[EA Support]

EA Support

7 August 2022 at 9:39 pm #531

Thanks. Just restart FIR Designer and it should trigger the link to 3.4.0 now.

Best,
EA Support

[EA Support]

EA Support

5 August 2022 at 7:47 am #528

Hi Bob,

We don’t have a reference. Here’s something (we posted on ProSoundWeb back in January) which may help.

Re the actual averaging modes

• Complex: This is full transfer function averaging. The phase of the cabinet is retained.
• Power (flat, zero phase): This power averages the magnitude only and discards the phase.
• Power (minimum phase): This power averages the magnitude only and discards the phase, then calculates the minimum phase response from the magnitude response. For a single driver in an anechoic chamber, the resulting phase should be very similar to the full Complex average. For a multi-way system with crossovers, this mode gives the cabinet phase response minus the additional or “excess” phase from crossovers.
• Power (complex phase): This power averages the magnitude only then combines this mag with the phase from the Complex averaging mode.
• Power (min. phase + Ref. excess phase): This is the same as the “Power (minimum phase)” mode but the excess phase from the Reference measurement is added in. (The Reference excess phase is the original phase minus the phase from a minimum-phase calculation from the Reference magnitude.) In a nutshell it’s calculating the excess or crossover related phase from the Reference measurement, then adding this crossover phase to a minimum-phase average of all the measurements.
• Power (with complex avg. excess phase): The magnitude is a power average and the phase is the excess phase only. This could be useful for isolating excess or crossover related phase and only correcting this phase. We’re not aware of anyone using this but it was easy to calculate so we thought it worth including.

Best regards,
EA Support

[EA Support]

EA Support

5 August 2022 at 7:39 am #527

Hi Bob,

The session file contains paths and filenames for all the measurement files used in the session. Usually this error message means the measurement files have been moved to a different folder/directory or deleted, and thus can’t be found. If that isn’t the case for you, send your .fda file to info at eclipseaudio dot com and we’ll take a look. Are you on windows or mac? Are the files on the same drive, a different drive or a network share?

Best regards,
EA Support

[EA Support]

EA Support

26 July 2022 at 2:25 pm #522

Good idea. Noted.

Best regards,
EA Support

[EA Support]

EA Support

14 July 2022 at 6:13 pm #518

Hi Eddie,

>> Doesn’t the latency increase if I create only the Magnitude

No. On the Auto Mag tab you have selected a minimum phase filter response. This puts the FIR filter peak at time=0, which you can see on the Export tab and provides essentially no latency. Can I suggest you research FIR filter basics? We have a white-paper at

FIR Filter Guide

while you may find helpful. Also take a look at the tutorials on

FIR Filter Design Tutorials

>> I use 8 measuring microphones to average the response of the room.

The averaged measurement on the Import tab still looks too detailed to be useful. I’d suggest applying some smoothing, either on the Import tab or on the Auto Mag tab.

Best regards,
EA Support

[EA Support]

EA Support

14 July 2022 at 4:50 pm #516

Hi,

I’ve taken a look at your FIR Designer project file. It generates a minimum-phase FIR filter so the approximate delay through the filter is 0ms and is why you’re seeing no roughly the same latency with the FIR on & off.

Also, it’s generating a FIR filtering using the Auto Mag process with no smoothing. This is generally not a good idea. Fine resolution filtering like this may make the measurement position sound better, but will sound a lot worse in all other locations. We recommend some measurement averaging and Auto Mag smoothing.

Best regards,
EA Support

[EA Support]

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]

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]

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]

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]

EA Support

27 June 2022 at 2:20 am #499

Noted.

EA Support

[EA Support]

EA Support

27 June 2022 at 2:19 am #498

Noted.

EA Support

[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]

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 7 months, 1 week ago by EA Support.
• This reply was modified 7 months, 1 week ago by EA Support.

[EA Support]

EA Support

24 June 2022 at 11:58 am #485

Noted.

Best,
EA Support