I would like to offer an observation from the perspective of a "student" of the forum. Having received my EE degree in the early 80's, the academic focus had already turned to digital, so I feel like I have had to virtually restart my education when it comes to analog, and particularly audio. This forum has kept the intellectual fires burning and I thank you all for it. When I first signed up and began scanning for posters who I could draw from, it was the pearls of wisdom from poeple like John Curl that immediately drew my attention. However, it became clear over time that most of them were contributing as tenured observers, so I continued my search. As my knowledge improved, there were two people who I seemed to gravitate to: syn08 and PMA. I know there are plenty of other great contributors, but it is when these guys post a new design that I end up burning the midnight oil to capture what they have intended to communicate. Of course like others, I am annoyed by the bickering and childishness that contribute to thread bloat, but the gems that emerge tend to make up for it. I really could care less if the ideas are fundamentally new, they educate, and are appreciated.
as requested, OT posts deleted.....but you guys are posting it faster than I can delete it.
If you want to banter, there are many threads in "Everything Else" for exactly this purpose.
Ah, I am not in the academic world, so I have not published any formal papers, if that is what you mean.
Results can be evaluated in many ways. You mention some ways.
How they can be evaluated and validated and maybe falsified can be debated in absurdum. Not sure what you are after here really.
My ex was that six people did a blind listening test comparing different resistors in the shunt input position of a MC RIAA amp,
and we definitively heard sonic differences.
Instead of evaluating and validating and maybe falisifying my results, why do you not make such simple tests your self?
That will convince you much more than any other person's results, IMHO.
Sigurd
Results can be evaluated in many ways. You mention some ways.
How they can be evaluated and validated and maybe falsified can be debated in absurdum. Not sure what you are after here really.
My ex was that six people did a blind listening test comparing different resistors in the shunt input position of a MC RIAA amp,
and we definitively heard sonic differences.
Instead of evaluating and validating and maybe falisifying my results, why do you not make such simple tests your self?
That will convince you much more than any other person's results, IMHO.
Sigurd
SY said:
We in Europe who sleep when you guys are writing posts did not even have the opportunity to read the posts....but maybe that was for the best 😉
syn08 said:
Mr Popa,
btw, do you plan to update your Golden ear Phono Preamp thread with the HPS lyrics ?
Personally i don't give a Skit/Strunt/Smutzig about show me yours i've show you mine clashes, only in design sound and expenditure versus merits.
(Lineup is OK, if only he gospelled that the Traci Lord has giant boobs. Besides, Mr Wurcer's previous avatar should make it perfectly clear who's the winner by a long stretch.
)
A really low noise design for $10/ch in active parts (excluded the fancy opa445) should be worth a shot.
(even for those who have phono stages ranging from minimalistic NFB discrete, balanced hybrids, to young man you're too Curly curly stuff)
btw, do you plan to update your Golden ear Phono Preamp thread with the HPS lyrics ?
Personally i don't give a Skit/Strunt/Smutzig about show me yours i've show you mine clashes, only in design sound and expenditure versus merits.
(Lineup is OK, if only he gospelled that the Traci Lord has giant boobs. Besides, Mr Wurcer's previous avatar should make it perfectly clear who's the winner by a long stretch.
)A really low noise design for $10/ch in active parts (excluded the fancy opa445) should be worth a shot.
(even for those who have phono stages ranging from minimalistic NFB discrete, balanced hybrids, to young man you're too Curly curly stuff)
Hi,
They are, necessarily. (Proof can be obtained by thinking). The question is whether your equipment is able to reproduce them. Usually, the loudspeaker is the most limiting, decisive and likewise the most neglected element.
jacco vermeulen said:(Lineup is OK, if only he gospelled that the Traci Lord has giant boobs. Besides,
Mr Wurcer's previous avatar should make it perfectly clear who's the winner by a long stretch.
