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You are correct! I have absolutely no data on how eardrum impedance skews these results nor how that skew between listeners’ eardrums relates to the spread of variation between listeners’ HRTFs. Definitely would be an interesting thing to study.

I will say, the SoundGuys target was rated pretty positively in the new tests from Harman (arguably higher than Harman 2019 IE if you opt to weight trained listeners more), as well as in the SenseLab testing. Both studies have methodological issues, but I'm not quite as confident saying the...

Oh, hello! I'm aware you guys use the bounds instead of a single curve anyway (was cool to see Dr. Olive use this as well) so I didn't put much stock into the "Headphones.com target" anyway. Now that I mention it, do any of you on the Headphones.com team use this target for personal use when...

I largely agree, yeah. The data you've posted, as well as the fact that the majority of difference between the curves tested lies in the 4-8kHz area that a lot of people don't like about Harman's IE target, makes me think the MOA testing might do well to incorporate an adjustment band in this...

Those conclusions certainly are interesting! Sean has now said in no uncertain terms that the 5128 is the more accurate hearing simulator, so I guess in that respect Apple, Sony, Samsung, SoundGuys, Headphones.com, RTINGS, Crinacle and whoever else has one for IEM measurements are right to be...

It seems Sean used Headphones.com's DF HRTF + Harman's 2015 filters applied (pic related). Resolve is saying they meant to have him test the 2018 filters on the same baseline instead, which would've had the ~3kHz adjustment we know serves as the difference between Harman 2015 and 2018 AE/OE...

These all look very similar except for differences in the ~6kHz region: this makes me wonder if future testing specifically around the variation in preference in this region is a potentially good idea. Right, it makes sense that it would get closer to a Diffuse Field the more measurements you...

Wow! Thanks so much for the reply Dr. Olive. I’ll keep my eyes out for the video. Oh wow, so you expanded the amount of HATS measurements from the old -30 degree/0 degree/30 degree arrangement from the prior studies! That’s super interesting. I’ll hold any questions until after the video is...

I can ask if they're sure, but I think they were because they were also pretty shocked at this. I actually agree that this would be way more interesting, as I mostly use over-ear headphones with EQ anyway.

Was anybody at the Sean Olive talk at CanJam & if so, do you have pictures of his slides? A friend who attended said Sean revealed he's not using "Harman In-Room Flat" anymore & is using the same 5128 DF baseline as Crinacle & Headphones.com, which was suspicious and unexpected. He said Sean...

I worry that this statement is implying something you don't mean, can you clarify? It almost reads like you're saying "because Harman's research—limited by the measurement instruments available at the time—was limited to a bandwidth up to 8-10kHz, that this is the only band of audio that matters...

Re: treble adjustment, there had to have been some adjustment since there is a difference between the 2016 and 2017 curves. Unfortunately we don’t know what exactly went into this, because the latter methodology wasn’t published. Frankly, it strikes me as a bit odd how little the absence of the...

I think this is an underrepresented viewpoint in many IEM reviews, unfortunately. Harman being the best publicly-available listener preference research we have doesn't mean we should ignore these very real sources of variability between listeners, these are simply questions that Harman's...

Thanks for posting this, I just read the papers that Sean cited in that slide and they both have pretty fascinating stuff in terms of how canals vary.

Definitely excited to see the full review. Hope the 490 pads are a bit slower to wear than the 600 pads.

Generally I would never err towards thinking a measurement is incorrect just because of a subjective impression is deviating from the measurement. They got confirmation from Gunnar himself about the measurement, after all. By all accounts, it seems the measurement is what it is: it’d be pretty...

I'm inclined to agree. I think it's also uncontroversial to say that it is irresponsible of Sennheiser to publish the measurement without disclosing this critical information in the first place. I just hope someone with a decent rig does eventually get them. I'm not certain any of the larger...

These are measurements before the ones taken by the video makers, during the discussion with Gunnar matching the ones posted by you earlier in the thread from the release briefing. That being said, because their pro division declined to disclose whether the measurement was Diffuse Field...

There are objective circumstances, and these have an effect on what the conclusions drawn may be, but I'm also not sure I'd say it's something that's easy to boil down to objectively good or bad. Especially when we know thanks to Harman what the divergence and segmentation of listener preference...

You found this difference on every IEM you tested, regardless of seating & other factors? That's absolutely atrocious quality control, if so. The 711 coupler absolutely seems like the more convenient and repeatable measurement device as of right now, and I'd be ecstatic to see something that...