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The Audio Critic - krytyka współczesnego rynku audio


Kraft

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"Przeprowadzono kilka badań w celu sprawdzenia twierdzenia, że drogie kable audiofilskie mogą poprawić jakość dźwięku, ale konsekwentnie nie udało im się znaleźć żadnej znaczącej różnicy między dźwiękiem drogich kabli a dźwiękiem dobrze zaprojektowanych standardowych kabli. W rzeczywistości ślepe testy odsłuchowe wykazały, że nawet wyszkoleni słuchacze nie są w stanie rozróżnić różnych typów kabli, jeśli nie są świadomi, którego kabla słuchają."

A propos wyszkolonych słuchaczy:

http://harmanhowtolisten.blogspot.com/2011/01/welcome-to-how-to-listen.html?m=1

 

 

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36 minut temu, Kraft napisał:

@DiBatonio, fajnie, że przeczytałeś. I co sądzisz? 

A z kim związany jest blog Archimago?

😉

ChatGPT obok algorytmów na których jest oparty, zawiera odpowiedzi tendencyjne, oparte również na stereotypach, oczywiście obok tych sprawdzonych i pomierzonych rzecz jasna.

Wiele w tym racji, ale przebijają się też stereotypy dotyczące audio.

 

 

32 minuty temu, Amarok napisał:

Po tym tekście ChatGPT chyba podpadł kablarzom. Ciekawe jakby wyglądała dyskusja, gdyby taki ChatGPT miał tu konto na forum. Też by został wyprowadzony z równowagi. 😀

Ciekawe jak by wyglądała twoja porada lekarska, która byłaby oparta na gotowych odpowiedziach, a Ty jedynie mógłbyś sobie posłuchać chatbota?

Niestety, ale świat zmierza w tym kierunku, to kwestia czasu.

 

Edytowano przez DiBatonio
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1 godzinę temu, DiBatonio napisał:

Jak by nie patrzeć, prace naukowe, czy wypracowania z Uniwersytetu Południowej Karoliny.

Cóż z tego, że są bardziej prestiżowe uczelnie? Kunchur jest profesorem fizyki, od lat zajmuje się przewodnikami i ma też publikacje w czasopismach z  wyższej półki niż JAES (choćby w Physical Review Letters). Nie jest przypadkową osobą, jak Amir. :) Ja się i tak dziwię, że komuś na tyle poważnemu chciało się zająć audio. 

W każdym razie, od czerwca 2021 r. kable oficjalnie "grają" i można to wygooglać w 2 minuty. A u nas regularnie powracają argumenty strony przeciwnej, że nic nie stwierdzono, nikt nie przeprowadził testów itd. :)

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"Without giving away my exact age, I grew up in 1960s with analog electronics as my primary hobby. Learned that from my oldest brother who likewise had the same hobby and spent his nights and days designing electronics. This gave me an intuition for analog electronics which to this day serves me better any textbook or formal education.

 

Speaking of formal education, I naturally aimed to get an Electrical Engineering degree which I received in early 1980s (still trying hard to not give away my age!). During that time though, the personal computer revolution was upon us and I quickly fell in love with my second hobby: software. I programmed my Apple II and later managed the computer lab at the college where I wrote a bunch of custom software including an editor all the students used to write their programs.

 

During schooling, I worked at an electronics repair shop, fixing everything from audio equipment to VHF radios. That childhood experience really got cemented combined with a new skill of having to troubleshoot equipment, usually with no schematic. All in all, I repaired hundreds of pieces of equipment, getting a good feel for quality engineering versus not.

 

Back to the degree, once I graduated, the first job I found was actually software, not engineering. I became a Unix “kernel” (Operating system) developer working on then new, Unix operating system. That gave me another baptism by fire having to learn nearly half a million lines of code with nary any documentation. This was at a large minicomputer company producing systems costing nearly $300,000. Kernel work gets you pretty close to hardware and during that time, I got a very deep understanding of it. This was a good thing as Unix became the foundation for much of what we use today from Linux to Android, MacOS and Windows.

