![Figure 1: The weights of the partitioned half band filter hA[n] and hB[n].](https://www.wavewalkerdsp.com/wp-content/uploads/wordpress-popular-posts/2226-featured-125x100.png)
![Figure 3: The complex sinusoid e(j2 pi (2/4) n) only contains energy at X[2].](https://www.wavewalkerdsp.com/wp-content/uploads/wordpress-popular-posts/8136-featured-125x100.png)
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New Book!
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.