On Wed, Jul 26, 2006 at 02:04:24PM +0100, James Courtier-Dutton wrote:

> Alfons Adriaensen wrote:
> >   
> >To summarize, aliasing is the result of the _sampled_ nature of a
> >digital signal, not of its numerical (digital) form.
> >
> >  
> 
> That is true for your particular example, but aliasing artifacts can be 
> introduced during digital signal processing.
> Most noticeably, when using digital signal processing to resample from a 
> high sample rate to a lower sample rate.

Of course. We are still talking about sampled signals in that case - they
just happen to be digital as well. Numerical representation does not
exclude quantisation in time. On the contrary, in practice 'digital'
almost implies 'sampled' (as the data rate would be infinite otherwise).

-- 
FA

Lascia la spina, cogli la rosa.

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