The DIY'rs Cookbook
May 24, 2016 at 5:43 AM Post #451 of 1,974
I always liked the electrical guys joking about putting a coat hanger in in stead of a fancy cable....
Now you have modded the Wyrds have you considered bolting them together and hard wiring them? At least it saves a cable..

Just a question if you know, John Swensons new super capacitor PS, is it independent...
IE that drives the device/Dac/regen device or does it need a feeder supply
A separate LPS...

I know chord and Vini Rossi use them..

With global warming... clean power seems the way to go...8^) Explanation to wife sorted...
 
May 24, 2016 at 12:05 PM Post #452 of 1,974


JJ, I've been fiddling with the Speltz cables also. Liking the double run (10') in my speaker rig (once I got them bent into the needed turns & curves). Have also been running in a half meter pair of their interconnects in the head-fi rig. Same approach -- quality copper, minimal dielectric, Eichmann plugs (with the small single point ground).
 
May 24, 2016 at 6:30 PM Post #453 of 1,974
I always liked the electrical guys joking about putting a coat hanger in in stead of a fancy cable....
Now you have modded the Wyrds have you considered bolting them together and hard wiring them? At least it saves a cable..

Just a question if you know, John Swensons new super capacitor PS, is it independent...
IE that drives the device/Dac/regen device or does it need a feeder supply
A separate LPS...

I know chord and Vini Rossi use them..

With global warming... clean power seems the way to go...8^) Explanation to wife sorted...

I doubt I'd go to the trouble of 'joining' the 2 Wyrds together, mostly because I can't see where there would be much, if any, advantage to doing so.
Of course I could be entirely wrong, but I already have WAY to many projects lined up, just waiting…
atsmile.gif

 
When I first  looked into the super caps they struck me as a novel idea with some interesting applications etc.
But they still need to be charged back up which opens the very same door for noise that 'regular' caps/batteries have.
 
For certain uses like automotive and industrial applications I can see them as very much a step up, but in audio their benefits (other than bragging rights etc.) are curtailed a fair amount, not to mention their price being still quite high.
 
They are quite nifty in terms of the technology involved, but currently they seem to me to be a 'stopgap' solution searching for a problem to solve.
 
JJ
 
May 24, 2016 at 6:32 PM Post #454 of 1,974


JJ, I've been fiddling with the Speltz cables also. Liking the double run (10') in my speaker rig (once I got them bent into the needed turns & curves). Have also been running in a half meter pair of their interconnects in the head-fi rig. Same approach -- quality copper, minimal dielectric, Eichmann plugs (with the small single point ground).

I had a set of their balanced IC's and after I cryo'd and cooked them they were VERY nice.
I sold them because I found 'Better' IC's but they indeed did cost Way more.
 
JJ
 
May 26, 2016 at 4:32 AM Post #458 of 1,974
You need a higher post count in order to post pictures.
 
JJ
 
May 26, 2016 at 4:42 AM Post #459 of 1,974
What and how do we know what IS ‘Better’?
or
It’s all in our heads, or is it?

 
Part 19             Auditory Memory

Auditory Memory
The notion that we all have no real auditory memory, of any long term duration, strikes me as incorrect and presumptive.
I simply don’t agree with that opinion, at least not as most understand the terms used.
In my experience I have memorized a bunch of music, to the point that I will sing/talk along with the lyrics of the vocalist, with full intonation and inflection.
Frank Zappa is a favorite of mine for this, as is The Firesign Theater…
 
This is memorization pure and simple, and it applies to more than just lyrics.
I use this ‘tool’ to help determine if changes to the system alter the music as I have known it previously, to the point that when whole other ‘voices’ are heard, where before they were hidden or masked, I can determine if my recent changes are ‘Better’, or not.
This is only possible if I had a memory of how it used to sound.
Auditory memory does exist and from what I have come to know is not simply a function of auditory recognition, there is more to it than that.
 
