Is Room Correction an iterative process?

[guy48065]

After a measurement sweep & analysis you're offered the choice to retest. When you click "Adjust Again" does it refine the previous result--or just discard the data & start anew?

 

[Swann36]

After a measurement sweep & analysis you're offered the choice to retest. When you click "Adjust Again" does it refine the previous result--or just discard the data & start anew?

Great question

 

[Wiimer]

After a measurement sweep & analysis you're offered the choice to retest. When you click "Adjust Again" does it refine the previous result--or just discard the data & start anew?

I believe it is the latter, but the answer should be readily apparent by comparing the measurement results (Grey line).

 

[guy48065]

I haven't been able to tell the difference with multiple passes--but I have a horrible room that might defy "refinement".

 

[slartibartfast]

After a measurement sweep & analysis you're offered the choice to retest. When you click "Adjust Again" does it refine the previous result--or just discard the data & start anew?

One annoying thing about "adjust again" is that you can't access the settings for room correction before "adjusting again"

 

[guy48065]

One annoying thing about "adjust again" is that you can't access the settings for room correction before "adjusting again"

Manual tweaks would be nice.
How about a checkbox next to each band to "lock" it?

I was fiddling around with stacked subs yesterday and had limited the correction spectrum to 20-800Hz. The PEQ did a nice job of flattening and extending my response down to about 25Hz.
Then I did a full-spectrum pass and ALL the PEQ bands under 80Hz were reassigned to flattening my higher-frequency problems. Bass extension is now gone.
I guess manual adjustment using other SW (like REW) is the only way to get what YOU want.

 

[keiron99]

Manual tweaks would be nice.
How about a checkbox next to each band to "lock" it?

I was fiddling around with stacked subs yesterday and had limited the correction spectrum to 20-800Hz. The PEQ did a nice job of flattening and extending my response down to about 25Hz.
Then I did a full-spectrum pass and ALL the PEQ bands under 80Hz were reassigned to flattening my higher-frequency problems. Bass extension is now gone.
I guess manual adjustment using other SW (like REW) is the only way to get what YOU want.

Can I please ask why you would limit the correction spectrum to just a certain frequency band?
I’m trying to set up my new ultra and have a subwoofer connected too. There is a toggle switch in the Room Correction settings for subwoofer calibration. Again, why would one NOT want the Wiim to calibrate it?
Is there an implication that the software is not capable of handling frequency extremes?

 

[steadyshot]

If refine= take average that would be a good practice

 

[slartibartfast]

If refine= take average that would be a good practice

Average of a few different sweeps from different positions would be good, if we can trust each sweep to be accurate. At the moment I often see a big difference between repeated sweeps measured in the same position.

 

[steadyshot]

Average of a few different sweeps from different positions would be good, if we can trust each sweep to be accurate. At the moment I often see a big difference between repeated sweeps measured in the same position.

Those extremes are meant to be smoothed. If the measurements are very near with each other averaging would not matter.

 

[slartibartfast]

Those extremes are meant to be smoothed. If the measurements are very near with each other averaging would not matter.

The difference I see isn't due to a slight difference in position. It is just a flawed measurement for whatever reason. Including that in any average wouldn't be helpful.

 

[steadyshot]

The difference I see isn't due to a slight difference in position. It is just a flawed measurement for whatever reason. Including that in any average wouldn't be helpful.

How do you know it is not a reflection or something like this that gives this difference and you say the measurement is flawed ?

 

[slartibartfast]

How do you know it is not a reflection or something like this that gives this difference and you say the measurement is flawed ?

Because I have my sub set to +5dB and know the room correction needs to cut the bass. On some sweeps the recorded bass response needs a boost when measured from the same spot. I get the impression that if I manually disable the EQ before doing a sweep then the measurement is correct but can't be sure.
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