Audio and video trends for 2019

Here are some audio and video trends for 2019:

The global Hi-Fi Systems market was valued at million US$ in 2018 and is expected to grow. EISA Awards has selected Hi-Fi product category winners, but I did not see anything really fancy new innovations that would excite me there. The Hi-Fi speaker market has seen considerable consolidation over the years but is expected to grow. The global Hi-Fi speaker system market is highly competitive. Various established international brands, domestic brands and as well as new entrants form a competitive landscape. The market is expected to have higher growth rate as compared to the previous years due to the booming electronic industry globally. It is due to the rising income of individuals globally and increasing affordability of technology products globally. Due to technological adoption and smart gadgets, North America region is showing steady growth in the Hi-Fi speaker system market. On technology standpoint the Hi-Fi market is mainly based on pretty much stabilized technology as class D amplifiers have been on mainstream for many years.

Smart TVs are everywhere. The vast majority of televisions available today are “smart” TVs, with internet connections, ad placement, and streaming services built in. Despite the added functionality, TV prices are lower than ever. Your new smart TV was so affordable because it is collecting and selling your data. It is clear that TV companies are in a cutthroat business, and that companies like Vizio would have to charge higher prices for hardware if they didn’t run content, advertising, and data businesses. Google wants sensors and cameras in every room of your home to watch, analyze, you, patents show.

Streaming services competition stays high. Apple’s embracing the TV industry for the first time: Vizio and LG TVs will support AirPlay 2 and HomeKit, while Samsung TVs will get an iTunes Movies & TV app, as well as AirPlay 2 support. Google and Amazon are playing are important players on smart speaker markets.

4K video resolution is still as hot as in 2019 – it us becoming mainstream and getting cheaper. Peraso showcases 4K wireless video at CES 2019. LG has produced a market-ready rollable OLED TV. The new 75-inch 4K Micro LED TV announced at CES 2019 proves Samsung is serious about scaling the technology to do battle with OLED. But it seems that even in 1029 “4K” trend remains woefully deficient from a compelling-content-availability standpoint. CES 2019 is already full of weird and wonderful monitors.

But new higher 8K resolution is being pushed to market. The “8K” (resolution) tagline was apparently everywhere at CES this year. Samsung announced a 98-inch 8K TV because why not. LG has come strong to CES 2019 with an 88-inch 8K OLED TV, a 75-inch 8K LED/LCD TV, HDMI 2.1, new auto calibration features, Alexa built in, and many more features. It seems that this ongoing evolution is occurring out of necessity: as a given-size (and -pixel-dense) display becomes a low profit margin commodity, manufacturers need to continually “up-rev” one or both key consumer-attention-grabbing parameters (along with less quantifiable attributes like image quality) in order to remain profitable … assuming they can continue to stimulate sufficient-sized consumer demand in the process. I am not sure if they can stimulate 8K to mass market in next few years.

Wall size TVs are coming. Samsung announced a modular TV at CES. Samsung first showcased this MicroLED TV technology at CES 2018, showcasing how the screens were composed of millions of individual LEDs. Individuals screens could be combined to create massive displays, which the company calls The Wall TV. The wall-sized displays shown in recent years at CES are, in my opinion, quite ridiculous, at least for the masses.

 

HDMI updates are coming. At present, the HDMI equipment uses the 2.0 standard (adopted in 2013) tht provides support for example for 4K video. HDMI Forum announced a new 2.1 standard already in November 2017, but it just starter showing in CES in January 2019. 8K fiber-optic HDMI cables seen at CES 2019. The 2.1 standard is a big change in technology at the bus bandwidth increases from 18 gigabit to 48 gigabits per second. This enables up to 10K video transmission and up to 120 frames per second.

Bendable displays are really coming to PCs and smart phones. LG’s “rollable” display shown this year neatly showcased the technology’s inherent flexibility while also addressing the question of how to hide a gargantuan display when it’s not in use. Several foldable smart phones have been shown. Chinese company Royole was showing off the FlexPai at CES in Las Vegas.

