Already he has gained a lot of enthusiastic followers and he has been training many people to propagate his method. For Skepter, the magazine of Dutch skeptics foundation Skepsis, I was asked to write an article about Hof and his method. In this article I focused more on the scientific evidence for the many claims surrounding the Wim Hof method.
The Genesis I've been preparing to write this article for many years! In order to make this investigation, I needed to create a laboratory-grade distortion processor, which I've just completed designing and building.
Let me introduce you to Bob's Blender Fig 1. In a moment we'll discover its features and controls. The underlying topologies in analog amplifiers, preamps, and equalizers have been evolving for decades.
At first there were only tubes: Then, of course came solid state, the germanium bipolar transistor which was not particularly good-soundingthen the silicon bipolar transistor, different types of FETs, discrete opamps which can be tube or solid stateand integrated circuit opamps which often contain hybrids of bipolar and FET elements.
Some people have claimed that the choice of individual components governs the sound of the circuit e.
So the circuit and layout are just as important as the component topology. That said, the first amplifier component ever designed, the triode tube invented in the year ! For my Blender, I chose a low voltage, low gain, ultra-miniature, metal and ceramic Nuvistor tube, the one for each channel.
The Nuvistor's footprint is smaller than a dime and it's not even as tall as the first joint of my thumb! My tube blender is flat, not even a tenth of a dB drop at 89 kHz, the limit of my measurement system, so I don't know where it drops off! Of course bandwidth also depends on the circuit, so one designer can make a 12AX7 extend higher in frequency than another through use of optimized impedances.
Bob's Blender is a processor that adds calibrated, controllable and repeatable amounts of second harmonic distortion, as little as 0. The ultra-miniature Nuvistor, from Wikipedia: Photo By Jim Rees en: The sonic nature of triode distortion and saturation.
Triodes have been variously characterized as sounding "smooth", "sweet", "round", "creamy", "warm", "three-dimensional" and "present". This is largely thanks to the presence of second harmonic, the triode's dominant harmonic component.
Distortion is signal compression, so as the input level goes up, the triode softens transients by adding more second harmonic twice the fundamentaland eventually other harmonics when levels get very high. In contrast with many solid state circuits, it starts to round off the corners in a gentle way.
Other devices and topologies including tetrode and pentode tubes are more prone to adding higher harmonics, which are known to sound harsh compared with the second harmonic that predominates in triodes. Witness the warm sound quality of the Mjolnir Pure Bipolar headphone amplifier and many of the Pass products as well as the Bricasti power amp and power amplifiers from Krell, many others.A "profile feature" is a newspaper article that explores the background and character of a particular person (or group).
The focus should be on a news angle or a single aspect of the subject. Some Basics on Magazine Writing. by W. Terry Whalin. Blank page.
You roll the paper into the typewriter and sit there poised with your hands on the keys. Or maybe . Blogging is a battle. A war to get your ideas the attention they deserve. Your enemy?
The dizzying array of online distractions that devour your readers. 3 thoughts on “ 62 of the Top Writing Articles from (That Can Help You in ) ” littleface January 7, at pm. Thank you for creating this article.
I’ve read some of the articles and know this is a great resource to come back to, so it’s been added to my favorites.
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