If the information is stored at some value of bits per cm… There’s less bitrate (bits per revolution) in the middle of the record vs the outer edges.
If the information is stored at some value of bits per cm… There’s less bitrate (bits per revolution) in the middle of the record vs the outer edges.
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. Like a second of the song could be measured in radians, with the centimeters on the arc getting smaller. But I don’t actually know if that’s how it works.
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…
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.
I’ll find a copy just to hear for myself, that’s neat
Its a killer album as well haha
Absolutely, I hope the reissue LP is a reasonable price we’ll see
They pressed a lot of them, shouldn’t be more than $20 even for an og
The angular velocity is always the same during recording and playback
So the arc speed increases as the radius decreases, both in cutting and reading.
Lines and angles and curves, too, I bet.