Digitally Remastered Vinyl

Posted by: steve barnard on 19 June 2003

I was looking at some reissued Miles Davis vinyl in a record shop the other day and noticed some were reportedly analogue remastered while others digitally remastered. Would a digital remastering of a presumably original analogue recording destroy the analogue benefit? Has anyone done an A/B comparison or care to share an opinion? Why would a record company do this if they were presumably selling to an “analogue” market with a vinyl pressing?
Posted on: 19 June 2003 by ejl
quote:
Would a digital remastering of a presumably original analogue recording destroy the analogue benefit?


I'm no expert on this stuff, but I would guess that it comes down to how the remaster is done, and in particular whether the recording is digitally remastered at a higher resolution and sampling rate (like 24-bit/96kHz), and then used to make the analogue master for the LP BEFORE being compressed down to the cd standard (16-bit/44kHz), or if instead the compressed cd-redbook digital recording comes first and the remastering (and hence LP master) are made after the compression. If the former, then it seems entirely possible that the LP version could come from a informationally richer (= higher resolution) digital recording than what ultimately winds up on the compressed cd version. If the latter, then it indeed seems unlikely that the LP would offer any real benefit.

This is entirely hypothetical; maybe someone here knows whether higher resolution digital recordings are or can be used in mastering LPs as compared with cds?

I can say that I have many '80's classical LPs that were digitally recorded using, I'm fairly certain, the cd standard of 16bit/44kHz, and they sound pretty dreadful; harsh and grainy in the same way that a lot of 80's cds sound, but with surface noise added in. The vinyl adds perhaps a little warmth to these; from the added distortion, probably, or maybe from the lack of jitter invovlved with cd playback. But they're still not very pleasing recordings.
Posted on: 20 June 2003 by Rob Doorack
The "dirty secret" of the vinyl world is that the analog signal on many mastering lathes is run through a digital delay line - suffering through A/D and D/A conversion - before it goes to the cutter head. The computer that controls groove spacing has to preview the signal before it's cut so the gap between grooves can be adjusted to accomodate changes in groove modulation. In the "old days" mastering tape decks had a preview head before the head feeding the cutter. Now, many mastering decks just have one head. The signal is sent directly to the computer and simultaneously through a DDL to the cutting head.
Posted on: 21 June 2003 by jpk73
In the "old days" mastering tape decks had a preview head before the head feeding the cutter.

Why not add a preview head plus ADC to a "these-days"-mastering-deck and feed the cutter with the original analog signal?!?!?!?!?!?!

- Jun
Posted on: 23 June 2003 by Rob Doorack
quote:
Why not add a preview head plus ADC to a "these-days"-mastering-deck and feed the cutter with the original analog signal


That certainly can be done but it costs more. As I recall someone once posted on Analogue Addicts that Neumann mastering gear has only come with digital delay lines for some years.