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maep commented on Show HN: I built an AI that turns any book into a text adventure game   kathaaverse.com/... · Posted by u/rcrKnight
maep · a month ago
Neat, but it has problems following in-universe rules, i.e. fantasy novels.
maep commented on Raspberry Pi RP2350 Now Available for Purchase, Stacked Memory Variant Coming   phoronix.com/news/Raspber... · Posted by u/rbanffy
declan_roberts · 6 months ago
I've struggled to find a place for the RP2040 and Pico dev boards. ESP32 is just so convenient, cheap, and powerful.
maep · 6 months ago
It's cheap and beginner friendly and very easy to learn. There is an overwhelming amount of ESP32 boards, variants and software which is daunting when you're just getting into embedded development.
maep commented on Hard disk fraud: long runtimes on new Seagate hard disks   heise.de/en/news/Hard-dis... · Posted by u/namanyayg
maep · 7 months ago
That must be the bigest scandal since Watergate-gate.
maep commented on Linux as co-operative Windows process (2017)   colinux.org/... · Posted by u/begoon
maep · 7 months ago
I used this back in the Vista times and it worked very well. Very similar to how people use WSL these days.
maep commented on C stdlib isn't threadsafe and even safe Rust didn't save us   edgedb.com/blog/c-stdlib-... · Posted by u/msully4321
forrestthewoods · 8 months ago
Mutable global state is evil. Friends don’t let friends use mutable global state.

I hate envvars. It’s “the Linux way”. I avoid them like the plague. A++ strong recommend.

libc is terrible. The world needs to move on.

maep · 8 months ago
> Mutable global state is evil. Friends don’t let friends use mutable global state.

Throw away your CPU and RAM then.

maep commented on Listen to what gets lost when an MP3 is made (2015)   vox.com/2015/3/4/8147377/... · Posted by u/teleforce
kiririn · 10 months ago
Maybe not fundamentally flawed but audio ABX testing is focused towards short term memory and opinion (especially in unskilled subjects) than I would like. I don't think there is any right answer to audio blind tests.

I'll trust actual validated limits of human perception such as 16/48 audio, 1~3dE colour, etc. And techniques used in video encoding like psnr, ssim, etc are also pretty well grounded in science. Also SINAD

But anything involving a human blindly comparing audio is into audiophile pseudoscience territory, no matter how large a cohort of people or how it is executed

maep · 10 months ago
I can assure you that audio codec testing is a through science. Tools such as PSNR, PEAQ or POLQA all have limitations and cannot fully replace a human listener. Those familiar with the topic are often vocal critics of audiophile bullshit.

No, this is nowhere near pseudoscience, psychoacoustics is an established field of science.

maep commented on Listen to what gets lost when an MP3 is made (2015)   vox.com/2015/3/4/8147377/... · Posted by u/teleforce
pimeys · 10 months ago
I've found 128 kbps opus to be the best quality to stream my music when I'm not home. It is very fast to encode on the fly, and outside the house I mostly listen to music with either Bluetooth headphones or sometimes in a car, so playing something like flac would be a waste of bandwidth.

Maybe I'm old, but I do not hear a difference between 128 kbps opus and flac. I mainly use flac because it is an excellent archival format and you can encode it to different formats easily.

maep · 10 months ago
Yea same with me. Unless you have a perfect setup this is good enough. Though if you want to do a little experiment, try Fatboy Slim's Kalifornia, the beginning is notorious for destroying transform based codecs.
maep commented on Listen to what gets lost when an MP3 is made (2015)   vox.com/2015/3/4/8147377/... · Posted by u/teleforce
kiririn · 10 months ago
I think these kind of blind listening tests are fundamentally flawed. For example in the graphics realm (games, video encoding, colour science, etc) all it takes is a momentary black screen between two comparison images to make it vastly more difficult to detect differences. Likewise side by side is also more difficult than swapping between two images instantly. Audio makes it impossible to do an instant swap, at best you’re getting the equivalent of a side-by-side comparison
maep · 10 months ago
If anything those tests make it easier to find subtle differences, which is good if transparency is the goal. I don't think that makes them fundamentally flawed. They are used throughout the industry, making results comparable.

Of course there are other ITU tests that work without hidden references, looping or even A/B comparison. They require a much bigger listener pool, are more expensive and take longer, thus used less often during development.

maep commented on Listen to what gets lost when an MP3 is made (2015)   vox.com/2015/3/4/8147377/... · Posted by u/teleforce
cladopa · 10 months ago
There is a trick there. A sound can mask another sound. You will not be able to tell the difference with both sounds playing at the same time, but if you subtract them you can hear it because there is no masking.

I always loved to test the ears of my "Audiophile" friends. They will tell you how different MP3s are. You make a bet they can not differentiate them in 20 trials better than chance. I won with most people but some professional musicians that can identify little differences.

maep · 10 months ago
I spent half my professional career doing listening tests (MUSHRA and P.800), specifically on test items like Tom's diner. 128 kbps mp3 ist fairly easy to pick out, especially if you can compare it to the original. Double the bitrate and it's a real challenge.

Modern codes like opus are much more efficient. At high bitrates they are fully transparent and anybody who claims to be able to hear a difference is full of shit. Put them in a controlled setting and they fail every time.

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KarmaCake day77September 23, 2021View Original