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Posts by JMS

Great examples of attempts in this direction so far in this thread. Another example is the AKG N90Q, which tries to do this in an all-in-one package, with the measurement system built right into the headphone.
 Ah yes, I should have said that the issue is not the use of an artificial head, which we do want a general mesurement to use. It's measuring between headphone and ear versus at the eardrum. If published frequency responses were measured outside the pinna, as in this paper, but using an artificial head, then it would be a reference for comparison against our own binaural head measurements. We could then equalize a headphone in-situ against the reference, giving us...
 3) Not that I know, but I note that much of the recent published work (e.g. from Inner Fidelity and Harman) use simulated ear measurements. I wish there was more work being done in binaural mic measurements, which would facilitate users like us doing our own personalized correction curves. 4) This was the paper "Nearfield Crosstalk Increases Listener Preferences for Headphone-Reproduced Stereophonic Imagery". One explanation is that "the use of those spatial enhancement...
An intruiguing paper was published in May 2015 that apparently discusses the science behind AKG's latest $1500 flagship and possibly the latest JBL Everest headphones. I'm surprised that there's been absolutely no press for the paper and not much more for the headphone (get on this Tyll!).   Here are the key points:   - For some headphones, it is possible to accurately measure its perceived frequency response using a microphone array between the headphone transducers...
Which of Core Tech's tech will AKG be using? If it's the analyzers, does that mean it will interface with Windows?
It's good that PSB designs their products using scientific principles. I have heard many of PSB's headphones and speakers and their great neutral sound reflects that.   However, I must call out the fact that, in yet another interview, Mr. Barton speaks at length about all the published research that he has made use of, but carefully avoids giving even the slightest hint as to any of their own research directions and results.   Sure, PSB is a profit seeking company and...
They did mention the "TruNote" technology will appear in other headphones to come later this year.   I would guess the microphones can measure the person's specific ear canal resonance to compensate at high frequencies, and size and leakage of the enclosure formed between headphones and face to compensate at low frequencies.
At CES 2015 Harman announced their new AKG90Q, with an intriguing, perhaps revolutionary, feature:  Given the recent research Harman has been doing in headphone target frequency response curves, my guess is that the system will actively apply DSP to equalize the target response (to one of the target curves discussed in the papers) after canceling effects from external noise. Thereby both equalization and noise cancellation are handled in one process. I suspect the "two...
As an owner of the AV40's, I have to say: Get the JBL's, no matter if the AV40's were 80% off and you've already stolen your grandma's money. The Amazon page for the JBL's shows an excellent set of measurements. The AV40's don't sound as good as that.
What I learned from this experience is that both measurements and listening are required for a proper equalization. The measurements were telling me where the issues are and what to try to correct, but the listening told me how much correction to apply. I wouldn't have arrived at the same settings by listening alone, nor by measuring alone.
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