Hi,
I'm not very busy today and the temperature outside is over 39°C, so I decided to conduct the experiment inside the air-conditioned house
A slightly bizarre RoomFit test.
[Overview]
Perform a RoomFit on each of the two WiiM devices in two different rooms and compare the results of Room A measurements with the microphone in Room A.
In other words, find out if the WiiM in room B can compensate for room A. In my estimation, this is possible. Because RoomFit is running on the WiiM server.
[Test method]
I started working with my favourite earbuds, enjoying the music. The end result looked like this.
[Compare measurement results]
This photo shows the overlaid results of the WiiM A and WiiM B corrections.
1st time
2nd time
The response was slightly different for the 1st test, but for the 2nd it was almost identical. As I expected. The timing of the test tone playback was critical when measuring with the WiiM B. (I failed several times.)
Now I come to the main test.
In the next test, I will use RoomFit in WiiM B to perform MMM in room A.
Before I do that, I forgot to mention that I need to check that the RoomFit evaluation of the WiiM A matches the evaluation by the WiiM Mini.
This is the result of the WiiM A correction.
This is an evaluation by Mini.
Overlap these two sheets.
Almost identical, no problems.
[RoomFit Settings]
Band: 30Hz~4kHz
Gain/Q: MAX
Non-Boost Mode: on
Sub: on (Cross: 120Hz)
MMM: off
Smoothing: 1/12
MMM: on
For the WiiM B MMM measurement, I played my pink noise track file. I increased the volume by 10% during playback to see what would happen. The end result looked like this.
[Compare measurement results]
The results are almost identical, but with a larger dip at 150Hz~200Hz for WiiM B.
Now, incidentally, I also tested Multiple Measurements (MM).
With MM, the test sweep is played back three times, but sometimes it is only played back twice (or once) and unstable. This time I will compare the results when the test sweep is successfully played three times: with WiiM B, I was able to the test sweep is played four times. I will see if this makes a difference.
[Compare measurement results]
No major differences..
To be honest, I was hoping that something good would come from applying this method, but unfortunately it doesn't seem to help at the moment
.
Today's experiment ended in a fiasco..
However, what I have learned once again is that the correction by RoomFit is uneven.
E.g., sometimes it shaved off the 150 Hz peak, sometimes it didn't.
I feel the results would be better if RoomFit could recognise the critical points and compensate for them preferentially. For now, I may need to take several measurements under the same conditions and choose the best one.
Suggestions and advice are welcome.
Thanks for reading to the end
I'm not very busy today and the temperature outside is over 39°C, so I decided to conduct the experiment inside the air-conditioned house
A slightly bizarre RoomFit test.
[Overview]
Perform a RoomFit on each of the two WiiM devices in two different rooms and compare the results of Room A measurements with the microphone in Room A.
In other words, find out if the WiiM in room B can compensate for room A. In my estimation, this is possible. Because RoomFit is running on the WiiM server.
[Test method]
- First, run RoomFit in room A with WiiM A as usual. Room A has a tablet with IMM-6C connected.
- Next, using the same tablet, run RoomFit on WiiM B. At this point, use the WiiM app on another phone to play a test tone from WiiM A.
- Copy the RoomFit profile created on WiiM B to WiiM A.
- Profiles 1 and 2 are evaluated with the WiiM Mini and the two results are compared.
I started working with my favourite earbuds, enjoying the music. The end result looked like this.
[Compare measurement results]
This photo shows the overlaid results of the WiiM A and WiiM B corrections.
1st time
2nd time
The response was slightly different for the 1st test, but for the 2nd it was almost identical. As I expected. The timing of the test tone playback was critical when measuring with the WiiM B. (I failed several times.)
Now I come to the main test
.In the next test, I will use RoomFit in WiiM B to perform MMM in room A.
Before I do that, I forgot to mention that I need to check that the RoomFit evaluation of the WiiM A matches the evaluation by the WiiM Mini.
This is the result of the WiiM A correction.
This is an evaluation by Mini.
Overlap these two sheets.
Almost identical, no problems.
[RoomFit Settings]
Band: 30Hz~4kHz
Gain/Q: MAX
Non-Boost Mode: on
Sub: on (Cross: 120Hz)
MMM: off
Smoothing: 1/12
MMM: on
For the WiiM B MMM measurement, I played my pink noise track file. I increased the volume by 10% during playback to see what would happen. The end result looked like this.
[Compare measurement results]
The results are almost identical, but with a larger dip at 150Hz~200Hz for WiiM B.
Now, incidentally, I also tested Multiple Measurements (MM).
With MM, the test sweep is played back three times, but sometimes it is only played back twice (or once) and unstable. This time I will compare the results when the test sweep is successfully played three times: with WiiM B, I was able to the test sweep is played four times. I will see if this makes a difference.
[Compare measurement results]
No major differences..
To be honest, I was hoping that something good would come from applying this method, but unfortunately it doesn't seem to help at the moment
.Today's experiment ended in a fiasco..
However, what I have learned once again is that the correction by RoomFit is uneven.
E.g., sometimes it shaved off the 150 Hz peak, sometimes it didn't.
I feel the results would be better if RoomFit could recognise the critical points and compensate for them preferentially. For now, I may need to take several measurements under the same conditions and choose the best one.
Suggestions and advice are welcome.
Thanks for reading to the end
