Vector Audio Scope Issues / Questions (Page 1 of 2)

- Example: https://www.youtube.com/watch?v=PJAsz6VCf5A 
   - Example: https://www.youtube.com/watch?v=VUPOvcolNZg

3. M/S Phase Meter disappears entirely 
   - Example: https://www.youtube.com/watch?v=ghvmiM4DjM0

2. M/S Phase Meter in the negative range 
   - In these videos (https://www.youtube.com/watch?v=f60dheI4ARg and https://www.youtube.com/watch?v=JooKrvj2EPg), the M/S Phase Meter reads in the negative range. What does this indicate? Is it due to poor recording techniques, subpar post-processing, or issues with file encoding?

3. Predominant upper-half range on XY axis during speech 
   - In this video (https://www.youtube.com/watch?v=KodKUYHSp88), when James Spade speaks, the line is mostly in the upper half of the XY axis. What causes this behavior?

Feature Recommendation

It would be incredibly helpful if future DigiCheck updates included clear “Left” and “Right” labels on the Vector Audio Scope for easier reference.

Thank you in advance for your assistance and insights.

Absolutely d'accord.

What makes you think that the videos demonstrate "bugs" in the software and not specific characteristics of the audio content in these videos? Your third example is probably just a DC offset (haven't watched it, but that's my first assumption).

[Edit: signal shows significant L/R channel imbalance]

Example 1
Maybe it is not mono. Have you checked, that it is mono? Or do you just assume/guess it is mono?

Have you tried analyzing these signals with other similar tools and found significant discrepancies?

That does not necesarily mean, that it is exactly mono. Just, that it is very close to mono. You have to compare signal sample by sample and samples have to be all exactly the same. Otherwise it is not mono. There might be slight differences that show up in M/S.

why should anyone take their time and go to a commercial site that you linked? You brought up a case and it's up to you to provide instructions and files to reproduce it.

Commercial site or not has no bearing on what im experiencing. I have produced clear instructions already.

It looks like clickbait

Do you honestly think im clickbaiting you by posting on an esoteric audio interface forum regarding possible bugs?

you should upload the video/audio files you use as examples to another service

So you want me to commit copyright infringement instead of just opening the youtube video whilst looking at DigiCheck

In an alternative universe im an paid employee of Conan O'Brien, Audio Animals Studio, Adam Carolla, Jay Leno, Norm Macdonald who has been tasked to increase their Youtube presence via posting Youtube links on an esoteric audio interface forum. Smh

This has got to be the most unsupportive help ive ever experienced via a company / forum.

All you have to do is open a youtube video and look at DigiCheck, it really isnt that difficult.

Or mybe this is a case of RME not being able to fathom that they do actually have bugs in their software.

With all due respect, I'd say you haven't really established why you suspect what you are seeing are bugs in the software (that went unnoticed for years and years) and not actually correct representations of the audio signals in question. To do so, it would help if you could provide some comparison demonstrating that other software shows different results.

By the way, why didn't you post screenshots of what Digicheck is showing along with each link to a video?

Because your being so unhelpful im now going to create a youtube video that proves your wrong.

w

Comparing DigiCheck (or is it DigiCheck NG?) with an iPad is a bit of a stretch. DigiCheck [NG] is a free software tool that is provided "as is" and is not part of the purchase contract for your RME product nor it is an essential software that a product relies upon for its normal operation.

So if you want it to be improved, you need to make your case somewhat stronger compared to an obviously malfunctioning consumer product. And it's not that RME are unwilling to improve it; it's just that you need to be clear and patient. If there is indeed a bug, it probably will be fixed, however RME does not have to give us any promises here.

Regarding links to YouTube and your argument about copyright infringement, why do you bother to use DigiCheck on a finished other's work then in the first place? It's intended to be used as a tool for your own work. So in this case it would be better if you set up a proper, controlled test using your own facilities. Thus we could rule out any errors in the source chain.

Your first issue is that you are assuming instead of investigating.

You assume, Video 1 is mono. And based on that assumption you are reasoning that there is the bug in DigiCheck....

Should not be the very first step to assure yourself, that the signal is really mono?

Again, you don't have the latest version, the latest version is 0.93 release, you are still using 0.93 beta 5...

If you can't pronounce my name, why bother spelling it out like this?

In the first example, you are replying to yourself - the signal is "just about" mono, but not perfectly. In the other examples, the signal is perfectly mono. If it's mono, there is no S component and the meter won't show anything.

In that CIA video, the meter "disappears" because the audio changes from (stereo) music to perfectly mono speech again. See above. And the last example has a significant channel imbalance... Clearly visible in the stereo level meter. Try balancing it out somehow and see what happens.

None of this indicates any bug whatsoever. Everything can be explained with audio basics.

Not at all, I just asked you to substantiate your claims...

Yes, just watched your vid, no bugs at all that I can see, this is just how a Vector Scope works, and it's accurately showing what the audio is doing. Maybe give the DC NG help doc a good read.

I understand that, but why should M/S display a line if the meter says zero.

Because apparently there is still a small residue of "stereo" that triggers the meter sufficiently to cause a reading.

The Digicheck help and I'm sure there's lots to be found on the internet with the help of your favourite search engine. Not sure I'd recommend asking AI, though...

If you visit here,
https://samples.kb6.de/downloads.php

and download
Ace Tone Rhythm Ace

and playback the files why is it showing anything in M/S mode when they are clearly mono

Which contradicts,

Because apparently there is still a small residue of "stereo" that triggers the meter sufficiently to cause a reading.

I think it's safe to conclude that there is no issue. If Digicheck still shows something, then the signal just isn't all that perfectly mono, apparently.  We still don't know the input selection you've configured here.

You can subscribe to forum feeds and individual threads.

And what exactly is showing up where and what's the exact signal path?

A screenshot would be helpful.
What's the input selection in Digicheck? Are you measuring playback signal?

Which image exactly? Have you activated Loopback?

I see (static?) flat line and the level display showing "UFL", i.e. no signal.