Oh man.
12 year old me waiting for hours to rip mp3s from cds always wondered about this.
Like why isn’t it already compressed?
The answer is that storage was available but processing wasn’t. Amaze.
Comment on shrimp colour drama
captain_aggravated@sh.itjust.works 3 days ago
Reminds me a little of CD digital audio. The original Red Book audio standard hasn’t really been improved upon because it’s uncompressed audio which covers basically all of the range of human hearing within the capabilities of any speaker we could build. It’s uncompressed because in the early 80’s when the tech hit the market, it was completely unfeasible to include the CPU and RAM needed to decompress audio in real time.
Shrimp has more color receptors because he doesn’t have enough neurons to run trichromacy, so he sees in EGA.
null_dot@lemmy.dbzer0.com 3 days ago
T156@lemmy.world 3 days ago
Mp3 is already compressed, as is the MP2 CDs use.
If it wasn’t conpressed, you’d be looking at CDs per track, instead of tracks per CD.
deltapi@lemmy.world 3 days ago
What are you on about? CD-DA, aka audio CD, aka red book audio, is uncompressed 16-bit PCM @44100Hz. It is lossless.
MP3 (MPEG-1/2 Audio Layer III) is a lossy encoding standard commonly used for online audio distribution and steaming. MP2 usually refers to MPEG-1 Audio Layer 2, which was most commonly used in Digital Audio Broadcast.
Neither are used in ‘regular’ CD audio.
SaharaMaleikuhm@feddit.org 3 days ago
I’d like to subscribe to the format facts newsletter. Can you do VHS next?
captain_aggravated@sh.itjust.works 2 days ago
It is lossless.
I’m not sure that’s the right word for uncompressed digital audio, because it’s lossless compared to what? Presumably an analog recording or the original input signal? Because Shannon-Nyquist, with CD audio you can’t get anything higher than what? 16kHz out of it, but within that limitation you can reproduce any arbitrary waveform within a speaker’s ability to produce given the laws of physics regarding inductance and inertia.
MP3 does use a lossy compression, but you can maintain listenable quality while cramming about 10 times as much audio into a given space. You can get just over an hour of Red Book audio on a CD, and about 11 hours of mp3s, give or take. You might get lower audio bandwidth or various kinds of artifacts but it’ll still sound pretty good, it’s way more practical to store and transmit over the internet. We didn’t Napster no .wav files.
FLAC and similar formats use lossless compression, kind of like a .zip file. If you rip a CD to FLAC, and you were to then burn a CD from that FLAC, the data on the new CD would be identical to the old one. So you get as-perfect-as-we-can-do digital audio, but only 5 or 6 hours worth would fit on a CD. Someone somewhere on this earth has filled a compact disc with FLAC files, I’m sure.
humanspiral@lemmy.ca 3 days ago
Is moral of your story that adults having frequency detection limited to 16khz, with older adults lower, might still be able to detect music well enough?
gabereal@sopuli.xyz 3 days ago
love this. nice job :)
VGA vs EGA, from the game ‘Police Quest 3’
jballs@sh.itjust.works 3 days ago
I remember experiencing the EGA to VGA graphics evolution when I was growing up. I remember thinking the VGA almost seemed too real.
In my mind, this was a game that felt like it was pretend:
Image
But this felt entirely too real:
Image
WhiskyTangoFoxtrot@lemmy.world 2 days ago
Have you played The Crimson Diamond? EGA is back, baby!
jballs@sh.itjust.works 2 days ago
Oh man, I had completely forgotten about the old Laura Bow games! Might have to check this out!