant vibration. For example the hornefreaks new [url=http://www.warpmymind.com/Files/6197/psychic-developmentdeveloping-the-intiution.php]intuition file[/url] has exactly the kind of resonance in the voice.
Having just started making files, I would love to be able to use that kind of voice. What is this effect called? Is it just naturally resonating spoken voice, or is it an effect added afterwards? How is it done? Some kind of echo?

[Jadit]

Have you looked through Audacity's effect possibilities?

[IAcurious]

[Minette]

Oh, yeah ... maybe that other board would have been more suitable for this, but well... Thank you guys so much for the useful advice. :)
I'll check out the effects the Audacity, the Acoustica mixer I've been using is rather simple. This might turn out inspiring!