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 Posted:   May 18, 2018 - 4:14 PM   
 By:   Sean Nethery   (Member)

NPR's blog "the record" has a cool test to see if you can hear the difference between low, mid and uncompressed digital music files. Worth taking. I only got one right - the Mozart one - and I work in radio for heaven's sake!

https://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality

 
 Posted:   May 18, 2018 - 10:46 PM   
 By:   Lewis&Clark   (Member)

Hm. I got two right, Katy Perry and Murray Perahia. The latter one being the easiest since the music is closest to what I listen all the time: orchestral soundtracks. I didn't know on what details to listen with the other ones, so I consider the Perry sample a lucky pick.

 
 
 Posted:   May 18, 2018 - 11:40 PM   
 By:   .   (Member)

Can't take this very seriously. It would only be worthwhile if everyone was listening to the same samples through the same equipment, at the exact same volume, in a controlled setting.
Depending on equipment, one listener might not detect any differences when listening to speakers, but might hear clear differences through headphones. Another listener with different equipment might hear the opposite.
I also note sloppiness from the author when (in the linked Results section) he describes the Perahia/Mozart as being a digital recording, when it is actually an analog recording from almost 40 years ago.

 
 
 Posted:   May 19, 2018 - 1:09 AM   
 By:   Marcato   (Member)

Well enough to tell that the remastered US release of “the Good, the bad, and the ugly” had noise reduction applied and therrfor did NOT Sound clear in the top compared to original release

 
 Posted:   May 19, 2018 - 6:26 AM   
 By:   LordDalek   (Member)

Personally I think its easier to hear audio quality BEFORE it gets converted to a downloadable file. Stuff like FLAC and WAV is all hot air if the original album sounded awful to begin with.

 
 Posted:   May 19, 2018 - 6:36 AM   
 By:   LordDalek   (Member)


I also note sloppiness from the author when (in the linked Results section) he describes the Perahia/Mozart as being a digital recording, when it is actually an analog recording from almost 40 years ago.


Uhh no, Perrahia's recordings of Mozart's Piano Concerti 17 and 18 are both digital (his first IIRC) as evidenced by the rather loud banner proclaiming as such on the original vinyl issue and this blurb contained within the cd liner notes:



The only ones sloppy were the faceless CBS employees whose jobs it were to slap the Digitally Mastered Analog Recordings legend on the bulk of Columbia's cd releases in the mid-1980s. I can think of more than a few cases where that "Digitally Mastered Analog Recordings" bug at the bottom of the case was innacurate.

 
 Posted:   May 19, 2018 - 9:47 AM   
 By:   Sean Nethery   (Member)

Hm. I got two right, Katy Perry and Murray Perahia. The latter one being the easiest since the music is closest to what I listen all the time: orchestral soundtracks. I didn't know on what details to listen with the other ones, so I consider the Perry sample a lucky pick.

Yeah, I can almost always tell piano quality; low bit rate makes piano sound warbly - not, I think, the technical term. wink

Um, Basil, the author makes the very same point about how one listens making a big difference. Let's be clear: on the Internet, where this test is, you know, posted, and where most people do their listening or get their music, the vast majority are going to listen on computer speakers, earbuds or a mobile speaker. So yes, in the world of the interwebs, this is a legitimate test.

 
 
 Posted:   May 19, 2018 - 10:41 AM   
 By:   John Mullin   (Member)

I think there's a real placebo effect with audio quality. Sometimes I'll listen to a "remastered" edition of something and think that I'm hearing all these new details, but then I'll go back and listen to the original master and discover that all that stuff was totally in there before. I think because I knew it was "remastered," I was paying extra attention.

Same with bit depth. I think anywhere between 320kbps and lossless sounds great, but I can't distinguish much within that range. I can identify super low quality, of course, and the only way I can really pick out 24 bit audio is if I drive around listening to it in my car, and then my ears start to hurt later!

 
 
 Posted:   May 19, 2018 - 12:49 PM   
 By:   Bob DiMucci   (Member)

Out of the six, I picked two of each of the three types--exactly what one would expect from a random draw. So I conclude that I really can't tell anything about audio quality with my aged ears (if I ever could). I buy CDs for the physical product, not for any presumed audio superiority.

 
 Posted:   May 19, 2018 - 1:34 PM   
 By:   Adventures of Jarre Jarre   (Member)

It took multiple listens on my rinkydink boombox, but I got all of them right except Coldplay. Can't help but to think that, other than the equipment of the time, some tracks are meant to sound distorted in terms of aesthetics. It still seems like 128kbps should sound far worse than it does here. Somebody's lying. I'm just going to blame......














.............. Tom Ford.


PS: His pause was so pregnant, it had twins!

 
 Posted:   May 20, 2018 - 11:06 AM   
 By:   Sean Nethery   (Member)

johnmullin, I like your post a lot. Did you take the test? If so, how many did you get right?

