Jump to content
IGNORED

MQA is Vaporware


Recommended Posts

5 hours ago, FredericV said:

In a nutshell, if an MQA output stream is only 16 bits (MQA CD, 16 bit MQA, truncated 24 bit to 16 bit files), origami is NOT possible, as the crypto DRM part to do the unfold is not being stored, as it is normally the bottom 8 bits of a 24 bit MQA file.

This is what I already figured out by doing my experiments, and now Bob confirms this.

Note that 24 bit MQA does not mean actual 24 bit audio data, as it allocates several bits to do origami, and it also has a bit with a metadata stream stored, so MQA licensed products can recognize it's MQA.

 

With just the LSB being used for MQA encoding (cannot contain hi-res - just used to set the blue light, plus gets the MQA renderer to upsample as necessary up to the bogus indicated original sample rate & apply the indicated MQA filter), the implication is that MQA-CD is actually 15 bits (44.1kHz only), rather than the 13 bits sometimes mentioned.

We will win because our NHS is the beating heart of this country. It is the best of this country. It is unconquerable. It is powered by love.

-- Boris Johnson

 

We are far more united and have far more in common with each other than things that divide us.

-- Jo Cox

Link to post
Share on other sites
2 hours ago, Cebolla said:

 

With just the LSB being used for MQA encoding (cannot contain hi-res - just used to set the blue light, plus gets the MQA renderer to upsample as necessary up to the bogus indicated original sample rate & apply the indicated MQA filter), the implication is that MQA-CD is actually 15 bits (44.1kHz only), rather than the 13 bits sometimes mentioned.

 

According to the patent diagram, the 0-24kHz is mapped to the 13 MSB bits .  The next 3 bits are then used to trigger the blue light and selection of the MQA filter, etc.*  That would make MQA-CD 13 bits -- not just 13 bits but 13 bit playback with a leaky filter.  [For 24 bit MQA, HF -- 24-48kHz -- seems to be packed into the 4 LSB bits (bit 21 to bit 24).]

 

*Further, more than 1 bit is needed to indicate authentication, filter selection and, possibly, sample rate.  Also, note that the 8 LSB bits in a 24 bit MQA file are not involved in the MQA authentication process -- the file will still authenticate when those bits are dropped.

 

 

MQA is dead!

Link to post
Share on other sites
15 minutes ago, lucretius said:

 

According to the patent diagram, the 0-24kHz is mapped to the 13 MSB bits .  The next 3 bits are then used to trigger the blue light and selection of the MQA filter, etc.*  That would make MQA-CD 13 bits -- not just 13 bits but 13 bit playback with a leaky filter.  [For 24 bit MQA, HF -- 24-48kHz -- seems to be packed into the 4 LSB bits (bit 21 to bit 24).]

 

*Further, more than 1 bit is needed to indicate, authentication, filter selection and, possibly, sample rate.

 

 

Would this be the concept to hide all the upsamping they were pushing on CD, with these being just straight 16bit they don’t need any of that craziness so wouldn’t 15bit be a truer figure even so it’s still reducing the audio capability regardless 

Link to post
Share on other sites
2 hours ago, R1200CL said:

Actually it’s unfolded to 88.2/24 bit. Tested with Tracy Chapman album on Roon.

 

Again, please go back and figure out how MQA works. You keep participating here without understanding the basics. You are welcome to participate, but it would be more useful if you didn't require the rest of us to continually correct basic lack of knowldedge.

TC was recorded in 1987 and labelled DDD, so not in hi-res. AFAIK, recorded digitally for CD and never around in a hi-res remaster: So either your setup is set to upsample without your knowledge, or MQA is using a non "authentic" hi-res master (that can only be an upsample) that they can then unfold to fake 24/88 (b/c there is no true 24.88 MQA).

Main listening (small home office):

Main setup: Surge protector +_iFi  AC iPurifiers >Isol-8 Mini sub Axis Power Conditioning+Isolation>QuietPC Low Noise Server>Roon (Audiolense DRC)>Stack Audio Link II>Kii Control>Kii Three >GIK Room Treatments.

Secondary Listening: Server with Audiolense RC>RPi4 or analog>Matrix Element i Streamer/DAC (XLR)+Schiit Freya>Kii Three .

Bedroom: SBTouch to Cambridge Soundworks Desktop Setup.
Living Room/Kitchen: RPi 3B+ running RoPieee to a pair of Morel Hogtalare. 

All absolute statements about audio are false :)

Link to post
Share on other sites
26 minutes ago, firedog said:

TC was recorded in 1987 and labelled DDD, so not in hi-res. AFAIK, recorded digitally for CD and never around in a hi-res remaster: So either your setup is set to upsample without your knowledge, or MQA is using a non "authentic" hi-res master (that can only be an upsample) that they can then unfold to fake 24/88 (b/c there is no true 24.88 MQA).