It seems to involve our memory of the meaning and the intent of the words that are sung and of all of the different voices, (background vocals, duets, choruses etc.) some of which will ‘speak to us’.
It also seems to involve our emotional memory, as in how the music affects our mood, our degree of focus and attention to the interplay of the different ‘voices’ with, and off, of each other.
And it seems that our emotional memory can be quite strong and changeable to varying degrees.
 
We each have certain music that excites us, that we feel drawn to and derive a great deal of emotional attachment to.
We all listen for different reasons and aspects in the music, which in part also helps to determine what music we select to listen to.
We all are unique in that regard.
 
IOW we all are drawn to music for greatly different reasons, and derive greatly different types of enjoyment from what we are motivated to listen to.
But thru it all is the joy, pleasure, fun, the power that music provides for us.
 
So to, to insist that All of us don’t have acoustic memory, flies in the face of our vast diversity.
 
A case in point is a symphony that Gustavo Dudamel conducted, on a you-tub video, where a musician messed up and misplayed a portion of the work being performed.
Gustavo’s head immediately snapped around and focused upon that musician…
He knew, instantly, that the musician had messed up, because he had memorized just exactly what was supposed to have happened.
 
And while many indeed may not have much if any acoustic memory, especially under ‘controlled’ (contrived) conditions, this is in contrast to how we actually listen to music, which involves much more than simply our analytic abilities, and where our acoustic memory does come into play.
 
Such that this commonly held belief, in my view, does us all a great disservice.
So by trying to define our hearing ability by what it can’t do, (another logical fallacy) this belief has become a tenet, a fait acompli, a truism which is accepted as fact, when it simply isn’t so,
at least not for everyone!
 
And to be sure, as long as this belief is held as true for oneself, it will remain true for you and those who believe as you do.
A self fulfilling prophesy type of situation.
 
IOW what is stated as fact most definitely applies to all who believe it.
But those beliefs don’t necessarily apply to everyone, and no matter how much ‘social pressure’ (derision nor how many times we are told we are wrong), it simply won’t stick.
 
Why?
Because experience will ALWAYS trump opinion.
Every,
Time.
 
When I have experienced something that others have defined as ‘impossible’ or an illusion or wishful thinking, all of this ‘expert’ opinion matters not.
 
Why?
Because if the experience has been repeated, or better yet enhanced with multiple experiences, that is all that matters as far as ones own opinion on the topic.
It simply nullifies those who haven’t nor are they likely to ever hear what is ‘impossible’.
 
Why?
Because they believe it to be impossible, and thus, for them, it is impossible.
 
However some simply won’t take no for an answer.
As in, no, I don’t believe you, my experience trumps your opinion.
 
Lastly, Mike Moffet in one of his posts stated that…
“This taught me that the human ear is an integral, NOT differential device.”
from here, http://www.head-fi.org/t/701900/schiit-happened-the-story-of-the-worlds-most-improbable-start-up/7725#post_11921090
 
I won’t presume to explain what he precisely means by this, but I can tell you what I understand it to mean…
 
The difference between integral and differential is not just what ‘data’ we use for analysis, but how it is processed which helps form our impressions of what we hear.
And the duration of this processing is a key factor in all of this as well.
 
In a differential mode of analytic perception (where DBT mostly operates from) it is the difference between 2 sets of data, one being memory based and the other music that is being heard in realtime, as in, in only the ongoing NOW moment.
 
In an integral mode of perceiving music, it is the ongoing sum total of the auditory perception as it is experienced in realtime, and this cumulative perception, rather than a ‘short term’ or difference decision, is of key significance.
 
Why?
Because music is an ongoing experience that builds upon itself and accumulates and establishes multiple patterns, which are continually reinforced and refined.
It is a Dynamic experience that can only occur in our ongoing NOW moment.
 
Whereas in a differential mode there is very little accumulation of this experience except for the results of the analytic differentiation process itself.
It is a ‘snapshot’ of the impressions we derive from focusing our attention upon the ‘task at hand’ which is a separate and distinctly different process than listening to music.
IOW what is carried forward is not the experience of music, but a mentally produced derivative of our analytic processing.
 
