ChrisHamilton
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- Nov 5, 2023
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- 30
Playing with room control and then testing and tweaking with house curve app. Pretty happy with the results at this point and it sounds quite nice in my small office. 
Room correction
- Thread starter krismusic
- Start date
- Joined
- Nov 6, 2022
- Messages
- 926
Hi harkpabst, Team
We are developing an auto-measurement feature for subwoofer latency, which will be integrated into our auto-calibration process. This enhancement aims to provide a more seamless audio setup experience with your subwoofer. We plan to release this feature for Beta testing by the end of July. Please stay tuned for updates!
Preset your personal reference and the Auto-EQ uses this in its calculation. Like I have an 8dB loss at 8k. So compensate 8dB at 8k.
You can store any Auto-EQ or not Auto-EQ setting. You can adapt it, compare it, it‘s all there!
You guys are awesome.
By far the WiiM Amp has been one of the most satisfying products I have ever purchased.
I was amazed by the 10 band parametric update, then Roon, Room correction and now additional Sub latency. Awesome.
Room eq calibration can really elevate entry level equipment into a league above poorly installed more expensive kit... Amazing to find these options appearing on these already excellent value surprisingly capable products !
Keep the pricing fair and you will hold your customers faithfully as we all expand our WiiM home networks.
Bravo
Hi, perhaps someone can explain how room correction works. Correct me if I’m wrong but it is my understanding that the equalisation should be, to a first approximation, the mirror image of the measured curve, so that the peaks and troughs cancel each other to yield a smooth curve. If this is the case, why isn’t the trough at 50Hz cancelled out?
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Hi,
I'm no expert, but perhaps you have either limited the gain to 10dB or less in the WiiM app, or the EQ cannot correct that dip.
If I am wrong, surely someone else can tell you the correct answer.
Wiimer from Japan are smart people.
The gain was less than the 12db permitted, and I can manually increase the equalisation to further reduce the trough.
Some questions.
1. do you have a subwoofer? If so, what are the crossover frequency, Phase, etc. settings?
2. do you get the same results with multiple RCs?
3. what happens if you narrow the frequency range of the RC to just the bass and measure again?
4. after making manual adjustments, is the sound better than before?
It may be helpful to refer to the RC results posted on this forum by other members. My recollection is that I was under the impression that the WiiM RC did not adjust the bass very extremely well. Unfortunately, I'm an Android user so I haven't used the RC yet, so I am not familiar with the room correction accuracy of WiiM.
@Wiimer, the default on iOS rc was range 40 to 4khz. I did play on this by raising it to 20k and left gain and q on default. I’m not sure if it’s the mic on iPhone that’s incorrect or what but wiim just cut all the treble by sizable amount on flat. It still sound good but cutting treble with multiple frequency and 8 to 10db will make sound a bit dull. The default 40 to 4K sounds awesome. Do you know if I can attach external mic on iPhone and works with rc?
I can't wait to try it myself.
Btw, would the accuracy be further improved if you set the range to something like 40 to 500hz?
I think the lower limit for the iphone's built-in mic is 60hz, right?
In any case, I believe it is difficult to make a perfect correction with auto RC alone.
Someone said they could do that, but I don't think they can do a mic calibration yet.
M y experience is, the iphone mic is pretty accurate and certainly not limited to 60Hz! This would be total show stopper for RC!
RC made my system sounds for the better. I’m normally the kind of person who like to bypass anything that might color the sound like tone bypass but after the correction even it’s was altered not bit perfect but my ear appreciates the changes of its sound character that I left it on. RC maybe coloring the sound that hard core audiophile would disagree that you should listen without altering the original sound or using tone control.
Not sure why RC does not correct the measured curve entirely. However, given the correction curve, the result should be better than the original !
I am sure that later iterations will have the possibility to measure corrected curves as well. Until then, RC can serve as a baseline and you correct manually with EQ at the desired spot, e.g. increase gain at 50Hz by additional 5db and increase q value as well.
Have a look what the graph in P-EQ does if you do that -and- how it sounds…
ELAC Sub Auto Cal
Just some FYI. This is how ELAC does auto calibration with an app. Looks like they take a near field measurement and then a listening position measurement and EQ's off the response difference from the room interaction.
Just some FYI. This is how ELAC does auto calibration with an app. Looks like they take a near field measurement and then a listening position measurement and EQ's off the response difference from the room interaction.
There are
1) Actual measured response of the speaker
2) Applied corrections
3) Predicted response
4) Actual after EQ response
5) Target response, this is what you or the DSP aims to get the speaker closest to, either flat or some kind of house curve
For yours gray is measured response of the speaker. Ideally this will be per speaker measurement, but for the Wiims it's for the L/R pair which isn't ideal as you can get one speaker boosting or cancelling out the other speaker
The EQ curve is the correction curve, what your DSP is actually doing. For example I can see it's boosting 3khz. Boosting is not recommended
Predicted is just that, the predicted curve after corrections. This may be close to actual post EQ measurements but it's only a prediction, you want to run REW after enabling EQ to compare before and after.
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