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Piano tunings are also "stretched" so that the harmonics are more in tune. This is especially needed on verticals and short "baby" grands. See https://en.wikipedia.org/wiki/Stretched_tuning

I have software I use when I tune my Bosendorfer 290 that calculates the stretch. Of course, the final tweaks are done by ear.

fortran77on From RGB to L*a*b* color space (2024)

We see different colors not because our eyes can tell what frequency a particular spectral color is, but because we have three types of color receptors, each of which is excitied by different broad ranges of overlapping frequencies.

fortran77on From RGB to L*a*b* color space (2024)

> For example, the Physical reality is the different frequencies of light. The Biological reality is that different types of cells on our retina respond with differing intensity to each of those frequencies.

Because this isn't true. And there are multiple ways with completely different combinations of intesities of light at different frequencies to have a color that most people will see as the same color. This is because the color receptors of our eye overlap.

fortran77on Ask HN: Would you use a job board where every listing is verified?

There's two sides to this. Companies need to be able to make sure they're able to locate (and not miss) viable candidates. But job-seekers need to know there's a legitimate company and an actual job. There are many job scams out there, especially for entry level, low-skill jobs.

In my early days, I once went through three interviews for a small "start up." On the third round, the founder admitted he couldn't pay me in anything but "equity" even though I specifically asked about funding and compensation on the first interview. (I got a very early "Craigs List" to pull the job listing--with an personal reply from Craig Newmark--and the "employer" settled with me for several thousand after I sent a demand letter and filed a claim in Santa Clara County small claims court for fraud.)

fortran77on Tell HN: I'm 60 years old. Claude Code has re-ignited a passion

I'm 64 years old. I'm on an airplane _right now_ vibe coding in C#. I have written code professoinally every day for over 40 years, and now I'm invigorated! It's the same thrill as when I wrote my first Fortran or IBM BAL programs back in 1979.

fortran77on CBP says it can't comply with refund order

Sure: https://www.irs.gov/businesses/small-businesses-self-employe...

fortran77on CBP says it can't comply with refund order

Poor people do this much more often than rich people.

fortran77on Tesla's Secret Weapon Is a Giant Metal Box

https://archive.ph/2v7lD

fortran77on Apple Uses Low Prices to Attack Rivals During Memory-Chip Crunch

Gift link: https://www.wsj.com/tech/apple-memory-chip-crunch-b0f6dc4a?s...

fortran77on MacBook Neo

Your Mac "fanboy" nonsense is tiring. The Surface 7 Laptop is an excellent machine, built well, and even gets a good iFixit rating (4 screws and you can replace the battery and M.2)

fortran77on American Snacking Habits Are Transforming the Restaurant Industry

https://archive.ph/Z73b3

fortran77on The United States and Israel have launched a major attack on Iran

I really hope our Government seeks out all these terrorists and Iran boosters on Hacker News who work in high tech. It’s a supply chain risk and none of them should be working.

fortran77on The United States and Israel have launched a major attack on Iran

The headline says "US and Israel". Why are you all focusing on Israel?

fortran77on 80386 Protection

> These features made possible Windows 3.0, OS/2, and early Linux.

And also--before Linux--SCO Xenix and then SCO Unix. It was finally possible to run a real Unix on a desktop or home PC. A real game changer. I paid big $$$ (for me at the time) to get SCO Xenix for my 386 so I could have my own Unix system.

fortran77on Two insider cases we've recently closed

It was a Mr. Beast staffer who was insider-trading on the second case. See: https://thehill.com/business/5756511-mrbeast-editor-fined-in...

fortran77on Will vibe coding end like the maker movement?

The "Maker" movement and "vibe coding" have changed the way I do things. I 3D print several things a month, and now I make PC boards with KiCad, etc. It's an incremental change, but a change nonetheless

fortran77on Gladys West, Who Got Belated Credit for Helping Create GPS, Dies at 95

Gift Link: https://www.wsj.com/arts-culture/books/gladys-west-dies-at-9...

fortran77on Nearby Glasses

I don’t want to be attacked by some vigilante for using speech to text glasses.

fortran77on Never buy a .online domain

Never use a “free” domain is a better rule. Even if there were no technical or administrative issues, nobody trusts them.

fortran77on What the U.S. Government's UFO Deep Dive Might Reveal to Americans

Gift link: https://www.wsj.com/politics/national-security/what-trumps-u...

fortran77on Be wary of Bluesky

Bluesky has already turned evil. Even though nobody’s on it, I use Mastodon

fortran77on Amazon Is Now America's Biggest Company by Annual Revenue

Gift Link: https://www.wsj.com/business/retail/amazon-biggest-us-compan...

fortran77on Pentagon might ask contractors to certify they don't use Anthropic's Claude

Gift Link: https://www.wsj.com/politics/national-security/woke-ai-spat-...

fortran77on Show HN: I'm launching a LPFM radio station

one-way communication is prohibited (with a few exceptions):

https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D...

I'm not sure what's on the amateur radio exam these days, but when I got my Extra back in 1977 this was definitely covered.

fortran77on Show HN: I'm launching a LPFM radio station

You're not allowed to "broadcast" (with a few exceptions) or play music with an Amateur licence.

fortran77on Can my SPARC server host a website?

This is what websites ran on back in 2001! It doesn't seem like much of a stretch to host a website on one, especially one that resembles a 2001-era site.

fortran77on An AI agent published a hit piece on me – more things have happened

It's very disappointing to learn that ArsTechnical now uses AI slop to crank out its articles with no vetting or fact checking.