While one is the result of our analytic processing of our perceptual abilities in a short time frame, the other is akin to how we listen to music.
 
This means one is a much more realistic reflection into how we actually listen to music which can reveal useful results that corresponds much more closely to listening, while the other is a contrived and isolated test of questionable usefulness.
At least as it might be applied to us as we actually do listen to music as the desired intent of our endeavors.
 
JJ :thumb

End Part 19              
 
Next up         Choke Points revisited
 
May 26, 2016 at 5:58 PM Post #460 of 1,974
Very thought provoking... Thanks, JJ.
 
Quote:
  Auditory Memory
The notion that we all have no real auditory memory, of any long term duration, strikes me as incorrect and presumptive.
I simply don’t agree with that opinion, at least not as most understand the terms used.


My intuitions, precisely.
 
I never quite understood how "short-term auditory memory" was actually supposed to work... Let's say I listen to a "do" by Luciano Pavarotti and then to a "do" by Britney Spears. In 5 min, will I not be able to tell one from the other? Or in 24h? Or in 1 year? Or will I have a hard time recognizing Pavarotti's "do" ever again?
 
The "no long-term auditory memory" is a very weak assumption, and either way you look at it any scientific research is only as strong as its weakest assumption. Most people will generally be capable of detecting subtle variations in a friend's voice, indicative say of distress or of joyful palpitation. This can ONLY be possible if people have long-term memory of what the friend's voice "normally" sounds like...
 
In an integral mode of perceiving music, it is the ongoing sum total of the auditory perception as it is experienced in realtime, and this cumulative perception, rather than a ‘short term’ or difference decision, is of key significance.

 
I can attest of this effect from personal experience, from when I was completely oblivious of the existence of high-end audio, "objectivists" or "subjectivists", and was listening blissfully to 128 kbps MP3's on run of the mill laptop, and had absolutely no dog in this fight.
 
A long time ago I realized that when listening to a new album, generally on the first time I had no opinion of it. Sometimes even the second time wasn't sufficient, and only on the third time I was ready to pronounce myself whether it was something I enjoyed, appreciated or absolutely hated. This can only be explained if my brain needs several "passes" to analyse all relevant aspects the incoming stream of auditory information, in an "integrative" fashion, and it is the cumulative aspect of the all the analyses and patterns spotted that generates this "perception", positive or negative.
 
If the "long-term listening" factor is indeed integral to the humans' auditory perceptions and the pattern recognition performed by the brain, then this missing factor traditionally not controlled for could potentially invalidate decades of instantaneous DBT performed in scientific as well as sciencey circles...
 
May 26, 2016 at 6:33 PM Post #461 of 1,974
I've posted this here in the past, but this is all the more relevant to the short-term vs long-term auditory memory discussion, and the integrative vs differential aspects of the human hearing. Here's another voice from the industry, this time on the mastering side, Robert Ludwig:
http://tapeop.com/interviews/105/bob-ludwig/

"[Q:] You once said that today's converters, with great clocking, cannot be differentiated from the analog source by anyone you've tested.
[A:] I'm not saying that no one can ever hear the difference, I'm merely saying when someone comes into the studio for a quick visit and I play the source vs. high resolution digital, a 96 kHz, 192 kHz, or DSD copy, no one can immediately pick out the difference. Don't forget, these are all awesome converters. The quality of the engineering of the analog-to-digital converter and DAC is much, much more important to the musicality of the sound than the sampling rate could ever be. Our $8,000 converters at 16-bit/44.1 kHz sound way, way better than a 192 kHz playback from a $5 chip on a DVD-Audio player. I think the higher resolution sounds reveal themselves not in A/B testing, but in long periods of time. Play an entire album in a relaxed atmosphere at 96 kHz/24-bit, then, at the end, listen to it at 44.1 kHz/16-bit, and you'll get it right away. A/B testing, while the only scientific method we have, does not reveal too much with short-term back-and-forth comparisons due to the anxiety the brain is under doing such a test. The brain becomes very left-brain-technical, rather than right-brain creative and musical."
 
