Surprisingly good roomcorrection implementation in the WiiM ultra

[Musician]

I will definitively try the HARMAN curve.
What about the smoothing setting?

If you ask me, 1/6 is more like what the ear hear and 1/12 is more exact than the ear.
In my opinion, try both and select the one you think sound best. Regarding Q values, i put it at max Q=6 . Q values higher than this is very hard to hear.

Recently , following a fantastic thread at the Swedish forum faktiskt.io , I took advice from one skilled acoustical expert ( I-or ) and also corrected some SBIR up to 500 Hz from listening position, allowing some corrections at +5 dB . This has generated a better listening result for me .

Try it and use it if it sounds better to you. When using corrections +5 dB , its important to set the digital output limit in the ultra at 85% to avoid digital clipping.

Here is the thread, Google translate is your friend

faktiskt.io • Visa tråd - Mätningar för ekvalisering

 

[EddNog]

If you ask me, 1/6 is more like what the ear hear and 1/12 is more exact than the ear.
In my opinion, try both and select the one you think sound best. Regarding Q values, i put it at max Q=6 . Q values higher than this is very hard to hear.

Recently , following a fantastic thread at the Swedish forum faktiskt.io , I took advice from one skilled acoustical expert ( I-or ) and also corrected some SBIR up to 500 Hz from listening position, allowing some corrections at +5 dB . This has generated a better listening result for me .

Try it and use it if it sounds better to you. When using corrections +5 dB , its important to set the digital output limit in the ultra at 85% to avoid digital clipping.

Here is the thread, Google translate is your friend

faktiskt.io • Visa tråd - Mätningar för ekvalisering

I thought somebody said that for every +3dB, you need to reduce 5% on output limit, so +5dB would need to reduce 10%. Or were they wrong?

-Ed

 

[slartibartfast]

I thought somebody said that for every +3dB, you need to reduce 5% on output limit, so +5dB would need to reduce 10%. Or were they wrong?

-Ed

They were right. You also can't assume that because the gain is limited to +5dB for each filter that overall gain will be 5dB. You still need to calculate the headroom required with REW EQ being a common method.

 

[dominikz]

I thought somebody said that for every +3dB, you need to reduce 5% on output limit, so +5dB would need to reduce 10%. Or were they wrong?

-Ed

The volume to dB relationship is not linear, you can see here (link) how volume in % corresponds to digital output in dBFS in my WiiM Mini:

The same relationship is valid for volume limit as well, and the same relative changes in level apply for the analog output too.

I can't claim that the same is valid for all WiiM devices as I only measured it on the Mini - but I suspect it could be.