Thanks, Corey - all good points. My comments were strictly for DVD-Audio discs, with no video content. I agree the bit depth is more important that sampling rate.
Audio Engineer Emeritus
The Crane School of Music
SUNY at Potsdam, NY 13676
"Great art presupposes the alert mind of the educated listener."
"A true artist doesn't want to be admired, he wants to be believed."
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Corey Bailey
Sent: Saturday, December 09, 2017 2:48 AM
To: [log in to unmask]
Subject: Re: [ARSCLIST] Universal Mexico Decca Remasterings
We may have been talking apples & oranges. When I referred to some of the major studios re-purposing Std. Def audio for Blu-Ray, I was referring to movies & TV series. Basically, audio for picture. I know that the 24/48K standard hasn't changed, even for current titles so the audio for picture should be 24/48K. The DVD departments that I worked in did not produce any DVD-A or Blu-Ray audio only discs. BTW, the 24/48K standard was adopted by the industry after listening tests were conducted by the major studios that participated in the study. One interesting discovery was that a change in bit depth was more noticeable to the test subjects than an increase in sample rate. It's also worth noting that today's music score that is delivered to the dub stage has often been recorded at a higher sample rate. I'm guessing that the original music stem is what is used for today's audio only DVD's.
That's my story and I'm sticking to it! ;-)
Corey Bailey Audio Engineering
On 12/8/2017 3:04 PM, Gary A. Galo wrote:
> Hi Corey,
> The problem is that it specifically says, on the covers, that they're Pure Audio Blu-ray at 24-bit/192 kHz. Here's the link to the series on the Almaraz web site (they're the Mexican dealer that ships to the US):
> Scroll down to the 5th row to find the Blu-ray discs. Discs that follow the Pure Audio specifications must be PCM, so they will play on any Blu-ray player. Those discs may also contain Dolby or DTS programs, but the Pure Audio portion is high-res PCM. If there really isn't any high-res PCM program on these discs, then calling them Pure Audio 24/192 is false advertising. If transfer, restoration and editing is done at 192/24, and the finished product is converted to DTS HD at 48 kHz, a manufacturer can't call it Pure Audio Blu-ray. More info on the Pure Audio format can be found here:
> None of the color buttons, which Pure Audio uses to change formats, function on these discs, and the Audio format button on my Oppo remote controls only brings up "1/1 DTS HD" on my TV screen. The "1/1" means 1 of 1 - there are no other choices.
> I've emailed the Pure Audio folks about this to see what they have to say.
> Gary Galo
> Audio Engineer Emeritus
> The Crane School of Music
> SUNY at Potsdam, NY 13676
> "Great art presupposes the alert mind of the educated listener."
> Arnold Schoenberg
> "A true artist doesn't want to be admired, he wants to be believed."
> Igor Markevitch
> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:[log in to unmask]] On Behalf Of Corey Bailey
> Sent: Friday, December 08, 2017 5:13 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Universal Mexico Decca Remasterings
> Hi Gary,
> I'm not surprised. 48K/24Bit is the film industry standard. As one who edited and mastered DVDs for a few of the major film studios, I can tell you that while the video was generally remastered to a Hi-Def format, the audio (at least, for the couple of hundred feature film titles and TV shows that I worked on) was re-purposed from Std. Def DVD files. I would expect that DVD-A is no different, weather it is mastered with DTS encoding or Dolby AC3.
> Corey Bailey Audio Engineering
> On 12/8/2017 11:22 AM, Gary A. Galo wrote:
>> Does anyone know anything about the Decca Analog Golden Era recordings that are being issued by Universal Mexico? I just got the four Blu-ray discs of the Del Monaco operas. Despite the claim that these are PureAudio Blu-ray discs at 192 kHz/24-bit, the only program I can find on my Oppo UDP-205 or my wife's BDP-93 is DTS HD at 48 kHz/24-bit. Have you heard anything about these? I'm wondering if I am the only one who noticed. The reviewers in Fanfare all seem to have only the CD versions of these remasterings, not the Blu-rays.
>> It seems very strange that these are coming out of Mexico only. The booklets say that the actual tape-to digital transfers were done at Abbey Road Studios, which I also find strange. I thought all the Decca tapes were in Hanover.
>> Based on sampling these last night, I will say that even at 48 kHz, the sound is superb - better than anything Decca has issued here of this material. Strangely, I have found a lot of the Decca Originals remasterings to be very bright on top, including the Karajan Otello and the Solti Salome and Elektra. Regarding Salome and Elektra, the Blu-ray editions are just as bright as the two previous CD releases.
>> Gary Galo
>> Audio Engineer Emeritus
>> The Crane School of Music
>> SUNY at Potsdam, NY 13676
>> "Great art presupposes the alert mind of the educated listener."
>> Arnold Schoenberg
>> "A true artist doesn't want to be admired, he wants to be believed."
>> Igor Markevitch