RoomFit Moving Mic Measurement (beta) - improvements

[Wiimer]

Did I read somewhere that you could turn off the rotation of the phone when using a USB microphone? I just tried MMM and couldn't find a way to turn it off.

Yeah, I just checked and the button was gone...

 

[Bismarck]

Today I tried RoomFit Moving Mic Measurement (beta) with the latest improvements on my Amp Ultra, using an iPhone 17 with an external UMIK-1 microphone.
The instructions in WHA say to point the microphone upward.
I’m wondering whether I should use the normal calibration file or the 90-degree one?

 

[canard]

90
(Just for that reason...with calibrated microphones without a 90-degree angle, stick to "low frequency" measurements in this situation)

 

[slartibartfast]

Today I tried RoomFit Moving Mic Measurement (beta) with the latest improvements on my Amp Ultra, using an iPhone 17 with an external UMIK-1 microphone.
The instructions in WHA say to point the microphone upward.
I’m wondering whether I should use the normal calibration file or the 90-degree one?

I just pointed the mic towards the speakers. If you do point it upwards use the 90 degree cal file.

 

[Bismarck]

I just pointed the mic towards the speakers. If you do point it upwards use the 90 degree cal file.

I wonder why WiiM advice to point it upwards... Why did you point instead the mic towards the speakers?

 

[slartibartfast]

I wonder why WiiM advice to point it upwards... Why did you point instead the mic towards the speakers?

I always point the mic towards the speakers. I suppose it depends on the area you want to cover with the moving microphone. I just moved a metre sideways between the speakers.

 

[dominikz]

Today I tried RoomFit Moving Mic Measurement (beta) with the latest improvements on my Amp Ultra, using an iPhone 17 with an external UMIK-1 microphone.
The instructions in WHA say to point the microphone upward.
I’m wondering whether I should use the normal calibration file or the 90-degree one?

Have a look at this post:

Have a look at this explanation, and these examples.

But note that either orientation is actually equally OK in room correction context - as long as you use the correct calibration file (90° cal for vertical orientation, 0° cal for horizontal orientation).

 

[canard]

Hey... I'd be curious to know how the Dayton behaves at 90 degrees...?
Could you make a precise observation from 70cm center of the tweeter and then again at 90 degrees, fairly accurately, in the same spot?
And what about its behavior above 2kHz in particular?
;-)
(one of my omnidirectional devices dedicated to measuring the drop from 3.5kHz to 90, another one of the 6kHz classical...Staying below 1kHz seems relevant and reasonable.)

 

[Fletcher Munson]

I’ve been using the new moving mic option today with my umik-1 microphone today and results are much better than the sweep and internal phone mic

 

[harkpabst]

Hey... I'd be curious to know how the Dayton behaves at 90 degrees...?
Could you make a precise observation from 70cm center of the tweeter and then again at 90 degrees, fairly accurately, in the same spot?
And what about its behavior above 2kHz in particular?

Dayton Audio says they don't need a 90 deg calibration file because the mic is "omnidirectional". At least that's what they want us to believe.

I'll be testing this shortly. And I bet there will be a difference above 2 kHz.

 

[Bismarck]

Have a look at this post:

I therefore infer that, by taking measurements with the microphone pointing upward (using the 90-degree calibration) and positioned at a listening point approximately 250 cm from each speaker, the high-frequency portion of the spectrum will likely measure a couple of decibels higher than a measurement taken from the same point with the microphone aimed at the center of the speakers (using the 0-degree calibration). Is that correct?
You argue that this is irrelevant, since you take it for granted that RoomFit should be used only to equalize low frequencies. But if the equalization were instead extended to the high frequencies as well (which you consider incorrect), the difference could be relevant. Is that right?