Wow! To know that all these decades we have had to cope with more dull sound the more instrument tracks were recorded! Good that you and your wife clearly heard it! That's clenches it, thanks for the education
Jan
In no particular order I have found the following.
Perception, lines per inch...couldn't find the citation.
However, in the authors same body of work he discusses
"Human eyes are exquisitely sensitive to color variations:
a trained colorist can distinguish amount 1,000,000 colors, ...."
Tufte, E. (1990). Envisioning Information. Chapter 5, Color and Information.
Graphics Press. Cheshire, Connecticut. USA
Attended the seminar. What was very interesting is that Tufte passed around the
second book ever published from the Gutenberg Press. With that he commented
that even way back then, the second book contained a pop up that remained affixed
to the page and after some 530 years the quality of that was such that the pop up
still to this day didn't create wrinkles on the page. When the book came round
to me for inspection...I took it and left the seminar, got arrested at the vintage
book sellers convention across town. They confused me with the suspect who
just walked away with a portfolio of sacred and holy illuminations from the Vatican.
The first book off the Gutenberg Press was the Bible. The second book published
was also a very important work...anyone know or care to guess what it was?
Yes, it was a book with pop ups in it too, like the children's books. It has
as many applications today, probably more so, than when it was originally
published by print and published by hand written text.
Thoughts on learning or desiring knowledge.
Are best summed up by the words of Dr. Edwards Deming
"It is unknown and unknowable."
"No one can possibly know."
And, he gave an example of someone going to a seminar about
growing Egyptian cotton and coming up with an entirely new
process for doing something...I forgot specifically what it was.
Deming's point was that nobody knows what a person will take away
from learning something...regardless if it's directly job or work related,
or whether the person will put that knowledge to work immediately or not,
it shouldn't make any difference.
My own observations are similar and I've had more than my share of
people questioning me as to why I want to know or learn something.
This is especially so in education where it is perceived that subjects
are clear and distinct.
For example I was fortunate enough to take some educational units
at the Federal Reserve Bank. When school resumed the following
year, I was able to incorporate real world examples of finance and
economics to my math students and they learned from it.
Sadly, most of my colleagues got stuck with the same old educational
mumbo jumbo. Imagine 20 - 40 years the same educational credits,
teaching how fractions work to 6th graders. You do it once or twice
and know how to do it. And know that if kids can't multiply kids
can't go on. Then it's just a matter of knowing how to think out
of the box and motivating kids for "Drill and Practice".
Thanks for the bandwidth.
Perception, lines per inch...couldn't find the citation.
However, in the authors same body of work he discusses
"Human eyes are exquisitely sensitive to color variations:
a trained colorist can distinguish amount 1,000,000 colors, ...."
Tufte, E. (1990). Envisioning Information. Chapter 5, Color and Information.
Graphics Press. Cheshire, Connecticut. USA
Attended the seminar. What was very interesting is that Tufte passed around the
second book ever published from the Gutenberg Press. With that he commented
that even way back then, the second book contained a pop up that remained affixed
to the page and after some 530 years the quality of that was such that the pop up
still to this day didn't create wrinkles on the page. When the book came round
to me for inspection...I took it and left the seminar, got arrested at the vintage
book sellers convention across town. They confused me with the suspect who
just walked away with a portfolio of sacred and holy illuminations from the Vatican.
The first book off the Gutenberg Press was the Bible. The second book published
was also a very important work...anyone know or care to guess what it was?
Yes, it was a book with pop ups in it too, like the children's books. It has
as many applications today, probably more so, than when it was originally
published by print and published by hand written text.
Thoughts on learning or desiring knowledge.
Are best summed up by the words of Dr. Edwards Deming
"It is unknown and unknowable."
"No one can possibly know."
And, he gave an example of someone going to a seminar about
growing Egyptian cotton and coming up with an entirely new
process for doing something...I forgot specifically what it was.
Deming's point was that nobody knows what a person will take away
from learning something...regardless if it's directly job or work related,
or whether the person will put that knowledge to work immediately or not,
it shouldn't make any difference.
My own observations are similar and I've had more than my share of
people questioning me as to why I want to know or learn something.
This is especially so in education where it is perceived that subjects
are clear and distinct.
For example I was fortunate enough to take some educational units
at the Federal Reserve Bank. When school resumed the following
year, I was able to incorporate real world examples of finance and
economics to my math students and they learned from it.
Sadly, most of my colleagues got stuck with the same old educational
mumbo jumbo. Imagine 20 - 40 years the same educational credits,
teaching how fractions work to 6th graders. You do it once or twice
and know how to do it. And know that if kids can't multiply kids
can't go on. Then it's just a matter of knowing how to think out
of the box and motivating kids for "Drill and Practice".
Thanks for the bandwidth.
Why are there more than one microphone? Why are there more than one EQ?
Which is the best one and/or when to use that one versus another?
Behringer B2031 limiter circuit.
The limit signal is derived from output stages peak values.
