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Comment on The information density on a vinyl can be higher earlier in the record than later...

themeatbridge@lemmy.world ⁨4⁩ ⁨days⁩ ago

I always assumed that the initial cutting of the record accounts for the variation in speed as the needle moves towards the center. If that’s the case, the information density would be relatively consisten, because the size of the bits of information would get smaller as the speed increases. But I don’t actually know if that’s how it works.

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Bane_Killgrind@lemmy.dbzer0.com ⁨4⁩ ⁨days⁩ ago
I checked, audio quality can degrade at the center, I guess since the needle can’t read fine enough details. Also probably why the label size is similar on full size records and singles…

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- bridgeenjoyer@sh.itjust.works ⁨4⁩ ⁨days⁩ ago
  Yep its called IGD or inner groove distortion , reason why old albums almost always had the quiet ballads at the end.
  
  Rush 2112 has real bad igd because it ends very loudly.
  
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  - Bane_Killgrind@lemmy.dbzer0.com ⁨4⁩ ⁨days⁩ ago
    I’ll find a copy just to hear for myself, that’s neat
    
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    bridgeenjoyer@sh.itjust.works ⁨4⁩ ⁨days⁩ ago
    Its a killer album as well haha
    
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Steve@startrek.website ⁨4⁩ ⁨days⁩ ago
The angular velocity is always the same during recording and playback

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- themeatbridge@lemmy.world ⁨4⁩ ⁨days⁩ ago
  So the arc speed increases as the radius decreases, both in cutting and reading.
  
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  - a_non_monotonic_function@lemmy.world ⁨3⁩ ⁨days⁩ ago
    Lines and angles and curves, too, I bet.
    
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