-1
$\begingroup$

Assume that I have a N=10 samples with Fs=10. assume in the time domain an unit impulse event happens which should be placed at 3.425 index in time domain. Assume that I could not change Fs or increase N How could i register such unit impulse inside a vector with 10 elements when it does not match to my bin index? I somehow understood it is related to Sinc function but still did not get how could I know the coefficients of the bins in the mentioned example settings.

For example it should be something like [0 0 .3 .52 .6 .43 .3 .2 0 0] but I have no idea how determine the numbers. Thanks

Improve this question
$\endgroup$

1 Answer 1

Reset to default
1
$\begingroup$

You need to design a fractional delay. That's not a trivial problem and requires a fair bit of math and requirements management. A really good resource is http://users.spa.aalto.fi/vpv/publications/vesan_vaitos/ch3_pt1_fir.pdf

Improve this answer
$\endgroup$
2
  • $\begingroup$ Thank you. Do you mean in order to know the coefficients of my example (vector of 10 elements) I need to go that much in depth ? I am not sure if I even put a lot of time I could connect that PDF to the solution of my problem by myself. Could you please let me know the answer at least if you know the method? I just know I need to use Sinc function. Thanks $\endgroup$
    – learner8059
    Commented Oct 1, 2019 at 19:22
  • $\begingroup$ I think in my case it does not work as FD used when you want to have smooth transition between to samples and not when a unit impulse happens ( rapid change) between two samples $\endgroup$
    – learner8059
    Commented Oct 3, 2019 at 5:40

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.