Micro displays for VR and AR glasses have developed. MicroLED is better looking, more efficient and more versatile than any previous display tech. Now all Samsung, Sony, LG and others have to do is figure out how to manufacture it affordably.Nanoco Technologies and Plessey Semiconductors have partnered to shrink the pixel size of monolithic microLED displays using Nanoco’s cadmium-free quantum-dot (CFQD quantum dots) semiconductor nanoparticle technology. Microchips and organic LEDs that deliver 4K-like high resolution displays a quarter of the size and half the weight of existing virtual reality (VR) headsets have been developed under a European Union project. Marc Andreessen says VR will be “1,000” times bigger than AR even though VR seems to be the popular whipping boy amongst the tech community.

There seems to be no shortage of angst with the current (and unfortunately burgeoning) popularity of usage of the term artificial intelligence (AI). Intelligence has been defined in many ways which makes it hard to get good picture on what is going on. I am still waiting for sensible intelligent AI to do something useful. But the ability for a sufficiently trained deep learning  system to pattern-match images, sound samples, computer viruses, network hacking attempts, and the like is both impressive and effective.

Potential problems related to the coming of self-driving car technologies and cameras are expected. A man at CES in Las Vegas says that a car-mounted lidar permanently damaged the sensor in his new $1,998 Sony a7R II mirrorless camera. Man says CES lidar’s laser was so powerful it wrecked his $1,998 camera because the LIDAR laser power rules ensure lasers are safe for human eyes—but not necessarily for cameras. Is this something that camera and car manufacturers need to figure out together?

2019 Will Be the Year of Open Source from software and even hardware. Open source video player app VLC has now reached 3 billions downloads.

When almost all AV products are pushing more and more features, it seems that almost Everything is too complicated for an average Joe.

 

1,491 Comments

  1. Tomi Engdahl says:

    What a big bummer! But what a great guy that helped build our future.

    Lou Ottens, Inventor Of The Cassette Tape, Has Died
    https://www.npr.org/2021/03/10/975598869/lou-ottens-inventor-of-the-cassette-tape-has-died

    Lou Ottens, who put music lovers around the world on a path toward playlists and mixtapes by leading the invention of the first cassette tape, has died at age 94, according to media reports in the Netherlands. Ottens was a talented and influential engineer at Philips, where he also helped develop consumer compact discs.

    The cassette tape was Ottens’ answer to the large reel-to-reel tapes that provided high-quality sound but were seen as too clunky and expensive. He took on the challenge of shrinking tape technology in the early 1960s, when he became the head of new product development in Hasselt, Belgium, for the Dutch-based Philips technology company.

    “Lou wanted music to be portable and accessible,”

    Ottens’ goal was to make something simple and affordable for anyone to use. As Taylor says, “He advocated for Philips to license this new format to other manufacturers for free, paving the way for cassettes to become a worldwide standard.”

    But first, he had to invent it.

    The result was unveiled to the world in 1963, and the “compact cassette” quickly took off: It was “a sensation” from the start, Ottens told Time in 2013, on the cassette’s 50th anniversary.

    Reply
  2. Tomi Engdahl says:

    Which Streaming Service Has the Most Subscriptions?
    https://www.visualcapitalist.com/which-streaming-service-has-the-most-subscriptions/

    Reply
  3. Tomi Engdahl says:

    https://www.uusiteknologia.fi/2021/03/11/vinyyliaanilevyjen-valmistus-palaa-uusin-konein-suomeen/

    Reply
  4. Tomi Engdahl says:

    Audio measurement software

    That’s the long way around of doing it. Download Room EQ Wizard, ensure your mic is calibrated and then let REW do all the work for you.
    https://www.roomeqwizard.com/

    You can also use HolmImpulse from Holm Acoustics. This uses a “Chirp” for measurements, which largely eliminates the effects of room acoustics. Additionally, you would only ever measure one channel at a time with a single mic.
    http://www.holmacoustics.com/holmimpulse.php

    Reply
  5. Tomi Engdahl says:

    All HDMI and DisplayPort Versions EXPLAINED
    https://www.youtube.com/watch?v=anLY_KKjy_M

    Reply
  6. Tomi Engdahl says:

    “It’s not about consumption of technology, it’s about experiencing a better way of telling the stories of the greatest athletes of the world” — wise words from OBS Chief Executive Yiannis Exarchos. The Olympic torch is being passed to #AlibabaCloud for a historic viewing event. Watch the story of earth’s most athletic in a way that no one has ever before: https://bit.ly/3q5SDqQ

    OLYMPIC GAMES BROADCASTING VIA THE CLOUD: TECHNOLOGY AT THE SERVICE OF STORYTELLING
    https://www.olympic.org/news/olympic-games-broadcasting-via-the-cloud-technology-at-the-service-of-storytelling

    In simple terms, the broadcast footprint at the Olympic Games Tokyo 2020 will be 30 per cent smaller than it was at Rio 2016, while content production will be up by about 30 per cent. Add the fact that technology is enabling a host of new ways to tell the stories of the Games and you can see that OBS boss Yiannis Exarchos is excited about uncovering new opportunities.

