SkoomaDentist
The Greater Finnish Empire
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User ID: 84
SkoomaDentist
The Greater Finnish Empire
7hr ago
Nonlinear acoustics is a thing but the amplitudes are orders of magnitude higher and cause more or less immediate hearing damage.
Speaker elements OTOH are well known to have by far the highest distortion of any of the common audio components (right after the ear itself but that gets deep into psychoacoustics). Once that confounding factor is eliminated, tests haven’t managed to demonstrate any instances of someone hearing beyond 20 kHz. It’s not for lack of trying either as plenty of manufacturers would love to have a peer reviewed paper to point at as a sales argument for their 96 or 192 kHz sampling rate capable equipment.
SkoomaDentist
The Greater Finnish Empire
8hr ago
By comparison, the noise floor in the best analog sources is at -70, and that's only if you're using filters; it's more like -32 db naturally.
This is not correct. The best analog recording media have signal to noise ratio around 70 dB without noise reduction (ie. dynamic filtering). With noise reduction > 90 dB SNR is possible but you get artifacts as a tradeoff that depend on the noise reduction method.
Analog sources can quite trivially have > 100 dB SNR. A simple example would be a high quality oscillator that's switched on and off.
An unusually dynamic recording is going to have around 20db of dynamic range, a more typical recording will be in the 14db range, and most contemporary loudness war recordings will have less than 10 db.
This is a bit of a simplification in that it only considers the variation in short term loudness. You need to additionally consider the difference between the short term loudness and quietest audible element at that moment (somewhat less than 70 dB). Not coincidentally this 70 dB combined with 20 dB loudness variation is close to the CD limit of 93 dB (3 dB lower than the theoretical 96 dB due to dithering).
24 / 32 bits is of course extremely useful for recording and processing audio as you don't need to optimize the recording levels nearly as closely (and risk clipping) and avoid excessive noise accumulation over various processing passes. There are even recorders that combined multiple converters internally to record the entire dynamic range possible with room temperature electronics so that the resulting SNR is always optimal without ever clipping until the operating voltage limits of the recorder itself are exceeded.
SkoomaDentist
The Greater Finnish Empire
9hr ago
Meanwhile there is no scientific evidence that humans can hear 192 kHz.
More specifically, there has not been a single remotely credible test that would even hint at finding anyone who could hear past 20 kHz. Every time that has been claimed, the claimed ability has completely disappeared when intermodulation distortion in the playback path was removed by using a separate amplifier and speaker element for the > 20 kHz part.
SkoomaDentist
The Greater Finnish Empire
1d ago
even an advice of just three bits ("move left rook") per move
That's quite a bit more than three bits. Two for direction and three or four for the piece.
A bigger problem is making that information reliably detectable by the player without alerting anyone else. Remember, the player can't run advanced signal processing algorithms to dig out hidden information from below the noisefloor and is presumably surrounded by "hostile" actors who are on the lookout for any such information. The hostile actors don't even need to be able to decode the information, just detect that there may be such information transmitted.
SkoomaDentist
The Greater Finnish Empire
3d ago
I'll have you know that I haven't been a self-righteous sixteen-year-old in many years
By which you (and I) of course mean that you're these days a self-righteous much older person.
SkoomaDentist
The Greater Finnish Empire
3d ago
Who the hell is pushing for higher standards and more rigor at universities?
Based on this thread, roughly two people on this entire site while two dozen think an attempt at doing that was grounds for dismissal. I”d liike to say I’m shocked but this isn’t the exactly the first or even the twentieth time people here have argued in simular vein.
SkoomaDentist
The Greater Finnish Empire
3d ago
Mankind was not meant to know some things…
SkoomaDentist
The Greater Finnish Empire
3d ago
For me quite significantly because aux cords were never a thing in regular car radios here. Given that radio has played pure shit for the last 20+ years, being able to conveniently play my own playlists is a rather significant feature.
SkoomaDentist
The Greater Finnish Empire
4d ago
actual advanced math I'd tend to just bounce off the notation and terminology, which there's so much of.
I'm pretty sure I have some sort of math "symbol blindness". If you wrote equations using regular letters and abbreviations, I'd say "Yeah, that's tricky but not too horrible" while using greek letters and math symbols would immediately result in "WTF is this shit I can't even...".
It's all fun and games until you get to the physics for physicists and the are no numbers.
Hell, by the time I passed the last mandatory EE math course in university, the only numbers in the formulae were single digits. We were allowed to use regular non-graphical calculators but were (correctly) told that we weren't going to need them for anything in the exam.
SkoomaDentist
The Greater Finnish Empire
4d ago
kindness to one person is often unkindness to another
Not necessarily.
Some comments above I wrote some suggested accommodations in school where one is being allowed to return assignments late but reducing significant amount of points for that. How is that unkind to people who return theirs in time? They get better grade while in turn the late returner doesn't get an automatic fail.
Kindness to one person may be unkindness to another but this isn't remotely axiomatic like it's treated here.
at whose feet should we lay the blame for this state of affairs? The administrators? Legislators? Assorted departments of education?
The ones who mandate that schools provide such obvious performance improving ”accommodations” in the first place. I don’t really see how actually meaningful true accommodations would significantly improve performance for regular students.
Say someone is dyslexic and requires accommodation? No problem, don’t grade anyone on irrelevant typos (outside core writing courses in elementary / high school)
Another person has adhd with faulty executive function and requires extra time to return an assignment? Again no problem, they get to return it a day or two late but with a third of the max points subtracted (or similar significant but not immediately ruinous amount).
A person can’t handle doing the exam with distractions around them? They get to do it in a sparse room under TA surveillance.