Discussing low noise or audio does not have 'a winner'
You should have known this, after all these years of reading topics
Unless you like to look at our hobby as a contest
Scott W. I consider my friend, as much you can be friends over internet
He is a man of my kind ... and I probably will not find many reaons to change my mind 'bout that
In my opinion, the above statement only have one loser
And it ain't me!
Because, on my behalf, I wont start any contest with a former Analog Devices technical design worker
And my main reason would still be:
Why Com-pete?
When we can Co-work and get a fair advice to try out improvements.
/lineup of sweden End of May 2009
-----
More at Bob Dylan personal & official website:
http://www.bobdylan.com/#/songs/times-they-are-changin
And don't speak too soon
For the wheel's still in spin
And there's no tellin' who
That it's namin'.
For the loser now
Will be later to win
For the times they are a-changin'.
jacco vermeulen said:
Probably I will after I'll finish the case, etc...
HPS 4.0 (bipolar input) is on the drawing table but I must finish/close other projects before. Anyway, it's more difficult than I was originally expecting.
What I'm after is details to evaluate what is an extraordinary claim, viz. that differences in resistors were detected in a blind listening test. "There were 6 people and one of them was my girlfriend," isn't exactly a detailed description of the test protocol.
The quote ""There were 6 people and one of them was my girlfriend,"" is not from my writing. That is from your own mind.
I actually had not met 4 of the other 5 people before.
I do not think that the most detailed report would be as interesting as making one's own blind tests.
It is so easy to do - just do it. But do not spare on the quality of the audio reproducing equipment.
Sigurd
I actually had not met 4 of the other 5 people before.
I do not think that the most detailed report would be as interesting as making one's own blind tests.
It is so easy to do - just do it. But do not spare on the quality of the audio reproducing equipment.
Sigurd
SY said:
Sigurd Ruschkow said:
Maybe I’m wrong, but didn’t JC answer your post Sigurd.
Are the moderators on alert today or did JC delete the post himself?
Cheers
john curl said:
What, John C.?
Is everything alright?
You are feeling well I hope.
syn08 has this fantastic ability to start some audio topics
that attracs all sorts of people and all sorts of feelings
... and still present some real good top class technically Audio Designs
was quite a while since I visited his audio constructions website .. but who needs
when he invade diyaudio.com with all that remarkable creativitiy in low noise audio circuitry:
www.synaesthesia.ca - > syn08 -> Advanced DIY Audio Projects
/yours, LUp
Yes it would. And without actual details of what you did, how could I possibly try to replicate it?
And no, actual blind tests are very difficult to do. If what you did was easy, then it was a parlor game, not a blind test. Nothing wrong with parlor games, they can be quite fun, but don't call it a blind test.
Sorry for a cross-thread answer.
First of all I do it because Wavebourn states that he will not post in the BT thread, secondly because this issue has been discussed in this thread.
Wavebourn
Thanks for your email; there are some issues in your email that I’m not going to comment.
I will comment about the obvious.
I follow your thoughts and your conclusion, but everything boils down to that the BJT is a current controlled device. This has been discussed in this thread some pages ago.
We have a slightly different view about that, it’s of course possible to look at the BJT as a current controlled device, but on the other hand it is also possible to make it voltage controlled, it depends on how you drive it.
I don’t know how Scott designed his opamp, but I guess the ef- ops are voltage controlled.
Maybe Scott has a comment?
First of all I do it because Wavebourn states that he will not post in the BT thread, secondly because this issue has been discussed in this thread.
Wavebourn
Thanks for your email; there are some issues in your email that I’m not going to comment.
I will comment about the obvious.
I follow your thoughts and your conclusion, but everything boils down to that the BJT is a current controlled device. This has been discussed in this thread some pages ago.
We have a slightly different view about that, it’s of course possible to look at the BJT as a current controlled device, but on the other hand it is also possible to make it voltage controlled, it depends on how you drive it.
I don’t know how Scott designed his opamp, but I guess the ef- ops are voltage controlled.
Maybe Scott has a comment?
- Status
- Not open for further replies.