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Re:Linkwitz transform 10 years 10 months ago #3656

  • CharlieLaub
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Dave,

Thanks!!! I am still introducing myself to my MiniDSPs, so I was not aware I could do it that way... originally, I was planning on implementing everything via the biquad transfer function coefficient programming.

So, I guess I would still like to know how to do it with the biquads... any ideas?

-Charlie

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Re:Linkwitz transform 10 years 10 months ago #3657

  • dreite
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Charlie,

Select the "Biquad Calculator" tab on your advanced plugin application and select PEQ, low(high)-shelf, Q=1, etc, etc, and hit the "calculate" button. It'll compute the required coefficients which you can then paste into the appropriate PEQ area of your plugin.

(This is on page 16 of the 2x4 user manual.)

Cheers,

Dave.

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Re:Linkwitz transform 10 years 10 months ago #3659

  • CharlieLaub
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Hi Dave,

Again, thanks! Also a good way to get the coefficients.

But!!!! I am designing an Excel based active crossover modeler. I would like for it to display the transfer function coefficients, so I need to know how to calculate them, e.g. formulas, so that I can enter them in the spreadsheet. This is for DIY purposes only. I am planning to copy out all the other calcs from knuisje's spreadsheet, and so I am only missing these...

-Charlie

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Last edit: by devteam. Reason: Wrong button!

Re:Linkwitz transform 10 years 10 months ago #3661

  • devteam
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Charlie,

I am planning to copy out all the other calcs from knuisje's spreadsheet


I know it's not bad intended, but it doesn't sound that good on a post without some context. Asking for Knuisje's & other NL DIYers authorization's (and giving them Credits) when doing so would make sense since these guys did spend a lot of time refining this spreadsheet :-)

FYI, reading some basic "EQ cookbook by RBJ" should set you up in understanding everything you need to build your custom biquad.

DevTeam
miniDSP, building a DSP community one board at a time.

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Re:Linkwitz transform 10 years 10 months ago #3663

  • CharlieLaub
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I really, really don't understand why there is a problem. knuisje posted the spreadsheet; anyone can download it. What's the difference whether I use it as is, or copy some formulas from it to my own personal spreadsheet on my computer? This is for my personal DIY use...

I did send him a personal Email through this system a day or two ago, but I have not gotten a response. I was only trying to appeal to more seasoned people who have done more programming of digital biquads to just throw me the answer because I am in a rush to get this working for a speaker that I have planned to bring to Burning Amp, which is taking place in 3 days.

-Charlie

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Re:Linkwitz transform 10 years 10 months ago #3667

  • knuisje
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I'm back from my holiday. :) I guess everything is solved now?

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