May 26, 2016 at 7:56 PM Post #462 of 1,974
I've posted around on this subject also.
 
Quickie A-B comparisons are terrific to disclose frequency response aberrations; bass-treble, bright-dull, etc. Way over-used in Head-Fi land, however. Leads to real short sighted conclusions like "...this $200 converter performs as well as that $2000 one...". (It probably does in f/r; both are flat, f/r wise)
 
But spend a couple evenings with them and the musical experience is  hugely different. Timbre & texture, air & space, attack & damping, real wood blocks & drum skins. 
 
When I can't stop listening to whole albums, the good stuff is working.
 
IMO
YMMV
 
May 27, 2016 at 5:23 AM Post #463 of 1,974
Decades back when the Bose 901's first appeared on the hifi scene, they were the darling of the latest and greatest of the then available stand alone speakers (AR-3a's, Klipschorn's, Cornwall's and a scant few others).
 
But then they started to get traded in all to quickly, as in after just a few months of use.
The reason?
They sounded too good…
blink.gif

 
Actually I think what was going on was they were very impressive and sounded really good at the the hifi shop, but living with them was a different proposition altogether.
IOW they didn't sound too good, they sounded to good to be true and they were, especially if you understood their design criteria.
 
IOW it's only after you live with and become much more fully aware and familiar with the entire system as it performs with the specific gear on hand, that truly matters.
 
Short term tests which can reveal some 'obvious' aspects in the sonic presentation, can also trick us into coming to erroneous conclusions about the overall SQ, which will reveal itself as we gain further experience and hear a greater range along with different types of music.
 

It has been an observation of mine, for many decades now, that until there is a (or series of) tests that can mimic music AND provide a high degree of correlation with what our perceptions are, to the numbers these tests generate, we (as in us audiophools) will continue to rely upon the most sophisticated auditory tools available to us, namely our hearing.
 
For those that need measurements to validate their sense of what they are able to hear, then by all means do so, but please try not to insist that we need to adopt your opinions as our own, upon those of us who have moved beyond that series of limitations.
It will tend to lessen the animosity between both 'sides' of the divide that need not separate us in the first place.
I know from 1st hand experience that I tend to dismiss anyone who tries to tell me what my experiences are, despite the fact that they themselves simply haven't experienced what I have.
And I assume most would react in a similar way…
Even those who's opinion are held as being sacrosanct.
 
JJ
 
May 27, 2016 at 5:43 AM Post #464 of 1,974
I'm currently passing thru the SuperGlue stage of auditory presentation.
It will be another 2 days ± till I reach the peak.
That is if this pattern holds up, which thus far it has followed, quite closely, several previous similar patterns.
 
This is gunna be a real treat…
And my greatest temptation is to just…
 
LEAVE THE SYSTEM ALONE and NOT SCREW WITH IT.
 
Except the hook is set so deep that I have a whole list of projects, just waiting to be tested…
 
Sigh, 
I really need to just listen and enjoy the net effect that all of my cumulative tweaks are delivering to me…
atsmile.gif

 
Like I noted above,
"This is gunna be a real treat…"
 
JJ
 
May 27, 2016 at 3:03 PM Post #465 of 1,974
  For those that need measurements to validate their sense of what they are able to hear, then by all means do so, but please try not to insist that we need to adopt your opinions as our own, upon those of us who have moved beyond that series of limitations.


Curiously Mike Moffat has made much the same argument in the past:
http://www.head-fi.org/t/784471/what-a-long-strange-trip-its-been-robert-hunter/480#post_12407199
  Now, that is alright and everyone has the right of self-expression; we can cordially agree to disagree. My rub is with the prevalent and sanctimonious attitudes that since all amps/DACs must be of equivalent worth because they sound the same, it is not just WRONG but foolish for anyone to express any sonic preference for any gear, period.


 
That whole post is very much related to your previous chapter...
 

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