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I don't know if anyone knows, I can only guess as written: Two audio sources are panned left and right. How wide is the stereo image?
They implement two audio sources from the same instrument, each a bit different, and pan them to each's own channel. That is fact.
1 ) Afterwards, my guess is that they probably use a plugin / algorithm to change the mid/side correlation by messing with the phase at a certain amount (as you do with mid/side config).
You declare that amount with the game UI. The click of the mouse sends your answer from 0 to 1 and checks if its in the boundaries of the actual answer.
2 ) They could also do something different and simpler, and actually pan 2 almost similar mono sources by an amount and the same idea goes with you choosing the answer, and the game checks if its in the boundaries.

I am not very knowledgable in the topic, you could send them a support ticket if you really want to know (If they'll even tell you, but you can try). Cheers.

yeah, I already know what could have been done. I might just add:
- there is no difference in volume, and
- the basis is one track, not two different tracks played two times, adding random subtle differences, as ChatGPT suggested.

also, I don't think there is a delay added to just one of the channels, I tried that and than feel different, you can feel a direction there, nor there is a different reverb or distortion, as far as I can tell — but this is just my guess

My guess is they don't do anything to make it wide. It's very likely an already wide sound that they are making mono by some arbitrary percentage.

Logic comes with a stock tool called Directional Mixer that will do this so I've never had to use a 3rd party tool but apparently Boz has a free plugin called Width Knob that will do the same thing.

Creating width artificially is, in my experience, always noticeable. Width is the difference between left and right. If two things are algorithmically different', our brains are pretty tuned to notice that.

Narrowing a sound, however, is very transparent. The sound simply seems like it's coming from a more specific direction rather than being unnatural.

Hope this helps!

Congrats Stefan! ⭐⭐⭐

Congratulations, Stefan!

it's essentially just a software theremin, more of them, with some filters

Thanks for sharing these, @Cuantas Vacas and @Romano G! Fascinating!

wow

Awesome job everybody!

Nice work! Congratulations!

Way to go, Arijay! Congrats, and on to your Diamond Ears!

Arijay!!!! Let's go!!!

Fantastic!

Congratulations!

Congratulations! Way to go, winning your Golden Ears!

I used to do the same as you ... switching on/off several times. Now I listen for a bit with EQ on, then switch it off, move to the eq zone I think is affected then switch it back on one more time to confirm.

It never occurred to me that I wasn't getting the most from the game until someone else mentioned that the idea was to be able to detect what is missing not just which frequency pops up when the filter is turned off. So now I listen, make an assessment of what is missing, then turn the filter off for confirmation before I make my guess. I find that the game is pretty challenging for that initial assessment. I don't know of any tricks that will make it any easier, it's just a matter of time/training.

Ditto. I also pick the same instruments for my workout. So like today is piano day, or brass day. I do live sound mixing more than composing or producing so I can hear it in the PA but don't really know the frequency I am playing around with. But just hearing one instrument, in all the games or choosing the same instrument for all the games where I am struggling has really focused me. I think I did Kit Cut on Piano for like two weeks. I also use the interactive frequency chart to help zero each instrument when I have surprise client changes. Cheers

Excellent job!

Way to go, Val De! That's fantastic!

Excellent work!