Beta Test: Multitone Loopback Analyzer software

[DrCWO]

Guess I did not understand how to display the two recorded stereo channels one in Red and one in Blue.
Seems I see the Generator in Red and the Measurement in Blue in my last post.
Is there a chance to see the two Stereo channels recorded in one diagram and omit the generator output?

My goal is to have a comparison between the 1:1 loopback in the left channel and the loopback with a device under test in the Loop in the right channel?

 

[pkane]

Hi Paul,
I'm on 1.2.9 now as I can't access the link above.

I have made some progress so level ist OK now. I run the ADI-2 pro FS R with -0.5dB volume and +24dBu output level. I now run one test after the other to see which gives reasonable results. I run in STEREO mode as my idea is to have one channel in 1:1 loopback and the other with the device under test inserted in the loop. This makes sense to me as in this mode I can compare the changes the device under test creates.

Last I ran TD+N vs frequency (only) all other tests are not checked in the list. At the end of execution I get the error message attached.
The legend in the generated diagram also looks strange. For the left channel it says THD for the right TD+N. Seems somehow odd to me.

I added my current configuration to enable debugging for you.

Best DrCWO

EDIT:
With THD vs Level I see the same wrong legend saying THD (Left) dB and TD+N (Right) dB. Same Error Message after the measurement was saved here and quite a strange result comparing Right and left...
View attachment 461300


View attachment 461293

That last error message should go away with the new version. Can you download from Dropbox?

https://www.dropbox.com/scl/fi/ljeu...ey=ujiisqs1la9ifeshdvxwp7f3k&st=7xpi7mss&dl=0

 

[pkane]

Guess I did not understand how to display the two recorded stereo channels one in Red and one in Blue.
Seems I see the Generator in Red and the Measurement in Blue in my last post.
Is there a chance to see the two Stereo channels recorded in one diagram and omit the generator output?

My goal is to have a comparison between the 1:1 loopback in the left channel and the loopback with a device under test in the Loop in the right channel?

You can change the measurement displayed by selecting it as Measurement 1 and Measurement 2. If you select THD for both, one will be Left the other Right channels (just make sure you select L+R for the audio input channel selector):

 

[DrCWO]

That last error message should go away with the new version. Can you download from Dropbox?

https://www.dropbox.com/scl/fi/ljeu...ey=ujiisqs1la9ifeshdvxwp7f3k&st=7xpi7mss&dl=0

Downloaded an installed v1.2.12 now. THD+N runs fine now. Also understood the stereo thing and can create reasonable result here

Run all my tests in the script now one by one. If they all pass I will start to run the complete batch.

Thank you and I'll report back

Best DrCWO

 

[DrCWO]

I saw a strange error message running IMD SMPTE vs Level.
Added my settings so you can try to reproduce...
Also the response looks strange.
The strangest thing: I can't reproduce it

 

[DrCWO]

Without the error message output looks much better. This was my second try with the same settings.

 

[DrCWO]

Without the error message output looks much better. This was my second try with the same settings.

Ok, all the tests have passed in single execution mode now with the exception described above.
I will run the complete script tomorrow and see what happens.

Here two quick ideas for further improvements:

1. Starting of Multitone takes quite a while on my i7. Therefore sometimes I did not know if the double click was caught by Windows or not. A splash screen displayed directly after startup would be great to get quick feedback..
2. It would be helpful to see a checkbox to enable or disable the complete list of tests with one mouse click.

Best DrCWO

 

[DrCWO]

I started the complete sequence this morning.
Saw the error again after processing Log Sweep FR (4M). Also the result seems odd...

 

[DrCWO]

Restarted the sequence at Log Sweep FR (4M). No issues here. But I saw the same error at end of DIM 30 test again.
Hope this helps fixing the issue.

Also added the latest settings of the test script

Best DrCWO

 

[DrCWO]

I restarted the whole script again.
Same issue and error message as I posted here. Seems to be reproduceable maybe also on your system