No, tax paid for science is amazingly open source these days. If I call one of these guys they are so proud they will share every detail. To be fair the EE content of some of these big physics experiments is fairly small and physicists in general don't always make very good EE's.
Yep one of Mostek's trade secrets turned out to be clever ordering of the 256 most critical "flashes" on the photomask-making magtape. In the old days before redundancy, every single one of the 128 voltage comparator circuits on the chip had to work perfectly, with zero offset voltage and full A-to-D action inside the fixed timing window. The way to get that every time was to make sure the two vitally important polysilicon gate rectangles, were EXACTLY the desired size (and were EXACTLY identical to each other). Mostek found that finagling with the setting of the "blades" on the Perkin Elmer mask making machine, not just what you do but when you do it, gave significantly better control of rectangle size on the mask. Better masks print better polysilicon gate rectangles on the chip, which gave tighter control of offset voltage and amplification speed, which gave higher yield and faster speed grades. Which equals much greater profit.
The best part is: you can't see this when you look at a finished chip under the microscope. You just see a bunch of rectangles printed in polysilicon. You have no way of knowing in what order they were laid down on the photomasks. If you happen to observe that those rectangles are well controlled, unusually well controlled, you are left to guess how the hell that could be.
The best part is: you can't see this when you look at a finished chip under the microscope. You just see a bunch of rectangles printed in polysilicon. You have no way of knowing in what order they were laid down on the photomasks. If you happen to observe that those rectangles are well controlled, unusually well controlled, you are left to guess how the hell that could be.
Did you ever hear the story about the one machinist in the world that could make the lead screws for steppers (this is the old days)? It always sounded like possible folklore to me.
We did acquire Resistor Products in Rochester to get their crusty old chemist that had the secret sauce for making thin film deposition targets. Our thin film was amazing for 70's technology, Roger said 17ppm/degree and 17ppm/degree it was.
I agree completely!! I also think listening over many weeks to lots of different music in a relaxed manner helps to tease out issues which are not point issues, more holistic impressions
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No you have the wrong definition of false negative - it is not hearing something which is actually different (by measurement or by other blind tests which have established this)
Again, no, the explanation is that Foobar ABX is an insensitive test - other properly conducted blind tests conducted by people experienced in perceptual testing tend not to have the issues that home run ABX testing does. So your point 4 is incorrect - the explanation is that that particular ABX test is not a yardstick by which to judge audibility or not of small differences
First day at BT I had to sign the official secrets act, never understood quite why, no one knew how System X exchanges worked.
In reality it was more to do with private wires etc.
And quite often not at all - to our, who did AXE, great amusement
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That sums it up, if folks think that means "I don't care" that's their problem.
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More nonsense. Designing mic electronics and recording with them is not the same thing. And studios have been using condensers with tube pre amps ( with all the extra complexity ) for ever. Some are still highly praised.
https://www.sweetwater.com/store/de...u47-large-diaphragm-tube-condenser-microphone
And the 50 year old ones are worth more money.
Stop pretending you know recording.
I was talking about recording and mics. Things have changed in the last 70 years.
And Keith Moon on drums
.....https://www.youtube.com/watch?v=p8yaW6BluwY&start_radio=1&list=RDp8yaW6BluwY&t=161
Probably not, but it was made with tube electronics. Was it recorded by Rudy Van Gelder?
https://en.wikipedia.org/wiki/Van_Gelder_Studio#List_of_recording_sessions
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The Linkwitz Pluto active speakers that I built and use have an all-pass filter on the tweeter to introduce a slight time delay. The woofers fire straight up, and the tweeter is above the woofer but facing forward. If the acoustic center of the tweeter was above the center of the woofer, then sound waves from the tweeter (which has near 180 degree dispersion at low frequencies) would reflect off the woofer diaphragm and be modulated by the woofer motion, so SL moved the tweeter forward a few inches so it is even with the edge og the woofer surround, then put the all-pass filter on the tweeter to align it with the woofer!
What distorion?
Sorry, '57, The Sound Of Sonny, Orrin Keepnews.
By then there were some great quality recordings, Ella Sings The Duke Ellington Song Book springs to mind
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