 

In late 1980s I had an opportunity to work at the computer division of Sony. Initially the job was building a software team to develop Unix but we proposed and won approval to design and build our own hardware to go with it. There we went deep, developing our own ASICs (large scale custom electronic IC), motherboards, audio subsystem, power supply, LCD display etc. Working for Sony was great as at that time they were in their peak of success and their quality standards were quite high. We combined that with great engineering from US in silicon valley and really pushed state of the art in design and simulation at that time.

 

It was during that time that I got exposed to products of a then new company, Audio Precision (AP). They had overnight obsoleted audio measurement products from likes of HP (now Agilent/Keysight). I bought one for the team but I was the only one who learned to use it. It cost a cool $25,000 which at the time (early 1990s) was quite a lot of money. Still is today.

 

Sony fell on hard times after acquiring Columbia Pictures so my team was let go. I was offered to stay there but I got bored and left. In return for some consulting though, I got to keep that original AP (which I later gave to my brother -- the unit I have now is much newer).

 

Having developed my hardware skills, the next two companies I worked for also developed hardware and software: Abekas Video Systems and Pinnacle (now part of Avid). There, I managed hardware, firmware and software engineers development high-end hardware for real-time effects, switching, graphics, editing, etc. I am fortunate enough to have managed a very smart team which won two technical Emmy Awards.

 

By then a new development was happening: the web. I had worked extensively on networking which was the underpinning of the Internet. The advent of browsers took that to a new level and I wanted to be a part of that. So when my ex-boss from Akekas called me to say he was leading a Stanford-university start-up that was streaming video on the web, I jump at the chance to lead engineering there.

 

This was in the days of dial-up modems and trying to send video and audio through such slow link was nothing short of a miracle. Still, we managed to do it well enough that the company got acquired by Microsoft back in 1997 (https://news.microsoft.com/1997/08/...timedia-strategy-with-release-of-netshow-2-0/).

 

I specialized at Microsoft in driving our technology through other products than just the PC. At the time everyone was the enemy of Microsoft it seemed so it was a big challenge. At the end, we did it with our products literally shipping billions of other devices and every Blu-ray player. Only Apple refused to ship and use it. To date, those products all generate significant royalty stream for Microsoft, long after I am gone from there.

 

During my time at Microsoft, as VP of Digital Media Division, I grew to manage a division of nearly 1000 engineers, testers, marketing and business development people. One of the groups I managed though was the signal processing team which produced audio and video compression technologies. Both of those relied on refreshing my knowledge of the core signal processing science back in college and learning a ton more about new domains like psychoacoustics. Formal and controlled testing was a part of that just the same. Through training, I became an “expert” in finding difficult audio distortions that many could not. This training is serving me well to this day in being able to pass audio objectivist challenges of blind tests of small distortions.

 

I am very proud of the accomplishments of my team at Microsoft as it led to winning yet another technical Emmy award (see https://www.flickr.com/photos/seanalex/351987677. I am the one on the right). I also received an incredible education working with my many top engineers from audio processing to streaming and audio subsystem in the OS.

 

I retired from Microsoft back in 2007 (officially left in 2008) and created a start-up which was acquired by Fortune 50 companies. I currently own a system integration company, Madrona Digital, that does security, audio/video, lighting, networking, etc. for mid to high-end homes and commercial buildings (no retail sales). This gives me great exposure to the industry and the “back story” of it.

 

So what does this all mean? Well, it means that I am very familiar with many aspects of the systems we talk about. I am comfortable talking about networking and streaming one minute, and good power supply design the next. Hey, we could even talk about patents, business aspects, etc.

 

No, it doesn’t mean I know more than anyone in these fields. Many people have more experience than me in their deep vertical. What it means is that I have a broader set of experiences than most, and I have the knowledge to dig deep and analyze what is going on after some 40 years of being immersed in all aspects related to audio and technology."

Nie wiem, czy taka przypadkowa.

