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Cake day: August 9th, 2023

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  • it made no sense to me

    That’s all CAD software. You can’t just jump in and intuitively learn it by just doing it. It’s like trying to learn a programming language. You need a solid tutorial to explain the basics, at a minimum. Even with something simple like TinkerCAD.

    FreeCAD was probably the worst choice. Give TinkerCAD a try. I know the FOSS community will hate me for saying this, but I like Autodesk Fusion for a full featured CAD package. It has a very steep learning curve, like all CAD software, and you need to watch some videos first. You will make a ton of mistakes and do even simple things wrong at first, but once you get going, it’s great to use.





  • It’s not, I assure you. It uses psychoacoustic properties of audio to simulate actual surround sound. I’ve been using it in gaming for years. You can literally hear when an enemy is behind you vs in front of you, and anywhere in the 360° around you. You can easily pinpoint their location in your head.

    Pixel Buds Pro have this same kind of programming and you can enable it when watching surround sound content on your phone. You can even have it play regular audio but make it sound like it’s coming from the direction of the phone. When you turn your head, the audio follows the phone and it sounds like the audio is coming from the phone in 3D, not just panned L or R in stereo. (I haven’t played with this much, and I hope I’m not misremembering that last part which iPhone also has.)

    Here’s a computer generated example using these techniques. Headphones are required! Listen to this with ordinary headphones with no additional spatial processing enabled.

    To my ears, it sounds like the 3 channels of the source audio are little spheres rotating around the top of my head like a halo. The music sounds distinctly different when it’s behind me or in front of me. The distance away from my head is not far, though.

    https://youtu.be/LpMsqFc7-Z4

    A technique like this will never be perfect, and this is not the best example I’ve heard. The best would be using my Logitech gaming headset in a game. It’s not perfect because everyone’s ears are shaped differently, and your brain learns the microtonal differences which your specific ears cause as sound echo’s around your outer ear and ear canal. This might be why I hear these music examples as above my head while others might hear it revolve directly around their ears or perhaps a little lower than their ears.

    I enjoy how ignorant people who don’t understand a technology dismiss is with snark and get upvoted by others. Wait, what’s the opposite of enjoy?

    It’s like how religious fundies with little education make fun of our best scientific theories with arguments that boil down to “I’m ignorant, so I don’t believe this”. Congratulations on being on the same level.











  • You’re saying that because games couldn’t be patched, they had better gameplay? That makes no sense at all.

    Lots of games had crap gameplay. There are more junk vintage games than good ones. The gameplay was simple because it had to be. The consoles didn’t have the power to do more. Chips were expensive. So they had to invent simple gameplay that could fit in 4k of ROM. If dirt simple gameplay is your thing, great. The Atari joystick had one stinking button for crying out loud.

    You think Space Invaders has better gameplay than Sky Force Reloaded? Or Strider has better gameplay than Hollow Knight? You’re insane.

    E.T. for the 2600 had gameplay so bad it crashed the entire video game industry.

    Double Dragon on NES had a jump that was impossible to make forcing the company to make a new cart and give refunds.




  • I can’t hear anything above 20 kHz, and neither can most people. CD audio is passed through a 20 kHz lowpass filter. It is then sampled at 44 kHz. Due to the Nyquist Shannon Spamling Theorum, when sound is digitally sampled at just above twice the rate of the source audio, converting it back to analog perfectly reproduces the original waveform. And I do mean perfectly. The exact same waveform. (The extra 4 kHz is to prevent artifacts in frequencies very close to 20 kHz.)

    Therefore CD audio is perfect unless you think you can hear above 20 kHz. (Spoiler: you can’t) There are a few good YouTube videos on this topic, and the best ones are very mathy.

    Is there something I’m missing? Do I need to educate myself some more?