John Atkinson: Yes, MQA IS Elegant...

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You want to know about elegance.  How about this?

 

Have an ADC which can convert an analog input to digital with 20 bit accuracy, flat response, and distortion so low as to be negligible and completely inaudible in any way shape or form.  

 

Send digital signal to a DAC that can convert input to analog with 20 bit accuracy, flat response, and distortion so low as to be negligible and completely inaudible in any way shape or form.  This second part elegantly being a direct mirror image of the first conversion.  Elegantly making the conversion disappear from the signal when all is said and done.  

 

Why it is as if the original signal has passed thru a very short wire directly unadulterated to you across space and time.  Just simple plumbing of the signal for real.   Robert Stuart even wrote a paper investigating and decided such a system is fully blameless at either 18 or 19 bit accuracy levels.  Less with good dither. 

 

Such a system is of course well done PCM.  It is simple, and unencumbered by gate keeper corporations.  We already have the real elegance.  MQA is like the ugly vile disgusting evil toad that looks into a mirror and sees some illusion of beauty and elegance.  Everyone else without the magic mirror looks and sees an ugly vile disgusting evil toad that is either delusional or trying to put one over on us.  In this case I think it is both.   So where are the journalists getting their magic mirrors?  I think they must have a small one in their wallets. 

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37 minutes ago, Shadders said:

Hi,

OK - is MQA Ltd stating that ADC's filters introduce ringing even though the energy at 80kHz to 96kHz (fs=192kHz) is zero ?

 

I assume the answer is that there is NO ringing in the recording.

Regards,

Shadders.

And other than a very few extended response microphones the energy left at 40 khz to 48 khz in 96 khz sampling is though not zero very low in level.  There isn't anything to do much of any ringing.  Plus at those frequencies we aren't hearing that.  At 96 khz and even more so at 192 khz sample rates the microphones have implemented an uncontrolled slow rolloff filter. 

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19 hours ago, mansr said:

I only used the word once.

That just shows how talented you have become since re-imagining yourself in troll form.  You are able to Troll us while only using a word once.  That is high level trolling.  

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5 hours ago, Ralf11 said:

What are the sharpest attacks ??

 

And what is the rise time for the sharpest part?

Here is one from a cymbal recorded at 176 khz with wide bandwidth microphones. 

It is like most cymbals.  After initially being struck there are a few cycles of building amplitude and then a slower decay afterwards (most of the decay is chopped off in the picture here).   You'll see it isn't all that steep a transient.  Nothing that rings or pushes the ability of PCM to follow.  I've posted this before after downsampling to 44khz and the waveform shape is hardly changed.  

 

The result makes sense.  You strike a cymbal in one location, the energy travels across the face of it to the edges, reflects, and takes a few trips to reach maximum resonance before dying away.  In the case of cymbals it dies away rather slowly. The picture in people's minds that the harsh loud cymbal sound is a hugely steep initial transient wavefront actually doesn't even make sense once you think about it. 

 

It is a fool's errand to keep looking here for the answer to digital sound or digital harshness or digital problems.  All this is old hat, and a myth that won't die.  PCM works, and is elegant while MQA is solving a non-existent problem while introducing other problems we don't need.  

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You can download the wav files for many cymbals recorded by J. E. Johnson at this page.

 

http://www.hometheaterhifi.com/images/stories/audio/cymbal-samples/cymbal-reviews-index.html

 

Here is a thread with some more info and FFT plots.

 

http://www.drummerworld.com/forums/showthread.php?t=66957

 

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5 minutes ago, blue2 said:

These could be used to create an excellent speaker test. I've always found a drum kit reveals any shortcomings. Any more test files to complete the set? It seems the original article was just about cymbals https://hometheaterhifi.com/editorial/musings-of-a-drummer/

Yes, just cymbals.