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Minimum Phase and Bagby's Response Modeler 3.01

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  • Minimum Phase and Bagby's Response Modeler 3.01

    I'm having fun modeling, and am wondering what the best sequence is to get this done. I've taken to using the response modeler for baffle and box + WinPCD for crossover. The question is where to perform the minimum phase extraction. Here's how I've been doing it:
    1. Starting with raw FRD and ZMA
    2. Min phase extract and save files
    3. Pull in extracted files to the modeler
    4. Do the baffle and box setup / splicing etc for each driver individually
    5. Save modeled FRD and ZMA for each
    6. Pull modeled files into WinPCD
    7. Add crossover and acoustic offsets
    Is it appropriate to start with the minimum phase extraction?
    Electronics engineer, woofer enthusiast, and musician.
    Wogg Music

  • #2
    You want to extract AFTER you are done with the box/diffraction in Response Modeler, as if you do it before, it won't be accurate or minimum phase, and won't correlate with the changes you just made.

    I have a blog about the order that is linked in the 'Bible' sticky. Maybe that will help you out some.

    Later,
    Wolf
    "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
    "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
    "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
    "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

    *InDIYana event website*

    Photobucket pages:
    http://photobucket.com/Wolf-Speakers_and_more

    My blog/writeups/thoughts here at PE:
    http://techtalk.parts-express.com/blog.php?u=4102

    Comment


    • #3
      min phase should be the last step after you are complete working with the driver response. Phase is a derivative of the frequency, so if the frequency response changes then so does phase.
      Don't waste your money on a new set of speakers, You get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

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      • #4
        Good to know guys, thanks. It's been a while since I read through the bible stickies. So the order would be:

        FRD/ZMA -> Modeler output -> Min Phase -> PCD
        Electronics engineer, woofer enthusiast, and musician.
        Wogg Music

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        • #5
          You've got it

          Comment


          • #6
            Originally posted by Wolf View Post
            You want to extract AFTER you are done with the box/diffraction in Response Modeler, as if you do it before, it won't be accurate or minimum phase, and won't correlate with the changes you just made.

            I have a blog about the order that is linked in the 'Bible' sticky. Maybe that will help you out some.

            Later,
            Wolf
            Does this hold true if the initial FRD and ZMA files are based on traced graphs and therefore have no phase information? Just to be clear, could MPE be run twice? One before box model, diffraction, and tails are added, and once after.

            Thanks,

            Rob

            Comment


            • #7
              If you want to have a raw driver file with extracted min phase, then you can save it that way, but in terms of extraction, it won't matter if you do it twice, 3x, or 4x. The when you extract is what matters.
              Wolf
              "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
              "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
              "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
              "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

              *InDIYana event website*

              Photobucket pages:
              http://photobucket.com/Wolf-Speakers_and_more

              My blog/writeups/thoughts here at PE:
              http://techtalk.parts-express.com/blog.php?u=4102

              Comment


              • #8
                When I installed Jeff Bagby's Response Modeler 3.01 tool on the latest year 2016 version of Excel I got:
                "Compile error in hidden module: ThisWorkbook"
                "Compile error in hidden module: cGlobal"

                Anyone else get similar errors?
                Anyone know of a solution?
                Google strikes out.
                No errors on my computer with Excell 2007.

                Comment


                • #9
                  Haven't tried 2016 yet. Sent from my SM-G920P using Tapatalk
                  Electronics engineer, woofer enthusiast, and musician.
                  Wogg Music

                  Comment


                  • #10
                    Originally posted by 3way View Post
                    When I installed Jeff Bagby's Response Modeler 3.01 tool on the latest year 2016 version of Excel I got:
                    "Compile error in hidden module: ThisWorkbook"
                    "Compile error in hidden module: cGlobal"

                    Anyone else get similar errors?
                    Anyone know of a solution?
                    Google strikes out.
                    No errors on my computer with Excell 2007.
                    Jeff's spreadsheets were set up to run on older versions of excel, MS changed the macros in 2013 I believe so you need 2010 or older.
                    https://www.facebook.com/Mosaic-Audi...7373763888294/

                    Comment


                    • #11
                      Have you tried FRD Response Blender? Better than RM I think Sent from my iPhone using Tapatalk
                      " To me, the soundstage presentation is more about phase and distortion and less about size. However, when you talk about bass extension, there's no replacement for displacement". Tyger23. 4.2015

                      Quote Originally Posted by hongrn. Oct 2014
                      Do you realize that being an American is like winning the biggest jackpot ever??

                      http://www.midwestaudioclub.com/spot...owell-simpson/
                      http://s413.photobucket.com/albums/pp216/arlis/

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