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Parametric Eq and Modules
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February 1, 2016
4:26 am
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Skyler
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I have been working through the book trying to learn c++ and Dsp at the same time. I have it a road block at chapter 6 when the book transitions into pure equations. My question is there anyway to view the module code of the modules that are built into rack afx. Would somebody be willing to explain how to make an Eq and how it works. I feel like this is the breakthrough I need to really understand it. If anybody has the time I would really appreciate it thank you!

P.S. I can make shelves but controlling Q and frequency is beyond me at this point.

February 1, 2016
7:16 pm
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W Pirkle
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The Modules in RackAFX are directly from the book.

You are looking at the formulas and equations that I use right there in Chapter 6. If you do the Resonant LPF project in Chapter 6, then you are doing the 2nd order LPF part of the Module named "HP/LP"

- Will

February 8, 2016
1:55 am
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Skyler
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Thanks for clearing that up! I never made that connection. Thank you

February 8, 2016
8:22 pm
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W Pirkle
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Also, with several of the Modules (including HP/LP) you can open the Block Diagram (toolbar button or View->Block Diagram) and view the coefficients for the filters. As you move the sliders around to change parameters, you can see the coefficients updating in real time. You can also use these filters/block diagrams to check your own calculations of the coefficients.

- Will

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