Author Topic: MQA  (Read 72349 times)

Offline malsound

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Offline AndrewC

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Re: Meridian MQA
« Reply #16 on: February 14, 2016, 13:06 »
http://www.computeraudiophile.com/content/681-my-first-24-hours-mqa/

Thanks for that!

Quote
“Edit 1: I just received a quote from Alan Silverman, Mastering Engineer on the Judy Collins track When I Go:
...
More specifically about the track When I go Alan said, "I’ve just compared the MQA playback with my original 88.2k 24-bit master and find the MQA to be mystifyingly more satisfying, and not by just a subtle shade. Listening to Willie and Judy, their voices sound much more real, at the same time, they have a textural filigree and detail of tone that I am not hearing in the original master! The same holds for the banjo and the subtle electric guitar in the right channel. I am delighted and extremely enthusiastic about the MQA process.”

“Better” than the original digital master?! :o… Hmmm….
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Offline Doggie Howser

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Re: Meridian MQA
« Reply #17 on: February 14, 2016, 16:50 »
Thanks for that!

“Better” than the original digital master?! :o… Hmmm….

Might be because MQA also includes a reconstructing filter which may be better than the master with a not so good filter?
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Offline AndrewC

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Re: Meridian MQA
« Reply #18 on: February 15, 2016, 00:27 »
Might be because MQA also includes a reconstructing filter which may be better than the master with a not so good filter?

I suspect you’re spot on  :)

Assuming this guy is listening via the same Meridian hardware to both tracks, that would suggest Meridian’s MQA Apodizing filters are more advanced than their normal Apodizing filter which they’ve been refining since ’04.
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Offline malsound

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Re: Meridian MQA
« Reply #19 on: February 17, 2016, 20:37 »
<a href="http://www.youtube.com/v/as_6OqDZVDs&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/as_6OqDZVDs&fs=1</a>

Offline petetherock

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Re: Meridian MQA
« Reply #20 on: April 11, 2016, 21:47 »
Been reading a fair bit about this:
http://www.theabsolutesound.com/articles/beyond-high-resolution/


http://www.whathifi.com/advice/mqa-audio-what-it-how-can-you-get-it

Quote
MQA in Practice
Before getting into the technical aspects of MQA, let’s review the basics. Master Quality Authenticated is an innovative and sophisticated new method of encoding digital audio that simultaneously improves fidelity and lowers the bit rate. It’s a suite of technologies that addresses the limitations of conventional digital audio by rethinking the entire chain, from acoustic source to playback device. It was developed by Meridian Audio co-founder Bob Stuart and longtime collaborator Peter Craven of Algol Applications.


In practice, MQA is delivered to listeners as a conventional lossless file, such as FLAC or Apple Lossless at 44kHz or 48kHz at 24 bits. If you play the file though a DAC without an MQA decoder, you’ll hear better-than-CD sound quality. If you play the file through a DAC with MQA decoding, you’ll hear the sound in the studio’s original bit rate, which could be anything from 44.1kHz to 384kHz (or higher), provided that your DAC can handle the studio’s sample frequency. This single-file hierarchical aspect of MQA has important implications for the technology’s adoption by record companies and content distributors.


The decoder can be implemented in many ways—partly integrated into a DAC chip, or as a bit of software in a phone, for examples. Every decoder will indicate to the listener when an MQA file is playing. Here’s where the “Authenticated” part of Master Quality Authenticated comes in; the MQA light or icon assures that what the listener is hearing on playback is exactly what the engineers heard in the studio. How does this happen? MQA ties the studio’s analog-to-digital converter and the listener’s digital-to-analog converter into what is effectively a single system. In addition, MQA’s rich metadata carries information about the particular analog-to-digital converter and encapsulation used to make the recording or transfer so that the decoder can play it back correctly. And if the decoder knows what DAC it’s driving, it can also optimize its sound. This is why MQA can claim to authenticate the studio experience for the listener.


As of this writing, more than fifty companies—from major players to niche high-end firms—plan to support MQA with compatible playback devices. Meridian has already launched its first MQA-capable DAC, the $299 Explorer2. The lossless streaming service Tidal is behind MQA in a big way; it will begin streaming MQA files in Q2 of this year. MQA allows Tidal to give its customers real high-resolution streams in a format that fits Tidal’s existing distribution infrastructure. In an e-mail exchange, Pål Bråtelund, Strategic Partnership Manager at Tidal, said: “At first, I thought the last thing the industry needed was another codec. But then Bob [Stuart] played some recordings I knew extremely well, and I instantly understood that MQA may be what makes people talk about great recordings and great music rather than about ‘hi-res.’”