    The challenge of producing more than 9,000 hours of sports content over 17 days in the current climate is clearly very real. But for Olympic Broadcasting Services (OBS) Chief Executive Yiannis Exarchos, it is all about approaching it from a different angle.

    “You should never let the opportunity of a major crisis go unused and unexploited,” Exarchos said. “Look at the learnings and uncover every opportunity so that we do what we do in a way that is far less impactful for the environment and the host cities, but at the same time is exciting.”

    “Technology provides this through the world of data, through the world of augmented reality, through the world potentially of virtual reality – all things we will try and start introducing in Tokyo and in the next Games,” Exarchos explained.

    In content terms this means more coverage in different formats, with the needs of social media and digital outlets high on the agenda. For instance, Content+, a web-based platform primarily dedicated to short-form and digital content, will be far more prominent in Tokyo than ever before. “Broadcasters can use this content, repurpose it; they can practically do it from their mobile phones in the back of a car,” Exarchos said, smiling.

    This focus will mean there will be far more behind-the-scenes coverage than ever before, with consumers getting a real insight into what it means to be an Olympic athlete. Not that innovations are limited to off-field action – Tokyo 2020 will also be the first Games coverage to be natively produced in 4K HDR, something Exarchos was “not sure could actually be done” just a matter of months ago.

    “It’s not about consumption of technology,” the OBS boss explained. “It’s about experiencing a better way of telling the stories of the greatest athletes of the world.”

    Reply
  7. Tomi Engdahl says:

    Viime vuoden syksyllä tuli voimaan EU:n saavutettavuusdirektiivi. Se edellyttää tietyiltä toimijoilta muun muassa nettiin ladattavaan videotuotantoon tehtäviä tekstityksiä. Vaikka sitä ei kaikilta vielä vaaditakaan niin sen käyttöönotto videotuotannossa on suotavaa.

    Tekstitysten tekeminen videotuotantoon on nykyään erittäin helppoa ja sen tekemiseen on monia erilaisia vaihtoehtoja.
    https://www.compuline.fi/blog/ajankohtaista-1/post/videoiden-tekstitys-21

    Reply
  8. Tomi Engdahl says:

    22 Ways To Get More Views On YouTube
    https://www.uscreen.tv/blog/how-to-get-more-views-on-youtube/?utm_source=facebook&utm_medium=social+&utm_campaign=blog&fbclid=IwAR1oUbkqpQrB5nDrmJsEcJATOu-aE2IRRpEBKPJzzNr1-jrFv7XbLzwD2Bo

    This is the complete guide on how content creators can get more views on YouTube in 2021.

    I’m going to show you 22 actionable strategies you can use to:

    Drive more traffic to your YouTube content.
    Grow your subscribers.
    Rank higher for the right keywords.
    Build a thriving YouTube community.
    Sound like the results you’re looking for?

    Then let’s dive right into it…

    Reply
  9. Tomi Engdahl says:

    https://techcrunch.com/2021/03/11/epidemic-sound-raises-450m-at-a-1-4b-valuation-to-soundtrack-the-internet/?tpcc=ECFB2021

    Reply
  10. Tomi Engdahl says:

    https://en.wikipedia.org/wiki/Thiele/Small_parameters

    WinISD is freeware speaker designing software for Windows environment. You can design Closed, Vented and Bandpass boxes with this program. It also allows you to calculate few different types of filters.

    http://www.linearteam.org/

    Reply
  11. Tomi Engdahl says:

    https://www.roomeqwizard.com/

    REW is free room acoustics and audio device measurement and analysis software for room, loudspeaker and device responses. The audio measurement and analysis features of REW help you optimise the acoustics of your listening room, studio or home theater and find the best locations for your speakers, subwoofers and listening position. It includes tools for generating audio test signals; measuring SPL and impedance; measuring frequency and impulse responses; measuring distortion; generating phase, group delay and spectral decay plots, waterfalls, spectrograms and energy-time curves; generating real time analyser (RTA) plots; calculating reverberation times; calculating Thiele-Small parameters; determining the frequencies and decay times of modal resonances; displaying equaliser responses and automatically adjusting the settings of parametric equalisers to counter the effects of room modes and adjust responses to match a target curve.

