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I think you should read "Understanding DSP" that has on eda.DTFT actually a transform with frequency continous but dicrete-time and DFT is quantized both frequency and time.
I think both of them discretize time domain as DFT is sampled version of DTFT.
DTFT is continuous in "frequency" but discrete in time and DFT is discrete in both time as well as frequency.
pimr
That't right ! I agree with you,pimr.If DFT isn't discretize time domain,we can't use computer to calculate DFT,because with DFT we use signal-sampled,it means discretize signal in time-domain
In DTFT, time domain sampling data is multiply by e^-j2*pi*f*n, then summation.
But, in DTF, time domain sampling data is multiply by e^-j2*pi*n*k/N, then summation.
why it divids by N in DTF, comparing to DTFT?
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