RME ADI-2/4 Pro SE - Auto-measured with Multitone

[pkane]

I don't know if this post is about the extremely nice, new RME ADI 2/4 Pro SE interface or about the new automated measurement capability of the Multitone app

Most of these measurements were done automatically using a Multitone test plan (I'll share in a separate post). This new feature allows a complete measurement script with multiple measurements to be executed, outputting the results ready for publication. More discussion of this script and the details will be posted later in the Multitone testing thread.

The only measurement that's was done the old-fashioned (manual) way is the filter frequency response.

Here are all the steps in the automated test plan:

I measured the DAC portion at 44.1k with ADC loopback at 44.1k. For the higher sample rate ADC captures (DAC filters) I used Cosmos ADC at 192k:

Here are the results:

Phase, Impulse Response

.

Last but not least is the actual test plan that contains all the settings to perform all of the above tests (except for the last filter response one).

 

[dc655321]

No mention of sinad or panthers?
Yawn...

 

[Blumlein 88]

Wow! Quite impressive.

 

[pkane]

No mention of sinad or panthers?
Yawn...

I'll add the automatic panther image selection to the script

 

[Vini darko]

The most asr product? Possibly. I want one .
Thanks for the measurments.

 

[Rja4000]

I don't know if this post is about the extremely nice, new RME ADI 2/4 Pro SE interface or about the new automated measurement capability of the Multitone app

Most of these measurements were done automatically using a Multitone test plan (I'll share in a separate post). This new feature allows a complete measurement script with multiple measurements to be executed, outputting the results ready for publication. More discussion of this script and the details will be posted later in the Multitone testing thread.

The only measurement that's was done the old-fashioned (manual) way is the filter frequency response.

Here are all the steps in the automated test plan:
View attachment 274369


I measured the DAC portion at 44.1k with ADC loopback at 44.1k. For the higher sample rate ADC captures (DAC filters) I used Cosmos ADC at 192k:

Here are the results:
View attachment 274336


View attachment 274353


View attachment 274355

View attachment 274356

Phase, Impulse Response

View attachment 274357View attachment 274358

View attachment 274359

View attachment 274360View attachment 274361

View attachment 274370

View attachment 274362


View attachment 274364. View attachment 274363View attachment 274365

View attachment 274366


Last but not least is the actual test plan that contains all the settings to perform all of the above tests (except for the last filter response one).

Thanks!
I'll give it a try, to see if I'm able to reproduce those.
Also, I'll compare with measurements with my usual tools.

Are those measurements done in mono or stereo ?

 

[morillon]

with of course all the necessary precautions etc.

it is quite remarkable as an automatic procedure for us "amateurs"...
;-)
( the jtest is only for numeric mesureament..no?
;-) )

 

[pkane]

Thanks!
I'll give it a try, to see if I'm able to reproduce those.
Also, I'll compare with measurements with my usual tools.

Are those measurements done in mono or stereo ?

These were all mono.

 

[pkane]

with of course all the necessary precautions etc.

it is quite remarkable as an automatic procedure for us "amateurs"...
;-)
( the jtest is only for numeric mesureament..no?
;-) )

Right! I’ve configured this test for my own set up, it was using WASAPI. ASiO may require changes or additional settings. With a different device, 0dBFS may be too high — in fact -1dBFS was recommended by RME, but I found that 0 works just fine. The Intersample over test required lowering the ADC gain as it was being saturated by the DAC, even though the DAC was handling the signal just fine.

While the same test plan may work fine for other devices, some small adjustments may still be needed .

 

[morillon]

intersample over...
it remains special as a test... enough to be afraid of most of the time...
(i don t see the "filter" on your plan)

 

[pkane]

intersample over...
it remains special as a test... enough to be afraid of most of the time...

But handled easily by this new RME converter, so no need to be afraid

 

[morillon]

ahhhh
if it is to promote rme products.... ;-)
(it remains a test...special...
and a consideration essentially of the professional world for the moment it seems to me ;-) )

 

[pkane]

ahhhh
if it is to promote rme products.... ;-)
(it remains a test...special...
and a consideration essentially of the professional world for the moment it seems to me ;-) )

Just an observation from the measurement, not my opinion.

 

[Rja4000]

ahhhh
if it is to promote rme products.... ;-)
(it remains a test...special...
and a consideration essentially of the professional world for the moment it seems to me ;-) )

Well, if the music you want to reproduce contains such oversamples and you use a DAC that doesn't allow volume change and doesn't handle them well, that will be a consideration for you as well, I think.
Distortion may raise quite abruptly.

 

[morillon]

but it is conditions that I believe are mainly found in the studio, home studio , mastering etc.. right?
because the finished products for the public etc are normally "normalized".. and there is no real reason to come across this type of situation it seems to me...
;-)

 

[pkane]

but it is conditions that I believe are mainly found in the studio, home studio , mastering etc.. right?
because the finished products for the public etc are normally "normalized".. and there is no real reason to come across this type of situation it seems to me...
;-)

Intersample overs exist in consumer music, not just in the studio. There are a number of threads on this subject here already. It’s enough of a problem to at least be curious how a DAC might handle these, but feel free to ignore that measurement if it doesn’t apply to you

 

[Trell]

But handled easily by this new RME converter, so no need to be afraid

If that fact fails to convince there is always this litany from the classic Frank Herbert novel Dune.

>>>
I must not fear.
Fear is the mind-killer.
Fear is the little-death that brings total obliteration.
I will face my fear.
I will permit it to pass over me and through me.
And when it has gone past, I will turn the inner eye to see its path.
Where the fear has gone there will be nothing. Only I will remain.
<<<

Litany Against Fear

The Litany Against Fear was a litany spoken by many highly educated people who faced danger or fear during their everyday lives. The litany helped focus their minds in times of peril. The phrase derives from William Shakespeare's Julius Caesar, “A coward dies a thousand times before his death...

dune.fandom.com

 

[morillon]

links on this subject here .. or on commercialized productions posing problem?i⁷
I admit that I'm not a kid.. and I haven't really met any and digital clipping (not discreet..)
Above all, we must denounce if the work of standardization is badly done. and especially not let the thing settle..
the very, very large majority of general public DACs cannot manage it.. and that is the purpose)

 

[pkane]

links on this subject here .. or on commercialized productions posing problem?i⁷
I admit that I'm not a kid.. and I haven't really met any and digital clipping (not discreet..)
Above all, we must denounce if the work of standardization is badly done. and especially not let the thing settle..
the very, very large majority of general public DACs cannot manage it.. and that is the purpose)

What does this have to do with measuring how a DAC handles a specific test signal? Please post in the threads about intersample overs if you want to discuss that subject.

 

[theREALdotnet]

Thank you for these measurements! I’ve got two questions:

What is DIM? Some kind of intermodulation I gather, but I haven’t seen that acronym before.

The “THD vs Level” plot has me scratching my head. Wouldn’t the noise graph have to be a perfect complement of the distortion graph to make the THD+N such a straight line?