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ARSCLIST  November 2012

ARSCLIST November 2012

Subject:

Re: Interesting history of DGG-Polydor-Polygram-Berliner Studios-SACD-etc

From:

Clark Johnsen <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Fri, 23 Nov 2012 16:26:04 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (160 lines)

Thank you -- my responses are below.

On Fri, Nov 23, 2012 at 2:45 PM, Goran Finnberg <[log in to unmask]> wrote:

> Clark Johnsen:
>
> > That must lead one to question the reproducing system.
>
> "No difference whatsoever" is an exceedingly rare event.
>
 Perhaps I misunderstood the message: "The experts and parts of the
Hi-Fi/High End scene are at cross purposes over the new recording format
DSD, on which the Super Audio CD is based, and possible advantages of this
format in comparison to PCM, as it is used for CD and (in its
high-resolution variety) for DVD-Audio."  I took it that the "no difference
whatsoever" line referred to CD PCM, not to the (very uncommon) high-rate
DVD-A.

>
>
> http://old.hfm-detmold.de/eti/projekte/diplomarbeiten/dsdvspcm/aes_paper_608
> 6.pdf<http://old.hfm-detmold.de/eti/projekte/diplomarbeiten/dsdvspcm/aes_paper_6086.pdf>
>
This paper in fact employed an even higher rate PCM: 176/24. Also it does
not specify what speaker models were used or anything about their
crossovers. Perhaps you can inform us?

clark

>
> Watch out for any line breaks above. The whole link needs to by used!
>
> Or use:
>
> http://tinyurl.com/pateu4
>
> http://www.audioasylum.com/forums/dvda/messages/7851.html
>
> DVD-Audiobahn
>
> DSD vs. PCM tests at Universal's Emil Berliner Studios
> 80.184.248.69
> ------------------------------------------------------------------------
> [ Follow Ups ] [ Post Followup ] [ Thread:  Display  Email  Next ] [
> DVD-Audiobahn ]
> ------------------------------------------------------------------------
>
>
> Posted by Mathias Myka on October 01, 2003 at 05:12:11
>
>
> The September, 2003 edition of "Production Partner", a German magazine for
> studio technology (http://www.production-partner.de), has a fairly
> interesting interview with Rainer Maillard, head of the recording service
> department of Emil Berliner Studios (http://www.emil-berliner-studios.com
> ).
> They do most classical recordings for Universal's Deutsche Grammophon
> label,
> and also seem to be owned by Deutsche Grammophon.
>
> For two of the most recent SACD productions of DG, the studio did a
> parallel
> recording in DSD and PCM (96/24) technology, and made extensive comparisons
> between the two digital audio formats. One of these recordings is the SACD
> production of Gustav Mahler's 2nd symphony, played by the Vienna
> Philharmonic Orchestra, directed by Gilbert Kaplan.
> If you have this SACD, you may have noticed that be booklet says: recorded
> in PCM 96 kHz/24 bit.
>
> As I find this interview quite interesting, I have tried to translate those
> parts relevant to the never-ending SACD- vs. DVD-Audio/PCM discussion. Here
> we go:
>
> **********
> [About audible differences]
> "When comparing the parallel recordings [i.e. DSD vs. PCM], several things
> need to be considered. One example: when I compared the main microphone
> [tracks] of the Mahler Surround Production in DSD and PCM, there was a
> notable difference. Later I discovered that the sensitivity of the D/A
> converters in conjunction with the monitoring unit had a certain tolerance,
> which was about 0.3 to 0.6 dB. When playing back through five speakers,
> this
> was audible. After adjusting the levels of all channels, the difference was
> practically inaudible."
>
> [About blind tests]
> "We did A/B/X blind tests, which again and again without mercy showed the
> difference between reality and imagination. To most of our colleagues and
> guests it was impossible to notice a difference and thus make a judgment. I
> think that's a positive result. It shows that DSD is positioned on a very
> high quality level."
>
> [About parameters for high end recordings]
> "The question is not about format. To produce a high end audio recording,
> completely different parameters have to be considered. How do I select
> musicians, recording venue, instruments, positioning, microphones, cables,
> converters, mixing desk, outboard equipment etc.? How do I combine these
> elements? If I move a microphone just one inch from it's location, the
> differences will be greater [than between DSD and PCM]. I could hire a
> different piano tuner, then it will sound different again, or change the
> room temperature. To me that's fascinating."
>
> [About DSD's impulse reproduction]
> "Because DSD uses 64x oversamling as compared to the CD, measurement
> results
> for impulse reproduction are very good. But such a measurement signal will
> hardly ever be encountered in practice. "
>
> [About DSD artefacts]
> "A one bit data stream by itself has a s/n ratio of only 6 dB. This noise
> energy, by means of noise shaping, can be moved into a frequency range
> where
> it no longer interferes. As a result, you get good s/n ratios of about 120
> dB in the human hearing range. We took a closer look at the increasing
> noise
> above 20 kHz, and we are not sure if this noise can be seen as an artefact
> or effect, possibly even as a positive sound effect. [...] One very
> revealing experiment was playing back a 30 kHz sine wave with varispeed at
> one tenth of the original speed. By using this trick, you can hear the
> artefacts at 3 kHz, which otherwise wouldn't be audible to us. Here, a
> difference between DSD and PCM showed itself, and this also can be
> measured."
>
> [About archive media]
> "With regard to our archive, the answer [derived from these experiments] is
> clear: on a master recording, there is no place for noise, as it cannot be
> removed later. So we have decided to use high resolution PCM with 96 or 192
> kHz sampling rate as our archive medium."
>
> **********
>
>
> Mathias
>
> Rainer Maillard was also interviewed in the English Pro Audio Magazine
> "Studio Sound" where he in a much expanded detailed interview how this
> comparision was done.
>
> You cannot fault what they did in any way......except personal "Theories"
> based in wishful thinking instead of facts.
>
>
> --
> Best regards,
>
> Goran Finnberg
> The Mastering Room AB
> Goteborg
> Sweden
>
> E-mail: [log in to unmask]
>
> Learn from the mistakes of others, you can never live long enough to
> make them all yourself.    -   John Luther
>
> (\__/)
> (='.'=)
> (")_(") Smurfen:RIP
>

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