John Curl's Blowtorch preamplifier part II

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...................you name it.


Opening quote from that doc.:

The 2006 Statistics Canada census recorded 1 035 965 (single and multiple response) people of Dutch origin in Canada. The Dutch quickly adopted Canadian culture and traditions, and they have been integrated almost to the point of invisibility.


About 5 years ago we stayed at an old hunting lodge in France......about a days drive from Holland. The guy who ran it was a Dutchman - with a Dutch wife. He could not sit still for one moment but had to on one occasion jump on a grass cutter and use it for five minutes on a pretend golf course at the front of the hotel. He was an ex-army officer and the wife was a most excellent chef.

The other guests - about thirty of them were all dutch and of those 70+% were driving sober coloured Volvos..the remainder Mercs. They were almost invisible but as a national grouping they were the best mannered crowd of people one could bump into anywhere. One couple - a young banker and his lawyer wife - spent a lot of time with us. Very considerate and charming people who would fit in anywhere. So I am not surprised to read the paper Jacco referred to above. [The only exception of course is Ireland.]
 
. . . nothing funny with Afrikaans. When I was at school, we had a lot of kids arriving from the UK (their parents came for the weather and the jobs at the time, but I won't go into that). They quickly learned the language because the grammatical rules are very regular - no rules for rules like a lot of other languages.

The only thing they struggled with was the 'ghhh' sound (same in Dutch). But after a year or two most of them got it. Besides, its a very natural way to automatically clear your throat while you converse.
 
what kind of hearing acuity?

If you mean your fellow gene pool then in SA they have been pretty visible, and certainly very audible. Oh and in some cases completely bonkers! So few points for disappearing there 😛

Local evolutionary adapations for diet and climate is a fascinating area of study. Wish it made more sense to me. I am sure someone is trying to gene splice some native american modifications so they can sell a therapy that means you can eat nothing but steak and stay healthy!

Not sure how much has been done on hearing acuity between groups.

What kind of hearing acuity?😱

https://www.google.com/url?sa=t&rct...5b.pdf&usg=AFQjCNE331wC9w6QB8x4yWMnQBBxnomiGw
 
well actually was wondering if environment and language had any evolutionary pressures towards improved hearing amongst isolated groups.

Oh! That I don't know really, although I've never heard a Chinese person sing off key...

That paper I posted amuses me. GEBs, old guys, etc. What is their sensitivity to distortion with increasing SPLs? Assuming they have hearing losses.

nonlinearity of masking....🙂
 
The early Irish navvies ate nothing much other than beef and drank cold black Indian tea (Brewed very strongly)when working; beer & whiskey when off work.. They were noted for their physical size, strength and stamina. A lot of roads, railroads and canals remain as evidence [and memorials] to a long gone breed.

Much of the legendary stuff is either exaggeration by the American Irish themselves, or figment of other Americans such as the folk singing lot!
 
Human hearing beats the Fourier uncertainty principle

Human hearing beats the Fourier uncertainty principle

Oops! Old news for some of us. This was published in 2013 in Phys. Rev. Let. Those guys are so silly... Don't they know that we already know everything about human hearing? Geez, what a waste of time.

This has been posted before, if you are facile with all the mathematical formalism please enlighten us. Otherwise you don't have any more a clue as to what it implies than anyone else. Ironically those bad listeners, musicians, scored best.
 
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This has been posted before, if you are facile with all the mathematical formalism please enlighten us. Otherwise you don't have any more a clue as to what it implies than anyone else. Ironically those bad listeners, musicians, scored best.

Ah, but I do. A simple miscomparison. The target signals are not unknown. The uncertainty principle is misapplied. It still demonstrates interesting levels of acuity. (Sorry Charles but the same type of folks who try to tell you can't hear what you do hear can also be wrong going the other way.)
 
Highly inconspicuous (didn't even require a lingo swap)

http://guardianlv.com/wp-content/uploads/2014/03/boston-st-patricks-day-parade-loses-sam-adams.jpg

(I wonder how many British ex-pats in Hong Kong bothered to learn to speak Cantonese in the course of a century and a half. One may learn to regret it in due time)

Cantonese is exceedingly difficult to learn. Best to do so as you grow up, because to take it up as an adult is pure frustration. OTOH, I caught taxis in HK quite a few times where all the driver spoke was Cantonese and English - no Mandarin!

I met many westerners while living in China/Asia that spoke good Mandarin, Japanese etc. I cannot recall one that spoke Cantonese.

I can speak Afrikaans (very rusty now) and a smattering of Zulu which I use to entertain my grownup kids with at Christmas (I have an array of insults, threats and. unsavory expressions).
 
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When it comes to ferrite I have a rule of thumb. It's fine in general, but it's always negative under a particular condition. The condition is when it has 360* coverage over a conductor. It's basically harmless when it is the conductor and when it's used in CMC's or like devices that don't have 360* coverage of the conductor. It's very easy to test, put a ferrite clamp on any cables in your stereo and notice the drastic decline in quality... but your stereo using ferrite as a conductor or CMC was fine prior. Which I think is what DF96 was saying.

BTW no one here has mentioned transformers yet. Good transformers such as Jensen's don't degrade signal anymore than anything else that's acceptable among the highest quality of gear. Yet they do filter a considerable amount of RF ! Some equipment uses them for the in and out on everything.

It's somewhat of a losing game to try and filter off RF from signal. If you have to pass it through a capacitor, you've made a very significant change. In my experience bypass caps seem to have worse attributes than the RF. I think once you do your best to eliminate antenna creation (proper design), you live with whatever is left over or go balanced (which may not sound as good even with less RF). Transformers would be the one exception.

But the one area you can truly do huge filtration on is the incoming power to appliances and electrical components; and the payoff is better than trying to dick with signal.
 
More likely the beer. We have been known as drunken louts for about 1000 years now if you believe some sources.

Unfortunately, I have to agree, the Brits are well known for their wild booozing and even wilder sports fans.

A great pity, beacuse all it tales is to look back and note the things Britain could, and I feel should, be much better known for. In my view, nobody else known to me in the wrold makes biscuits, marmelades and jams like the Brits. And looking back just 50 years, I can think of a few Britons who did things nobody believed as possible or clever - De Havilland Mosquito spriings to mind. The idea of making an air force plane using plywood as your material of choice to make it light and able to do 420+ mph by installing two Rolls-Royce Merlin engines, with no armour plating reasoning that it needs none of that because it will outrun any fighter plane in the sky is so very British - but proven to be true. To go even faster you had to use jet propulsion. Still on planes, I have done a lot of my travelling 1967-1970 on BEA Hawker-Siddley Trident and can confirm that it was an exceptionally comfortable aircraft. And when Cosworth, even if owned by Ford it was still a very much British company, tuned your car, oh man, that was tuned all around such as few others could. And so forth.
 
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