How Well can you Hear Audio Quality? a quiz!
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fable2




Posts: 6051

PostPosted: Wed, 3rd Jun 2015 08:57    Post subject: How Well can you Hear Audio Quality? a quiz!
http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality

thought it was kinda interesting Razz

i could tell the difference between 128kbps and others but not between 320kbps and WAV but thats probably due to my cheap headset.
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MinderMast




Posts: 6172

PostPosted: Wed, 3rd Jun 2015 10:15    Post subject:
Interesting... Will have to check it out when I get home.
To be fair, the difference between some high quality MP3 and a wav or FLAC file is not that obvious even with higher end hardware. The kind of music you listen to is likely to play a role in how apparent the difference will be as well.

Even if you notice the subtle difference there is also a matter of personal preference - some people actually like MP3s more because they can sound sort of softer while FLAC can sound a bit too "clean".

Majority of people probably wouldn't care either way Smile
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Kaltern




Posts: 5859
Location: Lockerbie, Scotland
PostPosted: Wed, 3rd Jun 2015 12:21    Post subject:
Hahah some of the utterly pompous comments in that test Laughing

"FWIW, I got the first two wrong, then I figured out what to listen for and got the next four right. And my ears still feel like crap for the experience."

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red_avatar




Posts: 4567

PostPosted: Wed, 3rd Jun 2015 12:39    Post subject:
Audiophiles generally love the good old placebo effect. Laughing

I had an audiophile as a colleague at work a few years back and when I said that you could barely hear the difference between a losless and a 320kbps MP3 he called me an idiot. So, I burned a losless song to CD, then converted that lossless song to 320kbps MP3 using lameMP3 and burned that to CD too. I gave him the CD and said "okay, you take it home, play it on your superior hardware and tell me which is which" (he had said before that I had shitty speakers and that his speakers were great and would clearly tell the difference).

So he took the CD home, listened to it and came to work and went "You cheated! You put the same song on the CD to trick me!". So to save face (because he clearly couldn't tell the difference) he attacked me, claiming there was no MP3 version on there. He also then claimed that a CD would always sound better than MP3 even if the CD was made with MP3 files Laughing *facepalms*

So ... long story short ... audiophiles love to kid themselves. Just like Apple fanboys, they love to excuse nonsense to justify the thousands they blew on overpriced hardware. Like using a $500 gold plated cable because it definitely, for sure, sounds better than a high quality $50 one. Rolling Eyes
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Nui
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Posts: 5720
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PostPosted: Wed, 3rd Jun 2015 12:59    Post subject:
So I've got somewhat good equipment and my room is even treated a little bit. Well, actually its quite a bit of mineral wool to slow down low frequencies. I also sit very close to my speakers (keyword near field), so that reflections dont matter as much for higher frequency. So my sound isn't completely muddled.

Before I take this test, I assume I'll fare badly Laughing Let's go ...

edit: nope, I cant even choose. I dont even hear placebo differences Laughing

Anyone here who can hear differences? Could you perhaps enlighten me what the differences are, without revealing the answers (in case they aren't randomized) ?
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Nui
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PostPosted: Wed, 3rd Jun 2015 13:10    Post subject:
red_avatar wrote:
Audiophiles generally love the good old placebo effect. Laughing

Thats why I hate searching for audio products online. I cant tell between real and crazy.
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dr-nix




Posts: 996
Location: Sweden
PostPosted: Wed, 3rd Jun 2015 13:26    Post subject:
fable2 wrote:
http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality

thought it was kinda interesting Razz

i could tell the difference between 128kbps and others but not between 320kbps and WAV but thats probably due to my cheap headset.


I could hear the difference in some of the samples (between 320kbps and WAV) but not all. It was easiest to hear by focusing on the human voice in each of the samples (atleast for me). But with that said the difference between 320kbps and WAV is negligible


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proekaan
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PostPosted: Wed, 3rd Jun 2015 15:00    Post subject:
I guessed most of them and got 5/6 right. Very Happy


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thryledz




Posts: 7

PostPosted: Wed, 3rd Jun 2015 16:07    Post subject:
Nui wrote:
Anyone here who can hear differences? Could you perhaps enlighten me what the differences are, without revealing the answers (in case they aren't randomized) ?


I focus on sibilance and cymbals - high frequency content - to try and figure out if the bitrate is lower because of lowered sampling rate (see nyquist sampling theorem). After that I try to distinguish the side sounds (of mid/side - remember taking out your headphones jack half-way in order to do "karaoke" on your walkman? that's listening just the SIDE portion of the audio ie anything not in center, chorus, reverbs, overhead mics on drums etc...) Haven't looked at what the lossy compression - mp3 in this case - does exactly, but i noticed it kills or at least heavily distorts the side information of any audio file.

If your sound card has a "karaoke mode" put it on and listen to a flac/cd and then the same song on mp3/youtube while toggling karaoke on/off - it's pretty apparent, no placebo there.. Smile
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Nui
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PostPosted: Wed, 3rd Jun 2015 16:25    Post subject:
Still cant reliably hear any difference. I can with 100% certainty get the wav though, because the samples loads slower Laughing

Maybe I'll search the internet for specific samples for clarifying the differences.
Thanks for your input dr-nix, thryledz.
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djaoni




Posts: 8061

PostPosted: Wed, 3rd Jun 2015 16:48    Post subject:
I got 5/6 with cheap CALs

The difference is negligible at best.
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ixigia
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Posts: 65038
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PostPosted: Wed, 3rd Jun 2015 18:30    Post subject:
Having an onboard soundcard and some vintage Senncheapo 201 made the challenge 100% democratic for me, in a way that they're all identical Sad
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PumpAction
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Posts: 26759

PostPosted: Wed, 3rd Jun 2015 18:38    Post subject:
I get the sound through my nvidia -> hdmi into my tv and from there I have attached the speakers to the headphone out... and then I attach my headphones to the headphone out of my speakers.

