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Viewing 15 posts - 241 through 255 (of 348 total)
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    • EA Support
      4 July 2022 at 11:24 pm #510

      Like we suggested, ensure the measurement doesn’t have significant bulk delay. Then you can apply variable smoothing and transfer to FIR Designer as freq/mag/phase TXT with reasonable confidence.

      Best,
      EA Support

        EA Support
        4 July 2022 at 10:41 am #507

        It looks like FIR Designer matches REW in mag and phase. The measurement clearly has very high phase slope and thus significant bulk delay. This bulk delay should be removed in the measurement process if phase is to be used in any subsequent filter design. FIR Designer does its best to create an IR from the freq/mag/phase TXT format but using freq/mag/phase looses information when the measurement has very high phase slope. Better to export the measurement IR directly and load this into FIR Designer.

        BTW, from a display perspective, in Preferences you can uncheck “Show phase plot wrapping” to remove the vertical lines between when the phase wraps.

        Best,
        EA Support

          EA Support
          2 July 2022 at 11:10 am #503

          Thanks. Our apologies. In our haste to get an update out for you the change made it into the mac build but not the Windows build.

          2.4.7 is now available and we’ve confirmed that the commas are there.

          Best regards,
          EA Support

            EA Support
            29 June 2022 at 8:19 am #501

            Thanks!

            BTW As you’ve probably noticed, there’s no error checking and feedback to the user from Q-SYS Designer. I was able to load 1, 2, 3, 4 or 5 value lines which gave obviously wrong filter behaviour.

              EA Support
              27 June 2022 at 2:20 am #499

              Noted.

              EA Support

                EA Support
                27 June 2022 at 2:19 am #498

                Noted.

                EA Support

                  EA Support
                  25 June 2022 at 10:12 am #492

                  We just released 2.4.6 with a comma at the end of every row of the QSC Q-Sys CSV file.

                  Best,
                  EA Support

                    EA Support
                    25 June 2022 at 7:57 am #490

                    Thanks, we’ll add a comma to line ends.

                    I’ve been testing here also. For me Q-SYS Designer (9.4.2) is only loading the first line.

                    Can you confirm that Q-SYS Designer is loading all four lines for you? If the QSYS Designer Custom IIR Block doesn’t look like FIR Designer, and if it has no more than ~180 of phase change across the plot, then it’s only loading the 1st line.

                    Their support page
                    https://q-syshelp.qsc.com/Index.htm#Schematic_Library/filter_IIR.htm
                    shows that the block should be capable of loading multiple lines.

                    Best,
                    EA Support

                    EDIT

                    I realised I needed to set the “Section Count” to the number of rows. With this set, all the lines of the CSV load correctly for me here.

                    Best,
                    EA Support

                    • This reply was modified 4 years ago by EA Support.
                    • This reply was modified 3 years, 12 months ago by EA Support.
                      EA Support
                      24 June 2022 at 11:58 am #485

                      Noted.

                      Best,
                      EA Support

                        EA Support
                        11 June 2022 at 6:30 am #483

                        We’ve confirmed the bug. It will be fixed in the next update.

                        Thanks,
                        EA Support

                          EA Support
                          21 May 2022 at 7:35 am #479

                          Thanks for letting us know. We’ve just updated the update scripts on the website. If you restart FIR Designer, it should give you a link now to 3.3.3.

                          Best regards,
                          EA Support

                            EA Support
                            17 May 2022 at 5:55 pm #475

                            Hi Johnson,

                            The SMAART API grabs the transfer function as complex frequency domain values, with the frequency resolution determined by the current SMAART FFT size. SUT delay causes high phase slope in the transfer function. Further time averaging and frequency smoothing cause the delay to be blurred such that when the TF is converted back to an impulse response, the peak may not be distinct. The only alternative is to grab the impulse response through the SMAART API, and not the TF frequency values. I don’t think the API currently supports this – I’ll check with Rational – so in the meantime you’ll just have to remove SUT delay in SMAART.

                            Best regards,
                            EA Support

                            • This reply was modified 4 years, 1 month ago by EA Support.
                              EA Support
                              17 May 2022 at 11:29 am #472

                              Suggestion noted.

                              BTW in the meantime you can open additional windows (using Project menu -> New Window), load the averaging session file and select a different averaging mode. This way you can compare different modes in different windows.

                              Best regards,
                              EA Support

                                EA Support
                                16 May 2022 at 10:11 pm #469

                                Version 3.3.0 (8 May 2022) added options to show the target phase on the IIR tab and the IIR tab in Second View.

                                Best regards,
                                EA Support

                                  EA Support
                                  22 April 2022 at 7:24 am #466

                                  Sorry, I don’t understand the question. Using boosts or cuts, to push a response toward target, is completely up to the user, e.g. the Mag Adjust tab (and if the target response is visually too high, it can be lowered using the “Zero Adjust” slider). The Auto Mag tab inherently does both boosts and cuts but we are looking at algorithmic changes to give some user control of boosts and cuts independently.

                                  Best regards,
                                  EA Support

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