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Re: OK thanks for the responses, I get it...

"If I am reading you correctly, this means less information per cm of groove, but faster speed at the outer rings; more information per cm of groove at the ends but slower speed at the inner rings."

There is more potential to store high frequency information at the perimeter but their seems to be enough at the inside also. A line contact stylus has an advantage over a spherical stylus for playback of high frequencies in inner grooves as the contact patch is shorter along the groove, enabling it to trace modulations that are close together.

"Inherently compensated, as you say. The 'same amount' of information appears per second, regardless of the groove speed. Theoretically that is".

I was speaking about linear speed being inherently compensated.

"I guess the superiority of sound at the outer grooves has to do with them just being 'straighter', not with the stylus moving faster or picking up more info. per se."

If the stylus is aligned correctly, I don't believe that in practice the there is significant superiority of sound in the outer grooves.

"Still, a speed-compensating lathe and LP playback chain seems reasonable, if difficult to engineer. It would certainly make LP playback more 'perfect'. Say, 8rpm at the beginning and 16rpm at the end. This would of course make the available information less, on the whole. You could get one pop single per side maybe. It sure would sound right though."

It would enable you encode the modulations at a uniform density and thus fit more in but there would be a price in complexity and more opportunity for errors. The end result may well be worse in practice.

"Resolution vs. space to store it. Same dilemma with digital, of course."

In this case you would need to add complexity and its associated problems. I guess that makes it a "trilema".

David




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  • Re: OK thanks for the responses, I get it... - energyandair 02/25/0711:38:43 02/25/07 (0)


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