Even if there is no sound, I here cracking and so on.


So I might just skip this test Laughing


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KillerCrocker




Posts: 20494

PostPosted: Wed, 3rd Jun 2015 20:11    Post subject:
I am dissapointed...
Got only 3/6 correctly and I wasn't really sure. Only coldplay song was REALLY obvious.

And that's very weird. i remember converting x3m and other scene music like 10 years ago to mp3.
And back then I had shitty audigy card and very cheap headphones. And back then I could clearly hear that 128kb is more muffled than 320 etc... but that might have been me doing shitty compression stuff.

Now I have fiio e10k dac and very good headphones Brainwavz hm5 and can barely hera the difference.

The differences only come through at some instruments/sounds. Some of the recording they've used are just plainly bad source material. IMO Only purest digital music can be used for comparisons like that. That's why it was easier to hear in coldplay song.

everything else that is recorded with microphones in a room will have some kind of hiss or random sound anomalies picked up by microphone. And it's even worse on old music because of tape/vinyl quality

btw. I have my dac set to 24bit 48khz


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red_avatar




Posts: 4567

PostPosted: Thu, 4th Jun 2015 08:10    Post subject:
I just did the test myself. Gear:

Xonar U7 (=USB sound card)
SPDIF out
speakers = Logitech Z680 (ancient now - 11 years old - but still great speakers)

I actually got 6/6 but I suspect it's because the 320kbps MP3 sounds worse than it should - I could barely tell the difference between 128 and 320 which is weird (except for the last song - in classical music, the silence you hear makes it very obvious when the song is compressed because the quiet noise sounds uneven).
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Ralph_Wiggum




Posts: 438
Location: Springfield
PostPosted: Thu, 4th Jun 2015 12:28    Post subject:
The samples favor low quality.

For me at low volumes the difference is aubidle but quite minimal, cranking volume up it becomes clear.

Got same dac as KillerCrocker.


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Shoshomiga




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PostPosted: Sat, 6th Jun 2015 03:50    Post subject: I have left.
I have left.
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Interinactive
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PostPosted: Sat, 6th Jun 2015 04:17    Post subject:
⁢⁢


Last edited by Interinactive on Tue, 5th Oct 2021 00:46; edited 1 time in total
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garus
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PostPosted: Sat, 6th Jun 2015 10:40    Post subject:
snip


Last edited by garus on Tue, 27th Aug 2024 21:40; edited 1 time in total
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The_Zeel




Posts: 14922

PostPosted: Sat, 6th Jun 2015 11:09    Post subject:
got 4 out of 6 right, the other 2 were 320, it was too close.
huge difference between 128 and 320, little difference between 320 and uncompressed for me, i d need to test it with my home headphones, these work ones are very average.
but in the end 320 is enough for me Smile
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Nui
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Posts: 5720
Location: in a place with fluffy towels
PostPosted: Sat, 6th Jun 2015 13:42    Post subject:
Interinactive wrote:
I'm pleased that I can't tell the difference tbh, who needs even more expensive sound cards/headphones and so on

I dont hear the differences here at all so far. I already have expensive hardware and it is going to be more expensive, because there is still quite a bit of headroom left in quality, that I can discern (flatter response, lower frequency response, more speakers for surround sound). Still cant here the differences here Razz
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The_Zeel




Posts: 14922

PostPosted: Sat, 6th Jun 2015 13:47    Post subject:
you have to listen to them for a bit longer and then the clarity or lack of it is noticable.
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m3th0d2008




Posts: 9881
Location: Outhouse
PostPosted: Sat, 6th Jun 2015 15:57    Post subject:
red_avatar wrote:
Audiophiles generally love the good old placebo effect. Laughing

I had an audiophile as a colleague at work a few years back and when I said that you could barely hear the difference between a losless and a 320kbps MP3 he called me an idiot. So, I burned a losless song to CD, then converted that lossless song to 320kbps MP3 using lameMP3 and burned that to CD too. I gave him the CD and said "okay, you take it home, play it on your superior hardware and tell me which is which" (he had said before that I had shitty speakers and that his speakers were great and would clearly tell the difference).

So he took the CD home, listened to it and came to work and went "You cheated! You put the same song on the CD to trick me!". So to save face (because he clearly couldn't tell the difference) he attacked me, claiming there was no MP3 version on there. He also then claimed that a CD would always sound better than MP3 even if the CD was made with MP3 files Laughing *facepalms*

So ... long story short ... audiophiles love to kid themselves. Just like Apple fanboys, they love to excuse nonsense to justify the thousands they blew on overpriced hardware. Like using a $500 gold plated cable because it definitely, for sure, sounds better than a high quality $50 one. Rolling Eyes


Just like wine tasters, 90% are full of shit.


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AwE




Posts: 1686

PostPosted: Sat, 13th Jun 2015 16:13    Post subject:
You got 4 out of 6 correct!

Despite its bad rap, the MP3 is actually a remarkable feat of engineering, and pretty good at filtering out mostly the sounds you can’t hear. Depending on the quality of your headphones, you might be able to distinguish between the two MP3s, but you’re unlikely to do better without an amplifier or a digital audio converter.

I think it also depends on the quality of the "original" - I got that coldblay song totally wrong - all three sound horrible.

Oh, and my hardware is very cheap - turtle beach x12, no additional soundcard, just onboard.
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