 

 

 

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1 godzinę temu, Rafał S napisał:

W każdym razie, od czerwca 2021 r. kable oficjalnie "grają" i można to wygooglać w 2 minuty. A u nas regularnie powracają argumenty strony przeciwnej, że nic nie stwierdzono, nikt nie przeprowadził testów itd. :)

0,5 m XLR kontra 10 razy tańszy 2 m RCA.  Nieco egzotyczne porównanie. Może jakby RCA też miał 0.5 m, to by nic nie wyszło.

Edytowano przez Kraft
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8 minut temu, Kraft napisał:

0,5 m XLR kontra 10 razy tańszy 2 m RCA.  Nieco egzotyczne porównanie. Może jakby RCA też miał 0.5 m, to by nic nie wyszło.

Taaaaa.

Szkoda, że podobnych zarzutów nie macie do Reduktorka od szumów, który kiedyś pomierzył niby różne kable cyfrowe, a tak naprawdę pewno z jednej szpuli z chińskiej fabryki.

Najtańszy za 5zl, a najdroższy za ledwo 50zł.

Mistrzostwo, pomijam fakt użytego oscyloskopu o sondach pomiarowych nie wspomnę. 

 

Edytowano przez DiBatonio
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45 minut temu, Adi777 napisał:

"Without giving away my exact age, I grew up in 1960s with analog electronics as my primary hobby. Learned that from my oldest brother who likewise had the same hobby and spent his nights and days designing electronics. This gave me an intuition for analog electronics which to this day serves me better any textbook or formal education.

Speaking of formal education, I naturally aimed to get an Electrical Engineering degree which I received in early 1980s (still trying hard to not give away my age!). During that time though, the personal computer revolution was upon us and I quickly fell in love with my second hobby: software. I programmed my Apple II and later managed the computer lab at the college where I wrote a bunch of custom software including an editor all the students used to write their programs.

(...)

It was during that time that I got exposed to products of a then new company, Audio Precision (AP). They had overnight obsoleted audio measurement products from likes of HP (now Agilent/Keysight). I bought one for the team but I was the only one who learned to use it. It cost a cool $25,000 which at the time (early 1990s) was quite a lot of money. Still is today.

Sony fell on hard times after acquiring Columbia Pictures so my team was let go. I was offered to stay there but I got bored and left. In return for some consulting though, I got to keep that original AP (which I later gave to my brother -- the unit I have now is much newer).

(...)

Nie wiem, czy taka przypadkowa.

Gdybyś umiał czytać ze zrozumieniem tekstu uśmiałbyś się, jak ja. Podsumowując:

1. Nie powiem Wam, gdzie i kiedy zdobyłem formalne wykształcenie.

2. Tylko ja jeden z całego zespołu w Sony opanowałem super świetne bardzo drogie urządzenie.

3. Tamto super świetne bardzo drogie urządzenie oddałem za darmo, bo pieniądze nic dla mnie nie znaczą, zresztą było mnie stać na jeszcze bardziej super świetne  drogie urządzenie.

4. Wniosek - nie próbujcie mnie naśladować i powtarzać pomiarów, bo nie macie moich unikatowych umiejętności, nie stać Was na jeszcze bardziej super świetne  drogie urządzenie a nawet gdyby było Was stać, to nie opanowalibyście go, skoro tylko ja w całym Sony rozgryzłem starszy model.

5. Możecie mnie tylko podziwiać i słuchać w nabożnym milczeniu. Nie czytajcie prac naukowych, bo piszą je ciemniacy albo oszuści, którzy nie mają moich unikatowych umiejętności. Prawdę znajdziecie tylko na mojej stronie i moim kanale youtube. Przekażę Wam ją tylko ja - ostatni ocalały mnich z Shaolin demaskujący kłamstwa branży i przekupnych pseudonaukowców swoim jeszcze bardziej super świetnym  drogim urządzeniem.

Czy wszyscy czytają to, co ja??? :) :) :)

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