Someone's "not a good test taker" and needs to redo? Again, simple. Everyone gets say one redo attempt and anyone needing more than that has to return an extra 20 solved problems before being allowed to retake. The catch: said problems are hard level and simply being able to solve them at all essentially guarantees that you've studied enough to pass with a good grade (this is how I passed Circuit Theory 2 with all the Laplace stuff and transmission lines).
The point is that those accommodations only help against actual problems but don’t provide any meaningful benefit for someone who doesn’t truly require them (and in some cases outright reduce their grade / require significant extra work).
SkoomaDentist
The Greater Finnish Empire
4d ago
That sounds a bit like what they call "university of applied sciences" here which are basically souped up community colleges and have the reputation to go with that.
SkoomaDentist
The Greater Finnish Empire
4d ago
You should have known better than to go to engineering school. Stick with CS
Alas, that wouldn't have helped what with requiring more formal math and logic theory in turn. I already only passed the one required logic course by bribing my ex-gf to do the mandatory course project for me.
<whatever you do, DON'T TAKE DIFFERENTIAL EQUATIO<NS, and you can get by with much less effort.
Ah, see... Things didn't (and still don't) work like that over here. The basic math courses and physics courses were largely the same and the difference was more complex analysis for EE vs more formal stuff for CE/CS and that isn't even getting into the horrors of discrete mathematics. So I did the only thing a reasonable person could do and passed most of the maths courses with the minimum passing grade (mostly on second try) and put it all behind me by burning the course book the next summer (Adams' Calculus, gods I hated that book). Pro tip: Make sure you have enough lighter fluid because those books are really hard to burn.
SkoomaDentist
The Greater Finnish Empire
4d ago
Yeah, university is a complete joke. Effort required was very low even prior to modern AI.
Just what sorts of universities did you people attend?
Because I can say that having to study things like calculus on the complex plane, Laplace transforms (I still shudder from thinking of the nearly 10 page long calculations for just a single problem), electromagnetic field theory or multirate filterbanks certainly didn’t feel ”very low effort” to me!
she is better artist than vast majority on Spotify.
This but for real. The vast majority of modern music is such utter crap that such a middle of the road fairly cliche AI generated track can easily accomplish that.
In the video comments someone said "The AI created a song that has influences of The Cranberries, Enya, The Corrs and The Cardigans, and a dash of Whigfield." and my first thought was that even The Corrs had more personality. There is however one artist that immediately comes to mind as a comparison: Hillsong United with Oceans (Where feet may fall). It's fitting in an ironic way that IMO the closest "real" artist is a rather cringe intentionally crafted, overpolished and smoothed worship band straight out of a Christian megachurch.
SkoomaDentist
The Greater Finnish Empire
6d ago
Everyone is missing the forest for the trees
Are they? CNN is quoting Trump saying land strikes will begin soon. That’s Iraq 2.0 right there in the major news outlets.
SkoomaDentist
The Greater Finnish Empire
9d ago
it could also mean that he forgot he'd signed it
In case people think this is only something the elderly do, I was just notified that a fairly popular concept in a subfield I’ve worked in was in fact published by my professor and myself, not by my successor. And sure enough, the paper I remember writing with my prof does have a section just on that concept. Thing is, I’ve spent the last 15 years absolutely convinced I had nothing to do with the concept and it was only my successor and professor who were involved. And I’m in my fourties.
SkoomaDentist
The Greater Finnish Empire
9d ago
Ah, the same factor which made the first two Transformers films watchable!
SkoomaDentist
The Greater Finnish Empire
11d ago
I always thought that the anti corruption services were EU puppets and US, so not sure what and why is behind it, and why exactly in this moment.
If they're US puppets, this is pretty much something you'd expect given [people in US administration have been explicitly advising Putin aides how to get the most favorable response from Trump.
Are people here familiar with git frontends?
Having again lost a day's work to git deciding to delete files I hadn't committed yet (nor will I ever commit to the master), I'm now looking for a git frontend that doesn't completely suck balls. Is there anything that fits the following tenets:
- My local files are sacred. Under no circumstances can they be deleted without some way to undo it. No exceptions. If the files in the repo and my working copy differ, show it to me so I can choose what to do on a per-file / directory basis.
- The repo has only a single origin. I don't care if Linus needs twenty thousand different repos to pull and push things from. I use one. The tool shall treat every branch as always having that as origin.
- A submodule should only mean the short text file that contains the SHA hash. The contents of submodule directories should be completely ignored when pulling, merging, committing or pushing. Yes, I know the repo's submodule refers to a different set of files than the ones in my working copy. That is intentional.
- I don't want to ever have to see or care about staged files. My files are either being worked on or have been committed. There is no such thing as a staged file.
- No operation should leave things halfway, something staged or any ><!¤#"¤#% characters in files. It either completes succesfully or leaves the working copy as it was before. Not some quantum Schrödinger's halfway state.
It gets really laborous having to have the actual working copy, the one git wants to see and the authorative origin/master and manually trying to manage them without git completely fucking up my working copy just because a branch pointer was changed somewhere.
SkoomaDentist
The Greater Finnish Empire
21d ago
It's incredible how common this is on this particular site.
I'm fairly convinced much of the "never give out any details about your personal life"-advice some people here give is mostly related to this pathology instead of any actual concern about doxxing and canceling.
SkoomaDentist
The Greater Finnish Empire
22d ago
Yup. I already knew it was going to be Amadan before even clicking the link. Most mod work is trivial janitorial duties and some mods should really be forbidden from doing any other type.
SkoomaDentist
The Greater Finnish Empire
23d ago
Curious why folks jump through so many hoops to avoid either ads or paying for a subscription.
Because the hoops are minor (install noscript and ublock origin which you have to do anyway) and the platform has been enshittified to hell even without the ads.
It's baffling why people on this site try to use UK as example of Europe anything when it comes to legislation given the entire legal system has very different traditions.
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