Yup this is just a winter place for now, and my daughter wants to work in the bay area. I hope to make all the BA's
Bcarso, last year at the same event that Scott attended this year, I caught Bob Pease badmouthing my colleague Ron Quan behind his back. Ron Quan was there, but Bob did not bother to address him with his questions. I took Bob Pease on directly, and told him that if he wanted to take anyone on, he should try me, because I am the guy who got Ron Quan started on his measurement quest, as he had first worked for me, when he was a student at UCB back in the 1970's. We have remained colleagues since that time. He also worked with other audio manufacturers, including Ampex, Sony, and Symmetry, and he has worked most of his career in video design, which gives him an interesting perspective on audio problems.
Well, Bob Pease backed down, and did not want a direct (intellectual) confrontation with me, and probably nobody else, either. He just wanted to be a bully behind the scenes. RIP Bob, I still read your articles (with a grain of salt). I like to give him credit where it is due.
Well, Bob Pease backed down, and did not want a direct (intellectual) confrontation with me, and probably nobody else, either. He just wanted to be a bully behind the scenes. RIP Bob, I still read your articles (with a grain of salt). I like to give him credit where it is due.
Last edited:
Your latest (for those viewing this less than contemporaneously, circa 02-28-2012) avatar, finally someone I recognize I think, Helena Petrovna Blavatsky. Talk about another controversial historical figure!
John, I liked reading about his hiking adventures and particularly the ones in --- was it -- Tibet? I think he seemed the most human then. I bore him no particular ill will, but there was a lot of disappointment.
I was advised by one guy at NS I happened to get when I had a product question not to call RP on Friday afternoons, as that was the day he drank beer at lunch, and the effect on him was somewhat unpredictable --- but usually led to his becoming even more agitated and voluble than "normal". And normal was already pretty loquacious
Brad
Your latest (for those viewing this less than contemporaneously, circa 02-28-2012) avatar, finally someone I recognize I think, Helena Petrovna Blavatsky. Talk about another controversial historical figure!
I guess it is in the name of Speed of Light thread and Akashic Field.
Hi,
If you prefer to hear the story from one who has looked at both sides, as opposed to from one of the hatchet men of 20th century intellectual and scientific Inquisition, you may wish to read Robert Milton's Book "Forbidden Science":
Ciao T
If you prefer to hear the story from one who has looked at both sides, as opposed to from one of the hatchet men of 20th century intellectual and scientific Inquisition, you may wish to read Robert Milton's Book "Forbidden Science":
Ciao T
I emailed NanoSpire in response to their press release seeking investors. They sent me email responses that just blew my mind. I've posted extensive due diligence on this page of my blog entitled, Cold Fusion, Comedy?
Your latest (for those viewing this less than contemporaneously, circa 02-28-2012) avatar, finally someone I recognize I think, Helena Petrovna Blavatsky. Talk about another controversial historical figure!
Yes, Madame B. and her little white dog.
http://thebark.com/content/namesake-white-dog-café
Last edited:
I like it! A lot of Philadelphia in my life lately, quite oddly so in fact, as I have few recent associations there. "...or just show up and dance with your dog for free..."
Brad
It is a shame that new ideas get ridiculed before they even come to light.
It is, of course, the same with audio.
We have known for more than 70 years that THD is a lousy way to measure for audio quality, unless you weight each and every harmonic before coming up with a single number. In fact, for a decade or two, we used SMPTE IM as our reference standard for amps and preamps, and a wave analyzer for analog tape recorders and loudspeakers, and avoided THD.
The return to THD was due primarily to Sound Technology, who made a cost effective, quality, auto-nulling, and very low distortion (for the time) instrument in the early 70's.
Then AP came in, about 1 decade later, and computerized the measurements. They also made even lower distortion measurements possible, BUT it was still THD without any subjective weighting of the harmonics. While it is nice, and sometimes convenient to measure THD, it is not an accurate measurement, AS A NUMBER, ALONE, and an FFT must follow the THD measurement to give a graphical rendition of the distortion to give it any real meaning. But STILL, this is not enough, because no weighting is placed on the harmonics to estimate their sensitivity by the human ear to being either detected or annoying.
I suspect that if you measured many amps, even with an AP, and added a proper weighting factor, you would be very surprised what you would find.
This would give THD more significance than it has today.
It is, of course, the same with audio.
We have known for more than 70 years that THD is a lousy way to measure for audio quality, unless you weight each and every harmonic before coming up with a single number. In fact, for a decade or two, we used SMPTE IM as our reference standard for amps and preamps, and a wave analyzer for analog tape recorders and loudspeakers, and avoided THD.