I was not expecting it to unfold as it’s original 16 bit. 
So explain this:

 

5D88D2C4-C987-4206-93A3-A60CE71FBCC6.jpeg

Link to post
Share on other sites
44 minutes ago, firedog said:

Again, please go back and figure out how MQA works.

http://www.audiomisc.co.uk/MQA/origami/ThereAndBack.html
 

http://www.audiomisc.co.uk/MQA/bits/Stacking.html

 

http://www.audiomisc.co.uk/MQA/cool/bitfreezing.html
 

http://www.audiomisc.co.uk/MQA/intoshape/NoiseShapingHighRez.html

 

Let me know if you find any errors or misleading information in these articles. 

 

Link to post
Share on other sites
35 minutes ago, Confused said:

The thing is, you can try doing a few internet searches re MQA, and the vast majority of results are positive.

 

OK - You can deliberately look for the bad stuff, say by doing a search on "is MQA bad", and you'll find some links for content critical of MQA, it is out there.  But do a general search on say MQA sound quality, and the vast majority of links will be to content that is incredibly positive about MQA.  Fake news, mis-selling, poor journalism just repeating press release content, call it what you will, but there is an awful lot of it out there.

 

Not everyone is fanatical enough to fully check the facts, and I think the end result is that a lot of people are being thoroughly, but perhaps understandably , mislead.

It is how marketing and the internet work now.

When a product is put out there marketing companies use AI computer robots to generate comments, reviews,and influential "reports".

If you understand how search engine algorithms work you can flood the search engine with specific search requests which prompt the search engine to respond in a certain way. A factor in search engine algorithms is the number of search requests.

You might also see search engines in a darker light.

Boycott Warner

Boycott Tidal

Boycott Roon

Link to post
Share on other sites
15 minutes ago, R1200CL said:

 

Is Tidal popular in Norway?

Boycott Warner

Boycott Tidal

Boycott Roon

Link to post
Share on other sites
43 minutes ago, R1200CL said:

I was not expecting it to unfold as it’s original 16 bit. 
So explain this:

 

5D88D2C4-C987-4206-93A3-A60CE71FBCC6.jpeg

My guess is there's some non audio code in the MQA file where it's mistakenly labeled 24/88. You can't take a file that's starts out as  16/44 and unfold it to high res. You can only get there if you upsample at some point in the process. 

It can't be authenticated as 44.1 (which we know it is) and also "decoded" to 88.2. Maybe there's an error in the data in the file telling Roon to "core decode" it. But that is "unfolding", so it makes no sense. I think it's just some kind of labelling error. 

Main listening (small home office):

Main setup: Surge protector +_iFi  AC iPurifiers >Isol-8 Mini sub Axis Power Conditioning+Isolation>QuietPC Low Noise Server>Roon (Audiolense DRC)>Stack Audio Link II>Kii Control>Kii Three >GIK Room Treatments.

Secondary Listening: Server with Audiolense RC>RPi4 or analog>Matrix Element i Streamer/DAC (XLR)+Schiit Freya>Kii Three .

Bedroom: SBTouch to Cambridge Soundworks Desktop Setup.
Living Room/Kitchen: RPi 3B+ running RoPieee to a pair of Morel Hogtalare. 

All absolute statements about audio are false :)

Link to post
Share on other sites
18 minutes ago, R1200CL said:

Better idea: let us know when you've read the material and are sure you understand it.

Main listening (small home office):

Main setup: Surge protector +_iFi  AC iPurifiers >Isol-8 Mini sub Axis Power Conditioning+Isolation>QuietPC Low Noise Server>Roon (Audiolense DRC)>Stack Audio Link II>Kii Control>Kii Three >GIK Room Treatments.

Secondary Listening: Server with Audiolense RC>RPi4 or analog>Matrix Element i Streamer/DAC (XLR)+Schiit Freya>Kii Three .

Bedroom: SBTouch to Cambridge Soundworks Desktop Setup.
Living Room/Kitchen: RPi 3B+ running RoPieee to a pair of Morel Hogtalare. 

All absolute statements about audio are false :)

Link to post
Share on other sites

Just saying (from the link):

 

Streaming 16b MQA

Recently, as we have rolled out many more MQA files sourced from 44.1 kHz 16b masters – where we expect the MQA file to be 16b – this FLAC mishandling occasionally happened while adding seek tables and some listeners have been confused about the bit-depth indication on their players.

However, in this case, whether the streamed FLAC is 16b or 24b, the audio is identical  as we know from the MQA indicator.

 

This is BS because it is not about confusion between 24b and 16b, It is about RBCD 16/44.1 vs MQA 16/44.1, the latteer replacing the former.

Bob, you are sh*tting on us.

Talking about mishandling - you deserve some spanking.

 

Bob, Bob, Bob, didn't you notice ?

 

Lush^3-e      Lush^2      Blaxius^2      Ethernet^2     HDMI^2     XLR^2

XXHighEnd (developer)

Phasure NOS1 24/768 Async USB DAC (manufacturer)

Phasure Mach III Audio PC with Linear PSU (manufacturer)

Orelino & Orelo MKII Speakers (designer/supplier)

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×
×
  • Create New...