 
 Posted:   May 21, 2018 - 3:55 PM   
 By:   Nicolai P. Zwar   (Member)

I have not tried it but I doubt one can hear the differences via laptop speakers. :-)

(Though I'm not gonna hook up my PC now to my stereo system just to try this out.)


PS: Wow, I just did sample it and got 4/6 on my (rather cheapo) built in laptop speakers, though maybe I just got lucky, I was just guessing at times.
I did find it most obvious in the Mozart recording. Some of the other music was already heavily processed, so how the hell is one to determine which one is the emost natural sounding? These tests should be made with music performed on natural acoustic instruments and voices.

 
 Posted:   May 21, 2018 - 4:54 PM   
 By:   Sean Nethery   (Member)

Some of the other music was already heavily processed, so how the hell is one to determine which one is the emost natural sounding? These tests should be made with music performed on natural acoustic instruments and voices.

This test isn't about which version is the most natural sounding. Only whether one can tell the difference between low, mid and lossless quality, using well known artists and songs, and listening through a computer or smartphone. This is how the vast majority of people listen to music these days.

The test is valid on its own terms, even if it doesn't meet audiophile standards. It's not about audiophilia. wink

 
 
 Posted:   May 21, 2018 - 5:02 PM   
 By:   bagby   (Member)

Some of the other music was already heavily processed, so how the hell is one to determine which one is the emost natural sounding? These tests should be made with music performed on natural acoustic instruments and voices.

This test isn't about which version is the most natural sounding. Only whether one can tell the difference between low, mid and lossless quality, using well known artists and songs, and listening through a computer or smartphone. This is how the vast majority of people listen to music these days.

The test is valid on its own terms, even if it doesn't meet audiophile standards. It's not about audiophilia. wink


6 for 6 for me. Admittedly most of the *ahem* 'music' in these examples the fidelity doesn't matter all that much.

 
 Posted:   May 21, 2018 - 5:11 PM   
 By:   Sean Nethery   (Member)

Good job, Bagby. I admire your ears though I don't envy them. I enjoy not being too worried about audio quality as long as the baseline is good enough. (The Mozart, for example, is just NOT at 128.)

 
 Posted:   May 22, 2018 - 4:56 AM   
 By:   makro   (Member)

WTF? I can't hear any difference for any of the samples. Is that a trick? I'm listening via headphones (AKG, not the cheapest ones) using the laptop. Fair enough, I never fancied myself a quality afficionado but apparently my hearing is absolutely rubbish. So either one of you could please explain to me what it is that I need to listen to to hear the differences or I can go back to grabbing my soundtracks in 128kbps because apparently it doesn't make a difference for me.

Thx.

 
 Posted:   May 22, 2018 - 5:00 AM   
 By:   Nicolai P. Zwar   (Member)


This test isn't about which version is the most natural sounding. Only whether one can tell the difference between low, mid and lossless quality, using well known artists and songs, and listening through a computer or smartphone. This is how the vast majority of people listen to music these days.


I've done some blind testing before, and the more familliar I am with the music, the more I can hear the differences. Though I find that music with natural acoustic instruments is best for such tests. I mean, if one is mostly listening via ear buds to pop music on the go, I'm sure a decent mp3 will do just fine. No need for a test there. :-)

 
 Posted:   May 22, 2018 - 5:49 AM   
 By:   MusicMad   (Member)

Only 1 from 6 - Suzanne Vega - with two others as the 320kbps choices. I couldn't listen to the Jay Z track for more than a second or two so took a guess and was completely wrong.

So, 1 out of 5 correct and 50:50 of the others which is disappointing but then I've never thought my Dell PC with speakers (via a sub-woofer) is of high quality. I normally listen to music via hi-fi separates (good~high quality) and hear the difference when I upgrade a component - e.g. even a proprietary interconnect (analogue) between the DAC and the pre-amp made a positive difference when I used this to replace the standard interconnect supplied with the equipment.

I'm unlikely ever to own any of these tracks (maybe the Mozart - I already have a 1956 recording of Leonard Bernstein ~ Columbia S.O.) so can't be sure ... but I think I could identify the WAV versions if played thereon ...

... if not, I've wasted a lot of money! smile

Mitch

 
 
 Posted:   May 22, 2018 - 7:00 AM   
 By:   observant observer   (Member)

4 out of 6 for me using speaker's built into PC base (Dell)...giveaway for me was the opening seconds of the tracks, slight warble I found...

 
 Posted:   May 22, 2018 - 7:37 AM   
 By:   ryanpaquet   (Member)

I got 2 out of 6 but for most ended up picked 320kbps. I find that it's quite difficult for anyone to hear the difference of 320 vs. wav.

The ones I was able to nail was the classical piece, and the Neil Young piece that also has some instrumentation. That's what I'm used to listening to.

If anyone's interested - there's another test worth taking, to see how much of an intelligent listener you are. I scored 100% on this one.

http://www.cbc.ca/radio/docproject/i-ve-been-telling-this-story-wrong-for-19-years-1.4498255/how-intelligent-a-listener-are-you-take-the-test-1.4498720

 
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