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Old 29th March 2013, 05:55 PM   #37541
qusp is offline qusp  Australia
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no problem George, nothing I said was meant to reflect on you, other than perhaps missing the ancient date before linking it but I didnt see it either.
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Old 29th March 2013, 05:59 PM   #37542
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Originally Posted by scott wurcer View Post
Sounds like Carver BTW I was glancing at the FIFO thread, good stuff!
Carver used to come here for visits as he had a wife from here.

Very entertaining song and dance. But he did come up with some clever circuits. I liked using a light dimmer into a power transformer to reduce the core size required. The explanation for the magnetic field amplifier was magical!

Now a better example of old technology that still is extremely useful can be found here: http://www.repeater-builder.com/humor/signetics-wom.pdf
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Old 29th March 2013, 06:23 PM   #37543
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Originally Posted by simon7000 View Post
Demian

The analyzer is now $10,000! Pat has one and this is his answer attached.

ES
Not that I had $5K when it was the Miles time probe but that would have been a smart move.

The Morion oscillator is quite good. (Straight from St. Petersburg.) They are not real expensive. Your measurement stops at 1 KHz. Normally for Jitter for AES the range is something like 10 Khz to 100 Hz. Cutting off the low frequencies gets better numbers. Are your customers number freaks or just interested in verification?
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Old 29th March 2013, 06:25 PM   #37544
bcarso is offline bcarso  United States
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Originally Posted by simon7000 View Post
The Meitner Interview is 20 years old! It's nice to know DIY has caught up.
Yes I suspected that was quite an old interview.

I once complained to JA about the way that the Meitner box probed sensitive circuits, a rare letter to editor that got published (I leavened the criticism with plenty of praise).
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Old 29th March 2013, 06:26 PM   #37545
gpapag is online now gpapag  Greece
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no problem George, nothing I said was meant to reflect on you, other than perhaps missing the ancient date before linking it but I didnt see it either.
I never saw it as you reflecting on me. Don’t worry.

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Originally Posted by vacuphile View Post
I think the interview with Meitner is a fine example of Voodoo-electronics.
The only point I found a bit obscure, was on the reference of Bruel & Kjaer article. But he may be right there to. See the reference (very technical but SY and Scott may enjoy them)
http://www.bksv.com/doc/TechnicalReview1982-3.pdf
http://www.bksv.com/doc/TechnicalReview1982-4.pdf
see also addendum page 52 here
http://www.bksv.com/doc/TechnicalReview1983-1.pdf



George
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Old 29th March 2013, 06:49 PM   #37546
bcarso is offline bcarso  United States
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Originally Posted by gpapag View Post
I never saw it as you reflecting on me. Don’t worry.



The only point I found a bit obscure, was on the reference of Bruel & Kjaer article. But he may be right there to. See the reference (very technical but SY and Scott may enjoy them)
http://www.bksv.com/doc/TechnicalReview1982-3.pdf
http://www.bksv.com/doc/TechnicalReview1982-4.pdf
see also addendum page 52 here
http://www.bksv.com/doc/TechnicalReview1983-1.pdf




George
Interesting concept in the first Tech Review article. Makes me think of the Poynting vector in electromagnetics.
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Old 29th March 2013, 07:29 PM   #37547
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Originally Posted by 1audio View Post
Not that I had $5K when it was the Miles time probe but that would have been a smart move.

The Morion oscillator is quite good. (Straight from St. Petersburg.) They are not real expensive. Your measurement stops at 1 KHz. Normally for Jitter for AES the range is something like 10 Khz to 100 Hz. Cutting off the low frequencies gets better numbers. Are your customers number freaks or just interested in verification?
They have no one who understands the numbers, so they go into the owners manual to make them happy. Do you really need to see -150db at 10K to know it has bottomed out?

Note you are looking at the oscillator it gets dived by 256 to become a word clock.

And just what do you expect for freebees?

Last edited by simon7000; 29th March 2013 at 07:41 PM.
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Old 29th March 2013, 07:38 PM   #37548
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Originally Posted by john curl View Post
in the late 1970's, when a French audio company put forth a preamp with a fancy name, a control stick, like on a plane, for a volume control, AND when you looked inside, you found only very dated IC's and cheap parts.
Commercial airplane thrust levers.

In those days, Elipson stuck a ball loudspeaker on a pole.
Nowadays, the same company hangs them on threads from the ceiling.
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Old 29th March 2013, 07:39 PM   #37549
PMA is offline PMA  Europe
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Crazy thread . Lot of fun here.
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Old 29th March 2013, 07:43 PM   #37550
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Originally Posted by jacco vermeulen View Post
Commercial airplane thrust levers.

In those days, Elipson stuck a ball loudspeaker on a pole.
Nowadays, the same company hangs them on threads from the ceiling.
Jacco,

I suspect you know how much nice brass gears like those cost in small quantities. Shame they used straight cut ones.


Pavel,

You are a founding member of the club.


George.

The Bruel and Kjaer sound intensity probes were a big deal when first introduced and are a great tool for acoustical speech intelligibility problems among other uses.

ES

Last edited by simon7000; 29th March 2013 at 07:46 PM.
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