The problem is this product makes not just product claims, but underlying scientific claims. If a prophylactic  cure for cancer came out, I'm not going to watch a two hour video about it to see if I might be convinced to take the pills.  I'm going to wait for a proper article reviewed by...

  Personally, I'll finish reading the article, probably soon.  I won't buy them, but I really use only very cheap iems, just for convenience, and not much for music even at that.  I have thought of getting some good ones for air travel sometime though.

 Well I may have mis-interpreted some sentence, but I think we exactly agree on that.

But now I've read a little more of it again.  Yep, definitely a proceedings article.  The way they just drop in the "preliminary" data on page 8 with no description of how it was taken, and then the article just ends.    No indication of the number of data points, blindness etc. The "conclusion"...

Hi Brooko.   I have seen it.  I haven't read all of it yet.  Page 7 does seem to imply that in the end, what they have is an iem with a reduced bass response.  Some hole somewhere might be a way to get that.  Do no other iems have weak bass though?  I still think they're spinning words here a...

Castle I agree.  There is a gap though between useful "this is a great headphone with a sound signature and clarity for enjoyable listening at low volume" and a sales pitch about wiz-bang ear saving tech to hype the price a little more.  Where in the spectrum this falls is not clear.

WCD, I think you are interpretting "pnematic" to mean "constant", "static" or at least very slowly changing?  I don't think it's even clear that everyone means this.  Some just seem to think that the "direct" pushing of the speaker on the ear drum by way of the air in the enclosed space, at a...

  from http://american-hearing.org/disorders/noise-induced-hearing-loss/   "An example of a noise induced hearing loss is shown in Figure 1. There is a “notch” at 3000 Hz, with better hearing at both lower and higher frequencies. When noise is too loud, it begins to kill cells in the inner...

  Come on G.  Of course it correlates.  I know you didn't really mean that. You mean it's not a direct correlation.  Sure frequency and hearing damage alter it.  For a given ear, at a particular frequency, I'd say it's a direct correlation.  There is another thing that I argued about earlier...

Brooko. You seem way more emotional about it all than you claim me to be. Nobody called you and idiot. I haven't moved the bar as you say and I haven't even made nearly as many posts as you seem to imply (two, in sequence actually before you started attacking me, no more other than a couple many...

  I don't think you get how conference proceedings work. Yes, they're published by big name organizations.  No they're almost never held to  nearly as high a standard as regular submissions.   There could be exceptions in some conference in some field, but it would be an exception.  And the NSF...

And I'd still like to see the papers that are not conference proceedings. I can't see why this work would only be published in conference proceedings.

  I can certainly respect this reply. The point about not noticing sub-bass sounds like much more grounded way of looking at things to me, than trying to make funny linguistic distinctions about "pneumatic" or "sound" pressure. Sure, huge volume 10 hz could do something bad. Do you need some...

  In other words... the iem can maybe more efficiently transfer pressure to the ear drums at low frequency than some other speaker.  That pressure is called VOLUME. So what?  We're saying iem's are efficient? (duh) bass heavy?(depends on the iem I guess)  We're saying they're  too loud?  You...

From the Montreal conference proceedings:  "From the 1960s to the present, Stephen D. Ambrose has been investigating..." "... the fact that he was both an engineer and a vocal performer gave him a unique grasp of the full range of drawbacks..."   It's a little unusual to build ethos and refer...

I'm amazed at how many posts there are just buying into this idea that air can have two kinds of pressure, "sound" pressure and "pneumatic" pressure.  What nonsense is this?  And pressure "building up"?  From an alternating signal?  Air pressure is air pressure.  Period.  You can I suppose have...

Wait where do I find that smiley where the head guy beats a dead horse?  Oh, here it is:        Wait wait, if you didn't notice, that was a three-way pun     Where's that knee slap smiley?

I don't get the external clock thing.  If you've got a two way communication protocol with flow control there is no reason you can't buffer two streams locally on the DAC and grab one and exactly one sample from each stream for each analog output cycle, all controlled by the internal clock.  I...

I don't get this jitter stuff.  I can't see how or why DACs could or would rely on the input digital signal for the output clock. If the signal was on a 16 wire wide lane, I could see it, but it's serial. Obviously I just don't get how it works though.

I don't think there's any question that some resampling processes can be audible.  And I've recently heard one in particular that is.

.. oh and subjective tests can of course never prove that a perceptual difference doesn't exist.  They can only say exactly what they say... that if it does exist, it's not identifiable, in the test material chosen, by the people tested, with more than x% accuracy. But I guess this is...

That may be true. I think it should not be audible, but that doesn't mean is isn't.   Still there are some interesting points here.   The fact is that higher sampling rate DOES add precision of information. It effectively adds bit depth (I'm not saying that helps or that we don't have enough...

Now I didn't say that there definitely isn't berfect retention of 80kBytes/second of information between 0 to 20khz in 2byte depth of 40khz sampling. In fact, averaged over all frequencies and time, **IF** the original signal was band pass filtered, then clearly 100% of the bits contain...

Nope Nyquist doesn't mention bit depth because Nyquist is a mathematical theorem that deals with exact mathematical functions, not inexact (bit limited) oberservations.  It says NOTHING about the precision of information obtained from a certain precision of measurement.    You can have a...

Of course part of the catch to this is proper rendering of said perfect information, but part is that said perfect information a la Nyquist requires infinite bit depth.  nothing about Nyquist guarantees that 40 khz sampling at 16 bit guarantees 16 bit depth precision of 19 khz sounds.  In fact...