    Reply
  12. Tomi Engdahl says:

    https://patents.justia.com/patent/10728667.

    A different type of a crossover system which separates stereo channels up to 10,000 times per second depending on frequencies of individual channels.

    Reply
  13. Tomi Engdahl says:

    https://service.shure.com/s/article/mute-switch-with-phantom-power?language=en_US

    Reply
  14. Tomi Engdahl says:

    Evolution of electronic music: https://www.youtube.com/watch?v=MqukyEC3qWM Ambient music has been a thing much longer than I originally thought…

    Reply
  15. Tomi Engdahl says:

    Audio cassette tape inventor Lou Ottens dies aged 94
    https://www.bbc.com/news/world-europe-56355444

    Reply
  16. Tomi Engdahl says:

    Jaron Schneider / PetaPixel:
    Adobe adds a new feature to Adobe Camera Raw called Super Resolution, which uses AI to double linear resolution of a photo, increasing its pixel count by 4x — Adobe has shipped the first version of Photoshop that can run natively on Macs equipped with Apple Silicon and also has announced …

    Adobe Unveils Photoshop for Apple Silicon and ‘Super Resolution’ for ACR
    https://petapixel.com/2021/03/10/adobe-unveils-photoshop-for-apple-silicon-and-super-resolution-for-acr/

    Adobe has shipped the first version of Photoshop that can run natively on Macs equipped with Apple Silicon and also has announced a new feature for Adobe Camera Raw (ACR) called “Super Resolution” that is available today.

    Super Resolution is a new feature to Adobe Camera Raw that uses machine learning technology to boost the resolution of an image, resulting in “higher quality results than ever before.”

    “Imagine turning a 10-megapixel photo into a 40-megapixel photo,” Chan says. “Imagine upsizing an old photo taken with a low-res camera for a large print. Imagine having an advanced ‘digital zoom’ feature to enlarge your subject.”

    Super Resolution builds on a technology Adobe launched two years ago called Enhance Details, which uses machine learning to interpolate RAW files with a high degree of fidelity, which resulted in images with crisp details and fewer artifacts. Chan says that at the time, he and the team reasoned that similar machine learning methods might enable them to improve photo quality in other ways.

    The result of the past two years of research and development on this topic has led to the second “Enhance” feature: Super Resolution.

    “The term ‘Super Resolution’ refers to the process of improving the quality of a photo by boosting its apparent resolution,” Chan explains. “Enlarging a photo often produces blurry details, but Super Resolution has an ace up its sleeve: an advanced machine learning model trained on millions of photos. Backed by this vast training set, Super Resolution can intelligently enlarge photos while maintaining clean edges and preserving important details.”

    While Chan admits that adding more megapixels isn’t always necessary (often it is not), sometimes it really is necessary.

    while many standalone cameras and brand-new smartphones boast a lot of resolution, many of the phones that are in real people’s hands in the world are still between 12 and 24-megapixels, which isn’t a lot especially if you want to make a print.

    The feature works not just on RAWs, but also on other formats like JPEGs, PNGs, and TIFFs.

    Super Resolution doubles the linear resolution of a photo, which means that the resulting image will have twice the width and twice the height of the original, or four times the pixel count. Images are currently limited to 65,000 pixels on the long side and 500-megapixels.

    “Enhance Details was the first Enhance feature. Super Resolution is the second. We’re now looking into ways to extend Super Resolution to produce even larger and cleaner results,” Chan says. “We’ll also be exploring other potential applications of the same underlying technology, such as improved sharpening or noise reduction. Anything we can do to make images look better is fair game!”

