RE: [SurroundSound] Quadraphonic software decoders

Many  high sampling rate recordings appear to be up-sampled or at a higher sampling rate than originally recorded. My own experiments indicate that some up-samples (note: some) can sound better, but I don't profess to know why.

 

With some recordings I don't think we are getting a true master or a true up-sample; as I think they  could be using, for example, vintage digital multi-track, outputting mix-down in analogue; then converting back to digital.

 

I feel that some of the Hi-Res Madonna HDtracks are this way - as it is well documented:http://www.soundonsound.com/sos/sep07/articles/classictracks_0907.htm) that the "Like A Virgin" album was recorded on a Sony 3324 digital tape recorder with a Sony F1 for the two track ( I know you should get a similar result by a sample/rate conversion but where do the out-of- band signals come from without adding something?)

 

If you Google the Hoffman forums the threads appear to imply that the HDtracks master was from the analogue master -  so that's how you get to a 24/192 master recording, without some form of sleight of hand,  - this was a DAD recording?

 

Anyway this thread reaches a consensus and that is that the 24/192's sound better to quite a few. Let's not talk psychology here as these guys are studio wiz's and should know  better. And at that point I stop before I start another great debate.

 

Anyway a great free tool can be found here to analyse and see this visually: http://www.sonicvisualiser.org/

 

This tool Is developed by the University of London QMC. So it is for academic use but it doesn't half quickly show you a number of things that you normally need a professional tool for.

 

From: surroundsound@googlegroups.com [mailto:surroundsound@googlegroups.com]
Sent: 11 December 2014 21:54
To: surroundsound@googlegroups.com
Subject: Re: [SurroundSound] Quadraphonic software decoders

 

Well, just because it says it is doesn't mean it is. A couple of weeks ago i received proof that a major record company upsampled a title from 48k to 96k just to please those who won't buy it if it doesn't say 24/96.

 

So what did that upsampling do to the quality? It wasn't as pure as the 48k original, but as long as people think they are getting it then i guess it keeps them happy.

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I know ! I only see 99% in 24/96.............. ;-)

 

2014-12-11 22:39 GMT+01:00 'Richard Ford' via SurroundSound <surroundsound@googlegroups.com>:

 

Just because it was a DVD-A doesn't mean the contents has to be 24/96. It can be whatever.

 

 

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Because it was a DVDA.........

 

2014-12-11 21:34 GMT+01:00 'Richard Ford' via SurroundSound <surroundsound@googlegroups.com>:

 

Please do explain why you would expect to see 24/96 considering the source was a CD?

 

 

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Well, I did compare the f-2 and p version and........ there is hardly any difference !

I ripped from both DVDA's the first two tracks and compared them in Soundforge > It's very hard to discover any difference.

There was some in the RMS and Peak levels, but that difference was so small, not worth to mention....

I did however found it a bit strange that both are recorded on DVDA in 16/44.1 ..... I expected 24/96 ;-)

Anyway, when listening on my HTS I also couldn't hear a difference.......

 

grtz,

 

EoH

Op woensdag 10 december 2014 16:17:37 UTC+1 schreef EoH:

 

 

Hi,

 

What's the difference between  DS58f-2 and DS58p (both John Keating's Space Experience) ?

 

grtz,

 

EoH

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