In sighted, level unmatched and none quick switching comparison? Not surprising.
If A had not been trashed by my ssystem it might be different. I used audio setting like it came from factory.
So I went in and changed the sample rate from 48 to max 24/192 and several other other things which look like it was for gamers maybe.
relistened and "A" sound very good on piano and I do know piano. Didnt listen to B and C. Just know A is good now.
So, I am saving all settings and ready for the next blind comparison.
Still the variability in responses is interesting. Even if hardware/software related or hearing related.
BTW -- 88 a standard? There was every sampling rate from CD to 24/192 and no 88 listed to choose. In next tests pls use 96 or other real "standard" so i can be sure all is good.
Any 20KHz messing with is now beyond my ears. so no point in trying to decide on something like filter changes up there for me at this age now. Just design for flat GD and low ripple and knowing that makes me OK with showing off my sound system to others with younger ears.
24/88 sounds pretty good. Like I said before, I could live with 24/96 or more. Do we have any young ears in the crowd to tell differences at treble end?
Can we do test with just change sample rates?
Thx-RNMarsh
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guess so. That and some other weird settings. But I never use my desk top computer for sound before. Some u-tube etc.
Normally I use the BenchMark DAC 3.
I am happy I could still hear differences... good or bad.
THx-RNMarsh
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My laptop won't do 88k or 176k either, attacks on B and C sounds more edgy on 44k, 48k and 96k, higher res slightly better. Difficult to hear any difference at 192k.
The backpedal is real. And, well, the way Hans set up the files, all 3 files should have been equally screwed up with what you're portending.
You're free to set up your own tests to your satisfaction. Nothing here was definitive, but makes hints and allegations as to a direction (as has been been to the embarrassment of so many before).
Hans did a very good job, I wish I can listen to them at native res. Resampling introduces new unknown to the mix.
No Apple here, am running Linux on my machine which I used together with my Sennheiser headphones.
With regards to the differences between the sample I did find A to stand out from the other two, while as you said B and C was more or less like flipping a coin.
I had also a look at the spectral content of the 3 samples in Audacity and there's something odd with B and C above 22 kHz, C also have some noise that increases with the frequency, I'm not sure if that's only in my machine, see attached picture.
Attachments
Relax Bob, people do this all the time. They create a blind test that throws serious listeners off. IF we did not hear well enough, we would hear NO difference between the files. Bill, you know better.
That would probably be the content that Hans added back, supposedly to hide which file was which, was referred to as ‘Angel dust’ ......I suppose the question would be why that seems preferable?
It’s not worrying me at all John, I trust what I heard.
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Just to be sure I closed down Audacity and reopened it and opening only one sample at a time, the artifacts above 22k for B and C are still there, and C has the increasing noise by frequency above 22k.
By looking at sample B and C and the mirage-like content above 22k, it resemble the peaks above 22k visible in sample A, but in reverse, did Hans play a little prank with us? 🙂
btw I would have also liked to see a 16/88 sample as an alternative to 24/44.
By looking at sample B and C and the mirage-like content above 22k, it resemble the peaks above 22k visible in sample A, but in reverse, did Hans play a little prank with us? 🙂
btw I would have also liked to see a 16/88 sample as an alternative to 24/44.
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Hans, I hope you don't mind...
B and C have additional non musical, or, to be more precise, not related to original composition content above LPF cut-off frequency. Some of it is even in reverse. 😀
C have additional noise shaped dither ot top of it.
P.S. I can post a pictures if anyone wants to see them.
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Well, that sounds nice. But have you looked at the price and availability of mch downloads? Have a look at e-classical.com and nativdsd.com. Mch downloads tend to be pricey.
Then there is the mch dac. I don't follow dac world much, but not many mch dacs, AFAIK.
Nonetheless, all the best.
There is a also a time aspect w.r.t. the content Hans added to the signals in the A and B files.
Referring to the spectrogram at the bottom of the analysis pane of the B file, the added content above 20kHz is most prominent at times between 0:40 and 1:00, and again between 1:23 and 1:54, i.e. exactly within the intervals where there is almost no musical content below 20kHz.
I don't know whether Hans did it so on purpose, but I find it a rather cute idea for testing the audibility of the content above 20kHz just when there is no "interfering" musical content below 20kHz.
Regards,
Braca
Referring to the spectrogram at the bottom of the analysis pane of the B file, the added content above 20kHz is most prominent at times between 0:40 and 1:00, and again between 1:23 and 1:54, i.e. exactly within the intervals where there is almost no musical content below 20kHz.
I don't know whether Hans did it so on purpose, but I find it a rather cute idea for testing the audibility of the content above 20kHz just when there is no "interfering" musical content below 20kHz.
Regards,
Braca
Attachments
I proposed a test along these lines somewhere here a few years ago.
Pass 2 White noise sources through high pass brick wall filter with Fs set to say 22 kHz
Sum them
Feed through amp to headphones
What do you hear?
Pass 2 White noise sources through high pass brick wall filter with Fs set to say 22 kHz
Sum them
Feed through amp to headphones
What do you hear?
If anybody still wants to audition the .Wav files without the masking HF noise etc, here they are.
Hans
Dropbox - DiyAudio2 - Simplify your life
Hans
Dropbox - DiyAudio2 - Simplify your life
I should have mentioned. It'll be a while before I can afford a bigger room 🙂. Things may have changed by then. DAC wise things are much easier with mch downloads than with discs. Swings and roundabouts 🙂