Yeah, I would expect the preference clusters to be the same, however the confounding variable with IEMs would be additional clustering around pinna anatomy. So a class 3 listener with OE might be a class 1 listener with IE depending on the expectation of their pinna effects and so on. How much...

I don't think it's ideal, rather, that's more commonly all that's achievable on open back headphones. There are ways of adding a bass shelf like controlling driver Fs, like with a leak of some kind of front-sealed planars, or introducing an electrical filter, but most don't do this. When it...

I don't have the context for the rest of this but the excess bass on the Harman IE target is at least in part due to the 711 couplers lacking the accurate acoustic impedance. This was also confirmed in Dr. Olive's recent talk at CanJam NYC, as the IE work is currently in the process of being...

Well... my takeaway from it was more that conventions around THD and intermodulation distortion did not line up with subjective reports, and it made more sense to use newer, better correlated metrics. But if you say that's to reinstate older work, by all means I'm fine with that too. My point...

Sure but as the paper I linked above from 2007 indicates, the existing norms around audibility for nonlinear distortion products were based on metrics they found to be insufficient. I don't know yet what that means, but to say this is a closed topic because of work done in the 1930s... I'm not...

Yeah, I mentioned this in the other thread but our audio engineer Blaine gave a presention at two canjams now that effectively mythbusted this notion by showing how the harmonic content of music comprises the same measured response you get from a sweep or an FFT. I'll post it here once that's...

I mean we have the work from Temme and GedLee on some of this stuff but if you have a paper on audibility thresholds for given distortion products across individual listeners by all means I'd love to see it. Like if there's something else to reference I'd love to be able to. Edit: there's also...

It would probably depend on the rest of the measured response, like if there's an effect on FR, OI and so on. But, supposing all else is equal, I suspect the sound would be identical in blind A/B tests for most people. Like 70dB is a lot lower, and provided the harmonics are within the masking...

When it comes to this type of stuff, the question usually becomes, at what point is it audible? And the problem there is that the answer is a bit of a moving target because it'll likely depend on the individual. It's kind of similar to harmonic products in general, because in practice... you...

So we're not actually using a tilted DF target - maybe you're already aware but just wanted to clarify. We're calibrating the response to the flat DFHRTF for JM-1, which is an approximation of population average pinna effects and canal transfer function, and then showing that relative to the...

We talk a lot about measurements, but at the end of the day it's the experience that counts, right. So I won't say this is necessarily how it should be for everyone, but for what I personally enjoy most these days, it tends to work out that way yeah. And by no means will I say I have all the...

I sort of stopped thinking about it as 'detail' specifically, and started thinking about it in terms of like... what do I enjoy. For me, it's about fixing the issues with the response (for any IEM) that don't jive with my anatomy. So I would actually say that provided the HRTF features my brain...

I was hoping this would be understood to be a joke. It's actually a batman reference: "You either die a hero or live long enough to see yourself become the villain" Very much a joke.

You either die an audiophile or live long enough to become a squiggly science guy :D I'll see myself out.

I would go as far as to say that as long as other metrics are similarly not having an audible impact, so like if harmonic distortion is below the audible threshold in both cases - they wouldn't need to be equal. Where that threshold is, however, I'm not entirely sure. But the same for things...