this post was submitted on 22 Nov 2025
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Simple. Sounds are vibrations. The grooves make the needle vibrate. Those vibrations are amplified.
How does it seem like multiple sounds come through at the same time though? Say drums and vocals and a guitar, all at once. How does one groove equate to all of that?
That part still kinda mystifies me. I understand that it's a single waveform and you can just add together all the different waveforms of each instrument but it still blows my mind. Kinda like I sort of understand magnets but it still seems like magic.
With vinyl records it's pretty cool how it can do right and left channels. For the right channel the needle vibrates diagonally in one direction in the groove and the left channel vibrates diagonally in the other direction.