🧵 Untitled Thread
Anonymous at Sun, 17 Mar 2024 03:40:20 UTC No. 16082427
You guys are probably the best to ask this question, well definitely better than /mu/ anyway. So how exactly does a vinyl make sound through just a stylus and grooves? Is every single individual sould carved out so it's scraping the record at the exact right frequency? That can't be the case right? how could that have even been discovered, I don't get it. Especially with a vinyl playing records are so many different RPMs.
Anonymous at Sun, 17 Mar 2024 04:06:37 UTC No. 16082468
>>16082427
the grooves modify resistance in a wire which is translated into sound waves with a speaker. now you know. every analog device works the same way. you modify voltage in some part and then use an amplifier to turn the voltage into flashes on a screen and vibrations of speakers/magnets. it's not hard if you sit down and think about it. recording works the same way. you take a microphone and the air vibrations become voltage differences on a wire which get recorded into the grooves on the vinyl
Anonymous at Sun, 17 Mar 2024 04:18:44 UTC No. 16082503
>>16082468
>microphone
I think capacitance varies with microphones, not resistance
Anonymous at Sun, 17 Mar 2024 04:45:27 UTC No. 16082536
>>16082427
>Is every single individual sould carved out so it's scraping the record at the exact right frequency?
yep. You'd originally have a system where a diaphragm controls a needle to make scratches to record the record, and then another system where a needle controls a diaphragm to play the record. No fancy tech needed, you're just recording and playing back an analog signal.
>Especially with a vinyl playing records are so many different RPMs.
That doesn't make the problem much harder, since if you play it at the wrong rpm it'll just be sped up and higher pitched/slow down and lower pitched. If there's just a tiny difference between recording and playback speed, the difference will be too small to notice.
Anonymous at Sun, 17 Mar 2024 05:08:35 UTC No. 16082557
>>16082468
so CDs are using electricity instead of a needle?
Anonymous at Sun, 17 Mar 2024 05:09:52 UTC No. 16082558
>>16082557
they are using light to "scar" the CDs when burning them and reflected light to read the "scars"
Anonymous at Sun, 17 Mar 2024 05:10:55 UTC No. 16082559
>>16082557
>>16082558 Me
but in the digital domain with CDs, not analog. 0s and 1s.
Anonymous at Sun, 17 Mar 2024 05:11:39 UTC No. 16082560
>>16082557
CDs use a laser to make holes that represent 0s and 1s to be read by the computer as orders to modify voltage on the speakers.
Anonymous at Sun, 17 Mar 2024 05:23:14 UTC No. 16082568
>better not ask /mu/!
>mongoloid understanding of the world
Anonymous at Sun, 17 Mar 2024 08:49:42 UTC No. 16082709
>>16082468
They actually induce voltage in coils by vibrating a magnet around them.
Another common way is using piezo crystals.
>>16082503
There are many types.
Anonymous at Sun, 17 Mar 2024 11:37:02 UTC No. 16082907
>>16082427
there's a transductor at the other end of the needle, is it that hard to understand?
Anonymous at Sun, 17 Mar 2024 13:01:04 UTC No. 16082976
>>16082568
/mu/ is only good for talking about music (and even then that's pushing it) not really about hardware or instruments or anything technical.