    Reply
  17. Tomi Engdahl says:

    Sony to Release Large Format CMOS Image Sensor with Global Shutter Function and Industry’s Highest Effective Pixel Count of 127.68 Megapixels
    https://www.sony.net/SonyInfo/News/Press/202103/21-021E/

    Delivering Increased Pixel Count, High-Speed Imaging Performance, and Contributing to Solutions in the Field of Advanced, Diversified Industrial Equipment

    Reply
  18. Tomi Engdahl says:

    Time’s Almost Up For The FrankenFMs: The Impending Switchoff Of Analog TV
    https://hackaday.com/2021/03/13/times-almost-up-for-the-frankenfms-the-impending-switchoff-of-analog-tv/

    In a time when multi-channel digital TV is the norm it’s a surprise to find that a few low-power analog stations are still clinging on in some American cities. These are sometimes fill-in stations for weak signal areas, or more usually the so-called “FrankenFM” stations who transmit static images or digital patterns and derive income from their sound channel lying at the bottom end of the FM band to form unintended radio stations. Their days are numbered though, because the FCC is requiring that they be turned off by July 13th. There’s a way forward for the broadcasters to upgrade to low-power digital, but as you might expect they’re more interested in retaining the FrankenFM frequency from which they derive income.

    Reply
  19. Tomi Engdahl says:

    https://hackaday.com/2021/03/15/theres-a-fungus-among-us-that-absorbs-sound-and-does-much-more/

    Reply
  20. Tomi Engdahl says:

    https://hackaday.com/2021/03/17/hacking-a-digital-microscope-camera-for-fun-and-automated-pcb-inspection/

    Reply
  21. Tomi Engdahl says:

    There’s not much inside TVs these days
    https://www.youtube.com/watch?v=r2GX2TXwAO8

    I didn’t realise how far LCD TVs had evolved since I last looked inside one. They have been stripped back to the minimum of standard modules. Mainly the power supply and signal processor.
    This means that repairing them has become a board swapping exercise. They’re so standardised that salvaged and new boards cost less than the time to trace faults on the PCB itself.

    I’m not sure I want to get involved in changing the LEDs as it looks quite an irksome job removing the screen layers and avoiding dust getting in between them.

    Reply
  22. Tomi Engdahl says:

    Social media vs reality? Japanese ‘biker chick’ turns out to be a 50-year-old ‘uncle’ using FaceApp
    https://www.rt.com/news/518447-japanese-biker-girl-faceapp/

    A Japanese man has come clean that he’d facetuned himself into a cute biker girl for his travel blog, but the reveal hasn’t deterred fans from supporting him.

    The Twitter account “@azusagakuyuki” is what you’d expect a niche influencer to be. An attractive young woman posts photos of herself riding a bike to picturesque locations in Japan, tinkers with the vehicle and occasionally promotes an energy drink or some chocolates to subscribers.

    But there is a catch. The person in the pictures is actually a 50-year-old man with long lush hair, who uses face-features manipulation tool FaceApp to alter images. The truth has been suspected for some time and got reinforced in mid-February, when the latest pic of a bike showed some suspicious face reflections in rear-view mirrors.

    Reply
  23. Tomi Engdahl says:

    The world’s simplest phantom powered condenser microphone design!
    https://m.youtube.com/watch?v=jM2tdXXaa-A&feature=youtu.be

    Learn how to build a DIY microphone. Is it really as simple as promised?

    Reply
  24. Tomi Engdahl says:

    https://etn.fi/index.php/13-news/11912-nappikuulokekin-on-kompromissi

    Reply
  25. Tomi Engdahl says:

    Phase Linear gear
    https://www.youtube.com/watch?v=aNQH9K3soes
    Phase Linear was truly the “bomb” in its days. Nearly every disco in Denver I DJ’d back in the seventies employed them (other than one that used a Crown), and boy, could they deliver. Also didn’t know that Bob Carver founded the company. Great video and walk down memory lane! Thanks, Paul!

    Reply
  26. Tomi Engdahl says:

    HDMI vs. DisplayPort: Which Should I Use for My PC Monitor?
    https://uk.pcmag.com/how-to/117669/hdmi-vs-displayport-which-should-i-use-for-my-pc-monitor

    Not sure whether to hook your new monitor up to your computer using HDMI or DisplayPort? Different ports have different capabilities and compatibilities; here’s what you need to know

    Reply
  27. Tomi Engdahl says:

    https://purifi-audio.com/eigentakt/

    Reply
  28. Tomi Engdahl says:

    https://www.muffsy.com/blogs/post/Measuring-the-Burson-V6-Discrete-Op-Amps-Part-3-V6-Classic-THD

    Reply
  29. Tomi Engdahl says:

    https://www.electronics-tutorials.ws/amplifier/class-ab-amplifier.html

    Reply
  30. Tomi Engdahl says:

    Ruisrockin rantalava on katoavaa perinnettä – tietokonepelit ovat uusi sukupolvikokemus
    https://www.markkinointiuutiset.fi/artikkelit/ruisrockin-rantalava-on-katoavaa-perinnetta-tietokonepelit-ovat-uusi-sukupolvikokemus

    Pikaruokaketjut ja sporttimerkit tarjoavat sponsoroituja aktiviteetteja pelien sisällä, ja muotibrändit ovat lähteneet mukaan avatar-kisaan ja virtuaalisiin mallistoihin, kirjoittaa Laura Olin.

