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Viewing 15 posts - 1 through 15 (of 171 total)
    • 13 September 2023 at 8:27 pm #708

      Yes, generally speaking, IIR filters are minimum phase. However more importantly they are much more efficient at filtering, particularly at low frequencies where an equivalent FIR filter would require 1000’s of taps. I recommend you read:

      FIR Filter Guide

      >> If so, how am I supposed to differentiate them from mixed responses e.g. room responses?

      It depends on why you want to differentiate between minimum phase and mixed or non-minimum phase components.

      The FIR Creator workflow lets you do whatever you like. You can push the measurement towards target with only minimum phase filters (using the IIR, FIR Mag Adjust and FIR Auto Mag) or you can use additionally use the FIR Phase Adjust and FIR Auto Phase tabs to correct for non-minimum phase components. It’s completely up to you. We don’t advocate any particular method. We just provide the tools to enable you to try whatever approach you like.

      Best regards,
      EA Support

        4 September 2023 at 7:12 pm #704

        Sorry, 1.0.0, 1.0.1, 1.0.2 and 1.0.3 contain a bug which could give you wrong measurements. We won’t be providing download links for these. This bug was fixed in 1.0.4.

          4 September 2023 at 6:43 pm #702

          I can’t explain why 1.0.2 stopped working for you.

          We’ve checked the builds. SM version 1.0.0, 1.0.2 and 1.0.3 were built with Qt 6.4, which does support Catalina. SM 1.0.4 and 1.0.5 were built with Qt 6.5.x, which doesn’t support Catalina. We always intended SM to be on Qt 6.5.

          SM version 1.0.4 (built with Qt 6.5.1) fixed a problem with an intermittent glitch in the transfer function which all users need. Version 1.0.5 addressed problems in Qt itself and was built with Qt 6.5.2.

          All this to say, we can’t go back and build 1.0.5 with older versions of Qt, so unfortunately you’ll need to either update macOS, or find a MS Windows PC.

          Best regards,
          EA Support

            4 September 2023 at 6:31 am #700

            Sorry, no. Apple keep moving forward quickly with their OS releases and the GUI toolkit we subscribe to – Qt – moves with it.

            Regards,
            EA Support

              3 September 2023 at 10:16 pm #698

              Version 1.0.5 is available at

              SpeakerMeasure

              Best regards,
              EA Support

                31 August 2023 at 2:33 pm #696

                The data across the formats is effectively identical, with some caveats for WAV.

                CSV(row) has FIR coefficients formatted as text in a row.
                0.0010, -0.07, 1.0, 0.03 …..

                CSV(column) has FIR coefficients formatted as text in a column
                0.0010,
                -0.07,
                1.0,
                0.03

                WAV uses 24 bit WAV files to store the coefficients. WAV does quantize the data to 24 bit depth, but still has an effective range of > 130 dB. WAV also clips coefficients that are > 1.0 or < -1.0. But “FIR Creator EX” will give a warning if your FIR filter coefficients are outside -1.0 to 1.0 and you are trying to save as WAV.

                I’d recommend using one of the CSV formats.

                Best regards,
                EA Support

                  26 August 2023 at 7:13 am #693

                  Yes. FIR filters can push a non-minimum phase response to whatever you like. The result will be your desired mag & phase + some bulk delay.

                  Best regards,
                  EA Support

                    23 August 2023 at 8:01 am #690

                    The final length depends on your measurement and exactly what filtering is needed to achieve your goals. Just try it in FIR Creator EX. On the Export tab you can adjust the filter length and delay to where the filter is working the way you want, and you can see the result applied to your loudspeaker measurement. If you’re unsure how to use the workflow, take a look at the videos and tutorials on https://eclipseaudio.com/fir-filter-design-tutorial/.

                    Best regards,
                    EA Support

                      22 August 2023 at 9:54 pm #688

                      It really depends how low in frequency you’d like to go – at least a few 1000’s taps at 48 kHz.

                      Take a look at Section 8 on the page

                      FIR Filter Guide

                      Best regards,
                      EA Support

                        11 August 2023 at 8:20 am #681

                        When using FIR Designer M for multi-way, how you use the “Find peak” depends on how you took the measurements.

                        If your measurement system delay was locked when taking measurements across all the drivers, the relative delay between drivers is in the measurements, and using “Find peak” on each measurement will loose the relative delay. In this situation, you could complete your design, put all the processing into your DSP then re-measure and tune the channel delays. Alternatively, use “Find peak” on one of the drivers – say the HF – and manually apply the same delay (on the “Import tab”) to the other drivers. In this way the relative delay between drivers (in the measurements) is not lost. You can complete your design and you won’t need to re-measure and tune delays.

                        If your measurement system delay was not locked when taking the measurements across all the drivers, then it doesn’t matter if you use “Find Peak” or not. You will still have to re-measure and tune the relative driver delays anyway.

                        “Find peak” it’s useful for taking out any high phase slope, which is the consequence of delay in the measurement, before working on designing the processing.

                        I’d also suggest looking at the “FIR DESIGNER M (Multi-way) | Overview” video on https://eclipseaudio.com/fir-filter-design-tutorial/

                        Best regards,
                        EA Support

                          5 August 2023 at 12:35 pm #679

                          More issues were reported in 4.0.5 and we’ve just released 4.0.6.

                          Thanks for your patience.

                          EA Support

                            4 August 2023 at 1:29 pm #678

                            >> I had 2.6.11 installed and I did an update install on top of that.
                            >> Can I remove this install and reinstall 4.0.4?

                            You can reinstall 2.6.11 and it will replace 4.0.4.

                            However, we’ve just released 4.0.5 which should address the problem you’ve described. Unfortunately changes in then underlying GUI toolkit – not our code – caused a long list of problems with the UI, including tabs missing and menu problems.

                            Let us know if 4.0.5 is working.

                            Best regards,
                            EA Support

                              3 August 2023 at 12:25 pm #676

                              The copying should be possible. We’ll take a look and get back to you.

                              Best,
                              EA Support

                                2 August 2023 at 9:52 pm #671

                                Are you on macOS or Windows?

                                If on macOS,
                                – are you using the ARM or Intel version?
                                – are you copying the app from the DMG into the Applications folder and running it from there? (There can be licensing issues if running the app directly from within the DMG file.)

                                If on Windows, what Windows version do you have?

                                If you reinstall 2.6.11, does the app, including the licensing, work as normal?

                                Could you email us the files from the old system you’re trying to load?

                                Best,
                                EA Support

                                • This reply was modified 1 month, 3 weeks ago by EA Support.
                                • This reply was modified 1 month, 3 weeks ago by EA Support.
                                  10 July 2023 at 11:59 am #668

                                  Excellent!

                                Viewing 15 posts - 1 through 15 (of 171 total)