The return to THD was due primarily to Sound Technology, who made a cost effective, quality, auto-nulling, and very low distortion (for the time) instrument in the early 70's.
Then AP came in, about 1 decade later, and computerized the measurements. They also made even lower distortion measurements possible, BUT it was still THD without any subjective weighting of the harmonics. While it is nice, and sometimes convenient to measure THD, it is not an accurate measurement, AS A NUMBER, ALONE, and an FFT must follow the THD measurement to give a graphical rendition of the distortion to give it any real meaning. But STILL, this is not enough, because no weighting is placed on the harmonics to estimate their sensitivity by the human ear to being either detected or annoying.
I suspect that if you measured many amps, even with an AP, and added a proper weighting factor, you would be very surprised what you would find.
This would give THD more significance than it has today.
yeah right
Did anyone say whether this was before or after the experiments were run??
When I was at FWPCA b4 Ruckelshaus (now the EPA) we detected over 82 different elements in Philadelphia sewage treatment sludge!! They wanted to dump it in the Atlantic off the Delaware coast because they had so much of it. maybe that's where the water came from... HA!
Did anyone say whether this was before or after the experiments were run??
When I was at FWPCA b4 Ruckelshaus (now the EPA) we detected over 82 different elements in Philadelphia sewage treatment sludge!! They wanted to dump it in the Atlantic off the Delaware coast because they had so much of it. maybe that's where the water came from... HA!
Last edited:
I don't see why I would need such a tool. Except probably for QA to ensure quality of production, but even in such case I would prefer some specific tests valid for potential flaws of particular production.
Like, when I lost keys on parking lot I would go and search where I could drop them, instead of going to some specialized spot with bright lamp and a neon sign, "Search here"
Like, when I lost keys on parking lot I would go and search where I could drop them, instead of going to some specialized spot with bright lamp and a neon sign, "Search here"
SY at least is consistent on this story
http://www.diyaudio.com/forums/lounge/173024-strange-case-solar-flares-radioactive-elements-4.html#post2730208
George
Scott, you are digging deeper and deeper (Mme)
Last edited:
It's a shame that no one ever demonstrates actual audibility before proffering all these "new ideas." Because until you can, all you've got are solutions in search of problems. Of course they make for great marketing hype so even if not one photon of meaningful enlightenment is brought into the world, at least someone can make a buck from it.
se
SY at least is consistent on this story
http://www.diyaudio.com/forums/lounge/173024-strange-case-solar-flares-radioactive-elements-4.html#post2730208
George
Scott, you are digging deeper and deeper (Mme)
That's a fascinating thread! Thanks!
Brad
Steve,
Funny enough, they did, all the way from Olson to Geddes.
That is the sticking point and that where it becomes a religion, not science, when in the face of very solid contrary evidence the Witchhunters continue to proffer "But we have this THD test here" or "We have this ABX Ducking stool here, if you drown you are not a witch but dead, if you float you are a witch and we burn you to death"...
That is the sticking point.
Evidence ignored, brushed aside, ridiculed and avoided in any way possible and those presenting it demonised, all in order to avoid having to admit that some things do go bump in the night and that the theories everyone has been building their careers and reputations are after not all they cracked up to be.
This BTW does NOT only affect Audio, far from it.
"Am I the witness or am I the crime
A victim of history or just a sign of the times
Across my heart questions and shadows still fly" #
Ciao T
# From Johnny Clegg & Savuka "Women be my Country"
http://www.youtube.com/watch?v=sT4A0wbImFQ
Funny enough, they did, all the way from Olson to Geddes.
That is the sticking point and that where it becomes a religion, not science, when in the face of very solid contrary evidence the Witchhunters continue to proffer "But we have this THD test here" or "We have this ABX Ducking stool here, if you drown you are not a witch but dead, if you float you are a witch and we burn you to death"...
That is the sticking point.
Evidence ignored, brushed aside, ridiculed and avoided in any way possible and those presenting it demonised, all in order to avoid having to admit that some things do go bump in the night and that the theories everyone has been building their careers and reputations are after not all they cracked up to be.
This BTW does NOT only affect Audio, far from it.
"Am I the witness or am I the crime
A victim of history or just a sign of the times
Across my heart questions and shadows still fly" #
Ciao T
# From Johnny Clegg & Savuka "Women be my Country"
http://www.youtube.com/watch?v=sT4A0wbImFQ
- Status
- Not open for further replies.