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Great! Thanks for your participation in keeping everybody updated on the spreadsheet evolution.

In general, with miniDSP Advanced biquad programming, there is so much potential with this feature that we'd hope that others ideas will follow up by those of you experimenting with them...

keep it up!

Added a graph.

great work knuisje!

I made an OO version (and made the graph slightly better looking)

Geez, you guys are starting to seriously compete with the LT spreadsheet running around the DIY audio forums...Neat!

Keep up the good works and let us know how this implementation works on a real speaker prototype. Anybody out there already at that stage, maybe with measurements?

In this latest version I added to the graph the equalizer as calculated from the digital coefficients. This is usually the same as the targeted equalizer as calculated from the original and target response. But when you fiddle with Fc and Fs you can see it can be different.
I also added a digital filter stabilty calculation. When the poles are within the unit circle the digital filter is stable. Enjoy!

Very nice... I'm glad to see how you guys are handling this task and doing a very good job at keeping everybody in the loop. Any news on a real implementation? I'm guessing that you're tweaking your system as you're loading new biquad settings into the board?

If you have any results/graphs to showcase on how your LT improved your system, sharing it with us on the Showcase section would definitely be appreciated!

Keep up the good work!