630F09_lec_graph091007_web

630F09_lec_graph091007_web - Questions Under what...

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Tree Structured Multiple-channel Filter Bank * Use 2-channel filter bank as a building block in each level of analysis or synthesis; * In each level, split one or both subband signals into two parts using a 2-channel filter bank. Questions: Under what conditions the overall system is free from aliasing? How about P.R.? ENEE630 F'09 Figures/Plots for 10/7/2009 Preview on tree-structured filter bank
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Consider the following tree-structured filter bank -- only split the low-band signal in each level:
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Unformatted text preview: Questions: Under what conditions the overall system is P.R.? Sketch the equivalent analysis/synthesis filter responses. As each of the filter has an overall passband of about 2pi/M wide, the subband signal output can be decimated by up to M without introducing substantial aliasing. The filter bank is said to be "maximally decimated" if this maximal decimation factor is used. M-channel Maximally Decimated Filter Bank...
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This note was uploaded on 10/31/2010 for the course EE 630 taught by Professor Wu during the Spring '10 term at Aarhus Universitet, Aarhus.

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630F09_lec_graph091007_web - Questions Under what...

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