Questions tagged [unit-delay]

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3
votes
1answer
117 views

SRF-PLL discretization problem

So I've been working on how to digitally implement a static reference frame PLL (SRF-PLL), which is a quite popular PLL used for extracting three-phase grid angle. This PLL works by using the DQ0 ...
4
votes
2answers
3k views

How/why are the $\mathcal Z$-transform and unit delays related?

The $\mathcal Z$-transform uses the same notation as the unit delay $z^{-1}$, but in $\mathcal Z$-transform $z$ is a complex number. What's the relation between the $\mathcal Z$-transform and the ...
2
votes
3answers
646 views

Splitting the Unit Delay

Please refer to the paper Splitting the Unit Delay - Tools for fractional delay filter design by Laakso, Valimaki et.al. I am not able to visualize how the fractional delay is obtained by resampling ...
1
vote
1answer
223 views

Unit delay operator as parameter in function

I'm busy trying to implement a filter from this paper. I'm a bit confused with one particular step (30e in the paper). Basically I need to find the zero frequency gain (K) of the following whitening/...