    Reply
  31. Tomi Engdahl says:

    Bloomberg:
    In 2020, 60% to 70% of 9-year-old YouTuber Ryan Kaji’s $30M annual revenue came from merchandise licensing deals, passing YouTube ad revenue for the first time — Ryan Kaji is one of the most popular YouTube creators in the world, with a main channel that’s drawn 29 million subscribers interested …

    The Preteen’s Guide to Getting Rich Off YouTube
    https://www.bloomberg.com/news/articles/2021-03-22/how-youtube-channel-ryan-s-world-makes-most-of-its-revenue-merchandise-not-ads

    Ryan Kaji’s video empire makes most of its revenue from merchandise, not ads.

    Reply
  32. Tomi Engdahl says:

    Damien Wilde / 9to5Google:
    YouTube confirms it is testing a feature in the US that automatically detects products in videos and provides related content links — As part of one of YouTube’s latest experiments, the video-sharing platform looks to expand beyond the “Products in this Video” feature that auto-detects specific items …

    YouTube experiment will auto-detect products in videos and provide related content links
    https://9to5google.com/2021/03/22/youtube-experiment-will-auto-detect-products-in-videos-and-provide-related-content-links/

    Reply
  33. Tomi Engdahl says:

    When in doubt 5532 is usually the best answer; and at worst a very good answer

    https://www.audiosciencereview.com/forum/index.php?threads%2Fdiscrete-opamp-review-sonic-imagery-vs-sparkos.10325%2F

    Reply
  34. Tomi Engdahl says:

    https://soundstagehifi.com/index.php/equipment-reviews/1528-nad-c298-stereo-amplifier

    Reply
  35. Tomi Engdahl says:

    https://hackaday.com/2021/03/22/a-hi-fi-speaker-from-some-foil-and-magnets/

    Reply
  36. Tomi Engdahl says:

    Why the Way We Calculate TV Energy Efficiency is Wrong
    https://spectrum.ieee.org/view-from-the-valley/consumer-electronics/standards/why-the-way-we-calculate-tv-energy-efficiency-is-wrong

    Energy consumption is probably not the first thing anyone considers when buying a new TV. Compared with obsolete CRTs, today’s LED-illuminated TV displays use very little energy, between 94 and 267 kilowatt-hours per year for a typical 55-inch display. (A CRT television of less than half that size used about twice as much energy.)

    But maybe you are someone who isn’t just shopping for screen size, styling, and smart TV features; maybe you care about energy. In the United States, there are two labels to look for. One is the EnergyGuide. This mandatory program, administered by the Federal Trade Commission (FTC), requires TV manufacturers to place a yellow label on the product, indicating the annual cost of operation in dollars, assuming typical use of 5 hours daily and electricity priced at 11 cents per kilowatt hour. For the aforementioned 55-inch TV, an EnergyGuide estimate might be around $22 per year.

    The other label comes from Energy Star, a voluntary program that recognizes the most energy efficient models of their generation. A joint effort by the U.S. Environmental Protection Agency (EPA) and the Department of Energy (DOE), Energy Star updates its standards as efficiencies improve across the board.

    Reply
  37. Tomi Engdahl says:

    The zobel is load to ensure damping/stabilty at RF, R and C values are not critical and there is wide range in values used in commercial amplifiers with values from 4R7>22R and C from 0.047uF>0.47uF. That said fig8 cable is around 100R characteristic impedance, I have found 2W MF 100R across each end of speaker cable (ie at amp output terminals and at loudspeaker input terminals) is a better solution and sounds better. 1R load at RF is too low, 10% tolerance for whatever values you choose is fine.

    Reply
  38. Tomi Engdahl says:

    What skills do audiophile’s require?
    https://www.youtube.com/watch?v=XQRWXJcrK7U

    Does it take any sort of special skills to become an audiophile?

