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Possible to do tri-amping for 5.1 channel setup?

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mattkhan:

--- Quote from: etc6849 on July 02, 2017, 02:10:48 pm ---Have you tried using linear filters and then all pass filters to correct phase, or is the auto room correction in Acourate good enough to where it flattens phase very well for the final output (e.g. corrects any phase shift that was added by classic linear filters like BW, LR, etc...)?  Also, how does Acourate handle multiple sampling frequencies (fs)?  I am assuming it generates filters for each fs like Dirac?
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the choice is yours :) acourate has a set of macros that perform a semi automated (room) correction, this performs separate magnitude and phase correction steps based on your defined target curve and where each correction is performed according to a number of parameters which you control. These corrections are combined with your crossover filters and you can embed other things in these (e.g. a driver linearisation filter, inter driver delays). The crossovers themselves are also generated in acourate and can be minimum or linear phase, alternatively you can import one created elsewhere.  The final filters can be generated in your choice of format and sample rate(s).

Aside from this, you can use the toolbox features to construct all sorts of things. To give an example, the filter I generate for my near field subs embeds a VBA (virtual bass array) filter (basically a delayed, inverted copy of itself to soften a room mode without impact the direct sound), a steep low pass filter at 47Hz (to avoid the NF sub contaminating the audible range too much) and a custom phase correction filter to "remap" it's phase response onto the correct phase response of my main subs (to avoid any unwanted interaction effects as the NF rolls off).

I then simply load those filters into jriver via a cfg file and away we go. It's not a user friendly app by any stretch so the learning curve is quite steep, great if you like to tinker though. https://www.amazon.com/dp/B01FURPS40 gives a good account of how to use it.

etc6849:
Thanks!  I will purchase this book and study it.

This virtual sub idea is very intriguing and clever!  I would think it would work very well.  Do you typically do room correction filters after after averaging many points like Dirac does (for the crossovers however, I'd plan to do a single point at the MLP)?

If you know someone as well versed as you in the Columbia, SC or Atlanta, GA area, maybe we could trade services as I know a lot about home automation and I'm a decent HA programmer.


--- Quote from: mattkhan on July 02, 2017, 03:23:33 pm ---I then simply load those filters into jriver via a cfg file and away we go. It's not a user friendly app by any stretch so the learning curve is quite steep, great if you like to tinker though. https://www.amazon.com/dp/B01FURPS40 gives a good account of how to use it.

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mattkhan:

--- Quote from: etc6849 on July 02, 2017, 07:02:14 pm ---This virtual sub idea is very intriguing and clever!  I would think it would work very well.  Do you typically do room correction filters after after averaging many points like Dirac does (for the crossovers however, I'd plan to do a single point at the MLP)?

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acourate is a single point measuring system when using its macros, though you can design your own filters as well using whatever process you like (e.g. moving mic method or by designing sub filters in MSO). IME the single point method does work very well.

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