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Questions and Comments for

Discrete-time Fourier transform (DTFT) of a sampled cosine

A slecture by ECE student Yijun Han



Please post your reviews, comments, and questions below.



  • Review by Miguel Castellanos

Both of your computations are clear, and using the periodicity of cosine in the second computation helps illustrate why aliasing occurs with the second sampling period. In your conclusion, be sure to mention what axis you are rescaling. Nice job!

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  • Review by student 2
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  • Review by student 3
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  • Review by student 4
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Basic linear algebra uncovers and clarifies very important geometry and algebra.

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