    Active listening to the music itself and not just casually listening to background music is a useful audiophile skill

    Brilliant electronic engineering skills helps, but musical appreciation should be number one.

    Reply
  39. Tomi Engdahl says:

    https://www.roomeqwizard.com/

    REW is free room acoustics and audio device measurement and analysis software for room, loudspeaker and device responses. The audio measurement and analysis features of REW help you optimise the acoustics of your listening room, studio or home theater and find the best locations for your speakers, subwoofers and listening position.

    Reply
  40. Tomi Engdahl says:

    https://enjon.uk/2019/09/01/a-diy-approach-to-distortion-measurements-for-audio-amplifiers/

    Reply
  41. Tomi Engdahl says:

    Julie Jargon / Wall Street Journal:NEW
    A look at app-based hearing devices for people with mild-to-moderate hearing loss, as FDA prepares rules to allow for more over-the-counter hearing aid options — In-ear AI and smartphones give people with mild-to-moderate hearing loss more choices than ever, but apps can be a hard sell for some

    New Hearing Aids, iPhone Apps and Tech Mean More Hearing-Loss Options—But Also New Struggles
    https://www.wsj.com/articles/hearing-aids-iphone-apps-and-new-tech-mean-more-ways-to-deal-with-hearing-lossbut-same-old-anxiety-11616850000?mod=djemalertNEWS

    In-ear AI and smartphones give people with mild-to-moderate hearing loss more choices than ever, but apps can be a hard sell for some

    Reply
  42. Tomi Engdahl says:

    At the end of the day audio is objective what sounds great to one sounds different to another.yes there is science involved.

    But at the end of the day if you get pleasure out of listening from a pa over a “audiophile” setup it’s up to you. Or solid state vs tube amplifiers

    There’s too much snake oil in the audio world and everyone has there opinion.

    Remember to enjoy the music. That’s what’s important.

    Reply
  43. Tomi Engdahl says:

    AUDIO MYTH – “DAMPING FACTOR ISN’T MUCH OF A FACTOR”
    https://benchmarkmedia.com/blogs/application_notes/audio-myth-damping-factor-isnt-much-of-a-factor

    Reply
  44. Tomi Engdahl says:

    Speaker Wire
    A History
    http://www.roger-russell.com/wire/wire.htm?fbclid=IwAR3pN6Uke_unhIKB88r4wBrJQ7X8OYiwGU45UVnVZJ2_sjAAtcb4Jk1MY5k#wiretable

    Reply
  45. Tomi Engdahl says:

    Chrome can now caption audio and video
    https://blog.google/products/chrome/live-caption-chrome/

    Captions make online content more accessible. If you’re in a noisy environment, trying to keep the volume down, or are part of the 466 million people in the world who are deaf or hard of hearing, having captions lets you follow along to whatever content you are watching — whether it’s viral feta pasta videos, breaking news or a scientist discussing their latest research.

    Unfortunately, captions aren’t always available for every piece of content. Now with Live Caption on Chrome, you can automatically generate real-time captions for media with audio on your browser. It works across social and video sites, podcasts and radio content, personal video libraries (such as Google Photos), embedded video players, and most web-based video or audio chat services.

    Reply
  46. Tomi Engdahl says:

    Capacitor Test
    http://www.humblehomemadehifi.com/Cap.html

    Reply
  47. Tomi Engdahl says:

    https://diyaudiostore.com/pages/vfet-information-page?mc_cid=19de835653&mc_eid=48a140e679

    DIY low-power, single-ended, zero-feedback, class A amplifier using VFET followers biased by a constant current source with multiple front-end options.

    https://www.diyaudio.com/forums/pass-labs/370282-diy-sony-vfet-pt-1-a.html

    Reply
  48. Tomi Engdahl says:

    What is it about VFET or MOSFET that’s desirable (or are they)?
    https://audiokarma.org/forums/index.php?threads/what-is-it-about-vfet-or-mosfet-thats-desirable-or-are-they.643420/

    Reply
  49. Tomi Engdahl says:

    https://www.quora.com/What-are-the-pros-and-cons-of-BJT-versus-FET-transistor

    Reply
  50. Tomi Engdahl says:

    https://geoffthegreygeek.com/understanding-amplifier-power/

    Reply

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