[Scipy-tickets] [SciPy] #1812: Erratic phase plot for high order filters
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Sat Jan 12 20:56:48 CST 2013
#1812: Erratic phase plot for high order filters
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Reporter: kitmonisit | Owner: somebody
Type: defect | Status: new
Priority: normal | Milestone: Unscheduled
Component: Other | Version: 0.11.0
Keywords: |
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Comment(by kitmonisit):
I'm sorry about the list formatting in the original post. Here is a more
readable version:
1. Set up specifications[[BR]]
2. Convert Hz to rad/s (w is "omega")[[BR]]
3. Normalize w from 0 to 1[[BR]]
4. Calculate required filter order and natural frequency
(scipy.signal.buttord)[[BR]]
5. Calculate zeros, poles, and gain (scipy.signal.butter)[[BR]]
6. Create LTI system (scipy.signal.lti)[[BR]]
7. Compute Bode plots (scipy.signal.lti.bode)[[BR]]
8. Convert w back to f and scale appropriately[[BR]]
9. Plot stuff to "plot.pdf"
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Ticket URL: <http://projects.scipy.org/scipy/ticket/1812#comment:1>
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