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- Constant-Q is hard for digital filters
- Constant-Q tracks are logarithmic spirals
- These aren't ``root-locus primitives''
- The separation table does a good job making constant-Q
(didn't necessarily expect this)
- Look at zero locations between the two cases
(remembering that we would like to get rid of the table).
First, review the parameters we have to control:
- easiest: the zero locations
- also easy: the relative open-loop pole locations
(so far, have only really looked at all equal)
- more expensive: frequency-to-pole and Q-to-feedback-gain
mapping functions (or more esoteric mappings)
Note that
Try other locations...
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Download Mohonk05.pdf
Download Mohonk05_2up.pdf