For Tidal, and also for the world’s record companies, MQA solves the big problem of multiple inventories for different playback applications. A single MQA file works for every listener on every device. This backward compatibility and single inventory are powerful incentives for record companies and content distributors to adopt MQA—quite apart from the improved sound.



Anyone into this?
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Offline AndrewC

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Re: Meridian MQA
« Reply #21 on: April 11, 2016, 21:56 »
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Offline CASH

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Re: Meridian MQA
« Reply #22 on: April 11, 2016, 22:33 »
wow! so my pioneer DAP can do that???
it say's MQA!! Yippee!!!
but 1st things 1st....
I need to find a way to import my CD's n SACD's into it... hahahaha!!!
I LIKE EM, MEATY, THICK AND ROUND!!!!
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Offline petetherock

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Re: Meridian MQA
« Reply #23 on: April 14, 2016, 13:24 »
wow! so my pioneer DAP can do that???
it say's MQA!! Yippee!!!
but 1st things 1st....
I need to find a way to import my CD's n SACD's into it... hahahaha!!!
Here bro, an MQA update for your player:
http://www.soundandvision.com/content/mqa-update-now-available-pioneer-and-onkyo-portable-music-players#ylfyU0A6k8O1UkqC.97
Please post instead of sending a pm, so more can learn.

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Offline CASH

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Re: Meridian MQA
« Reply #24 on: April 14, 2016, 15:46 »
Thks bro.
But sadly now I am oveseas n didnt bring it along with me, as I have nothing stored on it!
 ;D
Once I am back, I will update it n wait for some dsd's to load into it.
Quite a few bros are sharing files with me.
Only thing is that a few of the bros r overseas too!
 ;D
I LIKE EM, MEATY, THICK AND ROUND!!!!
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Offline malsound

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Offline AndrewC

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Re: Meridian MQA
« Reply #26 on: April 18, 2016, 06:18 »
http://www.computeraudiophile.com/content/694-comprehensive-q-mqa-s-bob-stuart/

Thanks for that!

Not sure how many of you read this whole piece…. Holy smokes! :o (and not in a good way).

As far as I can tell, there are no parallels anywhere for MQA’s level of complexity in information delivery. That alone tells me MQA, at least in its full form, is doomed to failure.

I also don't like the completely proprietary nature of the MQA chain. IMHO, only a fool would voluntarily want to be locked into such a system. No wonder MQA is trying to claim the end result is "better than the original”; no one would even give them the time of day if it only “matches” lossless high-res at lower transmission bit rates.

Bob & team are very smart cookies, but this just really smells bad. ::)
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Offline AndrewC

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Re: Meridian MQA
« Reply #27 on: April 29, 2016, 19:20 »
Read the latest May/June’16 issue of The Absolute Sound; Robert Harley is so over-the-top and gushing on MQA, it’s well past absurd..  And not a single word mentioned on the totally proprietary single-vendor locked-in nature of the technology ::).  He’s destroying his reputation and credibility on this IMHO.
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Offline crazysurfer

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Re: Meridian MQA
« Reply #28 on: April 29, 2016, 19:54 »
Read the latest May/June’16 issue of The Absolute Sound; Robert Harley is so over-the-top and gushing on MQA, it’s well past absurd..  And not a single word mentioned on the totally proprietary single-vendor locked-in nature of the technology ::).  He’s destroying his reputation and credibility on this IMHO.

Tat means the returns must b bery attractive for him to resort to such absurdity.

Offline MusicEar

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Re: Meridian MQA
« Reply #29 on: May 05, 2016, 22:48 »
Any proprietary single-vendor locked-in technology is doomed to fail. We don't need another codec which ended up paying loyalty. This extra cost is going to pass down to consumers and we ended paying more! MQA playback requires the knowledge of DAC chipset so it can 'talk' to and optimised 'de-blurring' and other parameters. At the moment MQA playback is hardware based; which means one has to purchase a 'MQA certified' DAC in order to decode MQA. If you already invested an expensive DAC, would you want to upgrade? How many MQA albums are out there available for purchase?

Un-decoded MQA can still be playback coz it is encapsulated in FLAC but do note, without MQA decoder, playback performance is worse than a 16-bit FLAC:
http://www.computeraudiophile.com/blogs/miska/some-analysis-and-comparison-mqa-encoded-flac-vs-normal-optimized-hires-flac-674/

There still un-answered question whether MQA is truly a mathematically lossless codec when compared to FLAC?
« Last Edit: May 05, 2016, 22:56 by MusicEar »
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