Dan.
roughly we resolve lines at 0.3 arc minutes from some stuff on viewing pictures I have read, then there is this:
http://www.swift.ac.uk/about/files/vision.pdf
This is interesting also:
http://www.cambridgeincolour.com/tutorials/cameras-vs-human-eye.htm
I don't think you need figures that high, 4K on a 24 inch monitor is 180 pixels per inch and that looks quite good, I would think a 1000 pixels per inch would be more than enough. Using 11,000 pixels per inch on a 24" wide screen monitor gives us a 31680M pixel display..... rather more than we can resolve I believe.
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And this
Clarkvision Photography - Resolution of the Human Eye
As to lines per inch there are many factors such as viewing distance, looking at the circle of confusion may provide more answers, found this:
From...
Circle of confusion - Wikipedia, the free encyclopedia
Plenty of stuff out there regarding the circle of confusion and ability to resolve detail, I have been playing about with this for doing large prints at high DPIs of photos and playing with big stitched panoramas 20,000x4000 pixels 5:1, print/screen size and viewing distance is important. I have also read that some of the smart devices retina screens are approaching human visual acuity at 400 dpi...
Clarkvision Photography - Resolution of the Human Eye
As to lines per inch there are many factors such as viewing distance, looking at the circle of confusion may provide more answers, found this:
From...
Circle of confusion - Wikipedia, the free encyclopedia
Plenty of stuff out there regarding the circle of confusion and ability to resolve detail, I have been playing about with this for doing large prints at high DPIs of photos and playing with big stitched panoramas 20,000x4000 pixels 5:1, print/screen size and viewing distance is important. I have also read that some of the smart devices retina screens are approaching human visual acuity at 400 dpi...
Using a good photo printer at 300 DPI (output from the software) the standard for photos give excellent results and is generally the standard for photo prints, though I do believe the resolution from the printers is actually better as the dots are sort of (dare I say it) dithered.....Mine can do DPI in the thousands, but my basic photos are only 7360 x 4912 pixels, I can print out at 300dpi A2 and still get the same look as a 4"X6" snap...
How Image Resolution Affects Print Quality - Photoshop Tutorial
How Image Resolution Affects Print Quality - Photoshop Tutorial
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I'm not the only one to had noticed-it. I knew sound engineers who used to chain several bus to minimize this phenomena.
Neither i know a lot of commercial mixing desks witch used CFAs here.
Not to forget that large mixing bus is a very sensitive place for RFI etc. and that, with CFAs, we can use lower impedance for the feedback paths.
So i don't understand your irony, if it is so.
Do-you have, you too, this strange allergy to CFA topology ?
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Not at all, I'm pretty agnostic here, have used both. I do not share your religious hang-up on CFAs either.
But I would think that a competent console designer would take care of these things no matter discrete, VFA, CFA, tubes, what have you. It seems pretty straightforward engineering to design for flat freq response even with 30 inserts in any technology. It's not that such things elude the most basic freq response measurements.
Jan
https://forums.adobe.com/thread/370714
300 dpi per pixel the 4 colours smudge together to make a pixel of the required colour, though as the above shows offset printing is done by lpi, offset printing the image is printed from the plate to a rubber buffer then to the paper.
300 dpi per pixel the 4 colours smudge together to make a pixel of the required colour, though as the above shows offset printing is done by lpi, offset printing the image is printed from the plate to a rubber buffer then to the paper.
Dan if you have Cooledit you can easily do the experiment. Take silence at 24 bits and apply dither and listen without turning up the volume. I don't know of a microphone or preamp that reaches -140dB SNR do you?
Color offset is half-toned with a screen, it was quite an art getting the angles right when making color separations to prevent moire patterns. The dot are still resolvable under magnification. I suppose this has been highly automated these days.
Vector Halftone Week: introduction to vector halftones - Astute Graphics
Sorry, but that are FACTS.
Like cars manufacturers designed all RWD before Citroen 15 Traction...
The thing, i suppose, was because many desks used OPAs, and there were only VFAs at this time.
And, as long the specs were 20-20 000Hz at +-0.5dB, specifications were filled.
Market was more sensitive to the features, noise of the mike preamps, numbers and flexibility of the correctors, automation, quality of the faders, look, reliability etc.
Don't believe that most of the mixing desks (monitors, amplifiers etc.) were top of the audiophile gear. A fashion market.
My taste for CFAs is everything but religious. I use this topology where and when it brings more advantages than inconveniences comparing to others. Here, an obvious case. Only reason why i talked about here.
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Autotypical Mixing, the resolution is 300dpi (or 600 for top end) the colour pixel is made up of different dot sizes of each of the CYMK inks often one on top of the other.
Colorimetry - Distinction between color mixtures
Colorimetry - Distinction between color mixtures
I didn't even want to go into that, it could be a total pain, that's why they use lines per inch, the image should be 1.5 to 2X PPI the required LPI to create the halftone image.
Nice link, brings back happy memories of my old Art courses.....
Ahh, its facts you are after.
OK, see attached.
Your insertion of 30 extra channels means a loss of loop gain of 30 x which happens to be close to 30dB also.
The lowly 20 cents each in quantities CFA NE5532, used in consoles by the millions probably, clearly shows the effect of falling bandwidth with gain, of course.
Actually, going from unity gain to 30 dB noise gain (with 30 inserts) lowers the closed loop bandwidth from 10Mhz to about 250kHz. It's a tribute to your and your wive's ears that you can clearly hear this difference! 😉
Jan
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