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Iam trying to understand the discrete time fourier transform for a signal processing course but Iam quite confused about the angular frequency.

If I have a difference equation given, what values should I choose for my angular frequency if I do

not know anything about the sample frequency?

Should they go from - pi to pi or from 0 to 2pi?

And what does it mean if The frequency is given in 'units of pi'?

Can I convert this into Hz?

Thanks in advance,

Mike

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# DTFT angular frequency

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