Ongoing Beta Beta Test: Precision Room Correction with FDW (Frequency-Dependent Windowing)

[slartibartfast]

What reaction time is defined in our SLA with WiiM?

It's just annoying that the feedback is only one way and seems to disappear into a black hole. Now they know it doesn't work why not remove the feature until it does?

 

[hgo58]

It's just annoying that the feedback is only one way and seems to disappear into a black hole. Now they know it doesn't work why not remove the feature until it does?

Yes. I have stopped doing beta testing as I have spend time on testing and doing feedback with no response and none of the feedback getting into production.

So wast of my time.

 

[hoohoohoo]

Yes. I have stopped doing beta testing as I have spend time on testing and doing feedback with no response and none of the feedback getting into production.

So wast of my time.

It makes sense to step away. I've never bothered with the betas for the same reason that it's hard to get traction unless you're in the company and can advocate for your feedback.

 

[Maurizio]

It should be obvious that more feedback from beta testers is always helpful to speed up the development.

Personally, I also didn't install this beta firmware because the WiiM Ultra is in the family's living room now, not in my listening room. I just cannot play around with it as much as I would like to anymore.

Since we're not actively supporting the progress here we probably need some patience with those who do.

 

[Wiimer]

This is an problem we've discussed many times before, and I think it's a not good habit of the WiiM team.

But
in their defense, they're probably too busy. All WiiM products are low-margin and low-margin, yet they spend more time on after-sales support than any other audio companies.

The engineering and support members are small and have to deal with all kinds of problems, working almost 24 hours a day without sleep.

They must all have bladder infections because they don't have time to go pee. They have no time to eat properly and have lost 5kg in the last month. Some of them are starting to show early signs of diabetes from eating too many doughnuts. Tragic!

Of course, this is just my imagination of what the scene looks like.

 

[Vladetz]

My results: standartd vs FDW
FDW measuremet again seems to boost low frequencies, so equalization cuts then

 

[Musician]

A good room correction program needs to separate frequencies below shroeder frequency and above it . It demands different measurements techniques and microphone placement for different frequencies and cant be done fullrange from listening position. This is a fact and it needs to be understood by users and developers.

Maybe it could be a good idea to introduce gating techniques for corrections of the speakers , measured near each L/R speaker, one at a time , at 300 Hz -20000 Hz ?

And maybe introduce one room correction graph 20-300 Hz , measured from listening position, and one measurements graph with gating 300-20000 Hz made for closer microphones measurements of each speaker ?

Measurements and corrections above 300 Hz needs measurements nearer only one speaker at a time, because of the precedence effect. By introducing gating techniques above 300 Hz it would be possible for many people to correct 300-20000 Hz in normal living rooms if measuring 1 meter from each speaker.

It seems like WiiM with FDW is trying to make roomcorrection fullrange 20-20000 Hz from listening position like dirac does it. Unfortunately it doesnt work ( not for dirac either ) above 300-500 Hz, where one needs to do measurements with gating technique near each loudspeaker.

If WiiM could do this , separate the needs for different measurements tecniques between 20-300 Hz, and 300-20000 Hz, (or 20-500 Hz for some SBIR corrections , and 500-20000 Hz, ) it would be very advanced and it would work even better than Dirac. It would be as advanced as REW and simply sensational for the price.

This would demand three measurements ( one from listening position 20-300 Hz , and at least one for each speaker 1 meter from each of them using gating technique 300-20000 Hz )

WiiM team - read more here how to do it from the Swedish acoustical expert I-or:

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