Originally Posted by mcnarus
Then there must be a lot of unreasonable people in the world!
No one's demanding that you do this.
I do. If the difference for the better is all imagined and they actually sound indistinguishable to other people - I will be wasting my money. So, I care.
Granted, this was an extremely crude test but I was sure that I would get at least 90% right. Instead, 50% which is equal to random responses.
Here is the methodology.
The website that sells these 24bit 192kHz songs has a choice of previews - listen and download. You can choose which format to listen to, from 320MP3 to 24bit 192kHz.
So, here is what we did. I chose the first album available in the highest resolution. I asked my son to write down number 1 through 10 vertically. Then play the same song 5 times in CD quality and 5 times in HD, in random order. Write down the actual format and the one I guessed while sitting a 10-15 feet back on a couch.
I did not see what format he played or what order he chose.
You saw the results.
Here is the setup.
My ASUS PC (RAM and CPU are irrelevant here) has an Nvidia audio card, top of the line a few years ago. But since this sound was bypassing it the sound card is irrelevant as well. The PC is connected via an HDMI cord to a Pioneer Elite VSX-53
AVR. It outputs to an Emotiva XPA-3
power amplifier and a Sunfire HRS-10
1,000W powered subwoofer. The AVR is connected to Polk LSi-9
left and right speakers. Center and surrounds are different, but they are beside the point.
Here is where this methodology is flawed (the remarkable results notwithstanding):
1) What came out from speakers was essentially what the website browser sent. I sincerely doubt that even though I clicked on 24bit 192kHz preview, their server actually sent this quality signal. I monitored network card input and it was a few kbps for both CD and 24bit 192kHz, a far cry from 77mbps I calculated for the 10 seconds preview if it was of correct resolution. So, when you buy, you probably get HD quality, but not when you preview, which is exactly what we did.
2) The song was the worst possible choice - Kuniko Cantus. Although recorded in high quality the entire piece is a 800Hz -1000Hz tone of percussions (vibraphone and crotales) that has no dynamics and never reaches anything that would shine in 24bit 192kHz. I should have chosen some jazz with a rich and bright sound and vocals, not this sort of music which is as dynamic as a test tone. Of course, it sounds terrific as an art piece.
I think these two aspects render the test flawed, but not invalid.
Here is what I need to do.
1) Buy CD and HD versions of a different dynamic and rich song.
2) Convert to .DTSHD, have my son name 5 copies of each sort differently (10 copies of the same song, 5 HD and 5 CD) and document which track is in which format without me knowing it.
3) Repeat the test in Pioneer Elite BD player this time instead of a browser.
Then it will be much more clear, I think. So far I have doubts.
Regardless of the results - thanks for your suggestions. It has been fun! Edited by grigorianvlad - 10/20/13 at 12:09am