Discrete -Time Fourier Transform

So from what I searched in the net, DTFT is the continuous Fourier
transform of a discrete (or quantized?) signal while DFT is the discrete
Fourier transform of the quantized signal. Meaning DFT is used in actual
Systems since it gives out data which can be processed by computer. If
that is the case, what is DTFT for? Is it used in actual systems or just
used for mathematical proving and analysis?


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"Shadow Flux" <108168@DSPRelated> writes:

> So from what I searched in the net, DTFT is the continuous Fourier
> transform of a discrete (or quantized?) signal while DFT is the discrete
> Fourier transform of the quantized signal. Meaning DFT is used in actual
> Systems since it gives out data which can be processed by computer. If
> that is the case, what is DTFT for? Is it used in actual systems or just
> used for mathematical proving and analysis?

You're spot on, Shadow - just for analysis.
-- 
Randy Yates
Digital Signal Labs
http://www.digitalsignallabs.com