Room correction

[MCG555]

Has anyone compared iphone/ipad inaccuracy to calibrated mic? Would be interesting seeing a few samples, compared to umik1

What's the point of room correction if the mic is inaccurate, poor accuracy across the range, etc.

Iphone mic isn‘t poor at all. Mentioned in other threads that e.g. it is partly certified by swiss local authorities to do environmental sound measurements for legal purposes…

 

[Brantome]

Cheapaudioman has just posted this re room correction…

 

[D1N0]

So when your listening position has poor cancelled out bass room correction will make your speakers bounce of their stands in an effort to correct it?

 

[MCG555]

He is right! WiiM set´s a new standard regarding meeting customer expectations!

 

[harkpabst]

ThiSo there is no manipulation within the time domain but only in the frequency domain? That's no "Room Correction" then, but auto EQ. Would be nice, though, if one could preset certain values for the auto EQ. Like, I have hearing loss starting at 4K, which means, that a flat curve is not what I want. It would need to compensate.

What's your definition of room correction, then? We have a two channel setup here, where the left and right speaker are usually placed equidistant in the MLP. The only thing that might need adjustment in the time domain is the subwoofer.

WiiM do not attempt to set that delay automatically, but you can adjust it manually . They are in good company keeping it like thata. It's e.g. the same with $$$$ stereo amplifiers sold by Lyngdorf.

If the speaker has time domain issues, one might try to solve this using DSP, but it could hardly be called room correction then.

Has anyone compared iphone/ipad inaccuracy to calibrated mic? Would be interesting seeing a few samples, compared to umik1

What's the point of room correction if the mic is inaccurate, poor accuracy across the range, etc.

This is the same issue for all products and has been discussed over and over again. We don't need absolute calibration, but we do need a calibration for linear response, yes.

 

[Brantome]

"If you only see something through rose-coloured glasses, the red warning lights look like normal lights."

“Looking a gift horse in the mouth” has sprung to mind on several occasions in the forum when free upgrades to very modestly priced streamers like the Pro and Plus are criticised and negatively compared to software costing three or four figure sums. But I guess that’s human nature

 

[D1N0]

Do I get a free iPhone too? Otherwise it is not a free upgrade

 

[Bismarck]

Has anyone compared iphone/ipad inaccuracy to calibrated mic? Would be interesting seeing a few samples, compared to umik1

What's the point of room correction if the mic is inaccurate, poor accuracy across the range, etc.

My understanding is that iPhone mics have a quite consistent frequency response, generally speaking.
This allows a quite consistent calibration in the apps that use them: this is the case in HouseCurve and the WiiM Home app, for example.
On the other side, mics that have an individual calibration file, such as umik1, need a way to upload their calibration file to the apps that use them: this is indeed the case for HouseCurve, but unfortunately not for the WiiM Home app, at least at the moment.
So, IMHO, comparing today the results of RC in the WiiM Home app between iPhone mics (for which the app is calibrated) and umik1 (for which it is not) is moot, until the upload of individual calibration files will be possible.
Just my humble, and probably wrong, opinion...

 

[rccarguy]

My understanding is that iPhone mics have a quite consistent frequency response, generally speaking.
This allows a quite consistent calibration in the apps that use them: this is the case in HouseCurve and the WiiM Home app, for example.
On the other side, mics that have an individual calibration file, such as umik1, need a way to upload their calibration file to the apps that use them: this is indeed the case for HouseCurve, but unfortunately not for the WiiM Home app, at least at the moment.
So, IMHO, comparing today the results of RC in the WiiM Home app between iPhone mics (for which the app is calibrated) and umik1 (for which it is not) is moot, until the upload of individual calibration files will be possible.
Just my humble, and probably wrong, opinion...

You could compare REW UMIk response, to the Wiim app response, overlay the two/ rescale to fit, and see how far the Wiim results are.

 

[Bismarck]

You could compare REW UMIk response, to the Wiim app response, overlay the two/ rescale to fit, and see how far the Wiim results are.

At the moment, you cannot obtain or save the Wiim app response, but only briefly see it just after applying RC.

 

[alpha_zulu]

Do I get a free iPhone too? Otherwise it is not a free upgrade

Almost every household I know has at least one iPhone. (we have 2 and 2 iPads). Otherwise, ask a friend to lend it to you for a short time. You don't need it permanently.

 

[slartibartfast]

Almost every household I know has at least one iPhone. (we have 2 and 2 iPads). Otherwise, ask a friend to lend it to you for a short time. You don't need it permanently.

Every household I know has Android.

 

[alpha_zulu]

That's a quite first world statement

Why? IPhones I saw all around the world.

 

[alpha_zulu]

Every household I know has Android.

We have one Samsung android also. I don‘t like it compared to my iPhones.

 

[alpha_zulu]

WiiM says they are working on an Android version for the magical RC. I know many, many die hard Android users who would prefer a root treatment than asking an Apple owner for borrowing

Because they are afraid to realise how easily things can work?

 

[slartibartfast]

We have one Samsung android also. I don‘t like it compared to my iPhones.

Well I am sure other Android users feel the opposite.

 

[alpha_zulu]

Well I am sure other Android users feel the opposite.

You're right. Some people see it that way, others see it differently. Back to the topic.

 

[steadyshot]

What's your definition of room correction, then? We have a two channel setup here, where the left and right speaker are usually placed equidistant in the MLP. The only thing that might need adjustment in the time domain is the subwoofer.

WiiM do not attempt to set that delay automatically, but you can adjust it manually . They are in good company keeping it like thata. It's e.g. the same with $$$$ stereo amplifiers sold by Lyngdorf.

If the speaker has time domain issues, one might try to solve this using DSP, but it could hardly be called room correction then.


This is the same issue for all products and has been discussed over and over again. We don't need absolute calibration, but we do need a calibration for linear response, yes.

Regarding the time domain adjustment it is particularly useful when integrating a sub however with speakers it is also very beneficient since the room itself which in many cases is not symmetrical and it consists of different materials that each one causes reflected sound to arrive at different times at the listeners ears. That can cause smearing and phase distortion which you only understand when you correct for it at the time domain and have a sound that is relaxed and clear even at very high volumes … you understand the results of room correction with the absence of fatigue

 

[harkpabst]

Regarding the time domain adjustment it is particularly useful when integrating a sub ...

WiiM have that covered, even if not automatically.

however with speakers it is also very beneficient since the room itself which in many cases is not symmetrical and it consists of different materials that each one causes reflected sound to arrive at different times at the listeners ears. That can cause smearing and phase distortion which you only understand when you correct for it at the time domain and have a sound that is relaxed and clear even at very high volumes … you understand the results of room correction with the absence of fatigue

Still, there's no way of correcting the direct sound and reflections independently. Also, corrections made at higher frequencies might be beneficial right in the MLP but are likely to turn into the opposite just a couple of inches away. A bit of care taken with speaker setup and toe-in is certainly rather more effective, as long as WAF doesn't get into the way. Non-symmetrical rooms/speaker placement is why I'm waiting for per-channel PEQ, though.

 

[D1N0]

Almost every household I know has at least one iPhone. (we have 2 and 2 iPads). Otherwise, ask a friend to lend it to you for a short time. You don't need it permanently.

And you think People who own iGear would be My friends?