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Oncle Boris is offline Oncle Boris
Prince
Once in a brown moon
Aug 2001
time: 00:34
  Old Post 15-03-2005 09:13
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It's more complex than that. I wouldn't be surprised at all if there was a great part of listening pleasure that can't be quantitatively measured.

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 15-03-2005 09:15 Visit Asher's homepage!
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As far as I'm concerned, the only people who want to make it more complicated than it actually is are people who want to obfuscate a point.

Digital audio is a stream of ones and zeros -- the more of these ones and zeros that arrive at the destination in-tact, the clearer the signal is.

There are other factors involved that can affect heard quality, such as minor things like the quality of the headphone jack...or major things like the quality of the headphones.

But that is much, much harder to quantify than SnR is. A device with a bad SNR will sound worse than a device with a good SNR, given everything else is the same.

Oncle Boris is offline Oncle Boris
Prince
Once in a brown moon
Aug 2001
time: 00:34
  Old Post 15-03-2005 09:17
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How do you measure the 0s and 1s in one's brain?

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 15-03-2005 09:26 Visit Asher's homepage!
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You don't, you measure it as well as you can in the electronics device.

If the signal gets corrupted by noise before it even gets to the brain, you can bet your ass that this affects clarity.

Barinthus is offline Barinthus
King
A Magical Moment...
Jan 2004
time: 21:34
  Old Post 15-03-2005 10:49
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Hot Topic, I am ashamed to say I own some stuff from there. I just couldn't resist those tshirts with Nintendo stuff.

Imran Siddiqui is offline Imran Siddiqui

Deity
The Potterverse
Jan 1970
time: 00:34
  Old Post 15-03-2005 10:53
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At least you are ashamed about it .

Giancarlo is offline Giancarlo
King
Los Angeles
Apr 2000
time: 02:34
  Old Post 15-03-2005 10:54 Visit Giancarlo's homepage!
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quote:
Originally posted by Barinthus
Hot Topic, I am ashamed to say I own some stuff from there. I just couldn't resist those tshirts with Nintendo stuff.


It is an awesome store.. I love it..

nostromo is offline nostromo
Prince
Montréal, Québec
Mar 2002
time: 00:34
  Old Post 18-03-2005 07:05
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quote:
WMP10 will only rip to 192Kbps WMA by default, so you should look into...other means.


I believe you're wrong. I have WMP 10 and all my songs are ripped at a 240 to 355 Kbps (variable bit rate). And if I rip them at lossless, it jumps to 470 to 940 Kbps! I'm not quite that anal about sound quality. Anyway, I probably couldn't hear the difference.

Man, these microdrive MP3 players are tempting... I could have the mini iPod for 225 $ Cdn. But for 70 $ more, you have the Zen micro, with an extra GB, better sound quality and better ear buds. The best price I found here in Montreal for the Zen micro is 295 $ Cdn.

Last edited by nostromo on 18-03-2005 at 07:21

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 08:05 Visit Asher's homepage!
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I'm not talking about VBR or Lossless.

I'm talking about CBR @ 320Kbps, which Boris was using dBPowerAmp to encode his CDs with. WMP only supports up to 192Kbps CBR.

nostromo is offline nostromo
Prince
Montréal, Québec
Mar 2002
time: 00:34
  Old Post 18-03-2005 08:20
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quote:
I'm not talking about VBR or Lossless.

I'm talking about CBR @ 320Kbps, which Boris was using dBPowerAmp to encode his CDs with. WMP only supports up to 192Kbps CBR.


I see. Is CBR @ 320Kbps a lot better than VBR @ 240 to 355 Kbps? Can you actually hear the difference?

Kuciwalker is offline Kuciwalker
Emperor
of Schmooism
Feb 2001
time: 00:34
  Old Post 18-03-2005 08:34
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quote:
Originally posted by Oncle Boris
No, his point is that audio fidelity as you define it does not necessarily result in better overall audio quality, which can only be subjective.


Reread his posts. For instance:

quote:
And which, while useful, are not really good enough to tell anyone which one sounds more like the real thing, or which one will sound better. That's just a fact.


And if your music sounds BETTER when reproduced less accurately, you really need different music.

Agathon is offline Agathon
Prince
Leafs 4TW!! - CPA
Dec 2002
time: 00:34
  Old Post 18-03-2005 08:55
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quote:
And if your music sounds BETTER when reproduced less accurately, you really need different music.


Oh dear... you don't get it do you.

SNR is not sufficient or necessary to determine heard audio fidelity. That's why it doesn't play any significant role in audio reviews. You can try to pretend it does until you are blue in the face, but it doesn't. Heard audio fidelity is simply too complicated to be accurately captured by the numbers.

I wish it was, then we would all have better equipment. But it isn't. End of story.

Kuciwalker is offline Kuciwalker
Emperor
of Schmooism
Feb 2001
time: 00:34
  Old Post 18-03-2005 08:59
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But it is, end of story.

Sava is offline Sava
King
GO GO GO!
Mar 2001
time: 23:34
  Old Post 18-03-2005 09:01
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I think we need a kill kuci party for apolyton

Spiffor is offline Spiffor
Emperor
CPA - Evil Clone brigade
Nov 2001
time: 06:34
  Old Post 18-03-2005 09:04
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Nah, he would stop visiting in here either

DRoseDARs is offline DRoseDARs

Prince
"My god, it's full of peas..."
Jul 2002
time: 21:34
  Old Post 18-03-2005 10:27
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Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 10:36 Visit Asher's homepage!
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The problem with Agathon's argument is heard audio fidelity is only as strong as the weakest link.

If the DSP and/or DAC you use introduces electronic noise in place of the signal (that is, "bits" of the bitstream are corrupted), it will directly impact other factors later (headphone adapter, headphone cable, headphone quality, driver size, etc), not to mention other factors such as THD and crosstalk.

SNR numbers play a rather significant part in digital audio fidelity, it's simply part of the science that some people choose to believe is art to justify some absurd opinions.

Whether it sounds "better" or not is art, whether it's accurate reproduction is science. It's 2005, it's time for some people here to realize that.

monolith94 is offline monolith94
Emperor
New England
Jan 1970
time: 00:34
  Old Post 18-03-2005 11:12 Visit monolith94's homepage!
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Hot Topic is the epitome of what I hate about... everything.

Tingkai is offline Tingkai
Warlord
To find the Northwest Passage
Aug 2001
time: 13:34
  Old Post 18-03-2005 22:13
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quote:
Originally posted by Agathon
But the only way to really test audio equipment is to compare the sound yourself by doing listening tests. If you really care about the sound you get, you will do that, and it will ensure that you get something you like.

And that in the end, is the only thing that anyone can really say.


The word.

The thing I don't understand is why people care so much about what other people buy.

I compared the zen touch with the iPod and I like the iPod better. The sound quality is about the same, but the zen touch is a cheap piece of plastic crap in my opinion.

Boris likes the zen touch better. Fine, what do I care.

As for giving advise, all I'd say is spend money on a good set of earphones simply because you pay for what you get and the earphones make all the difference.

Agathon is offline Agathon
Prince
Leafs 4TW!! - CPA
Dec 2002
time: 00:34
  Old Post 18-03-2005 22:19
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quote:
Originally posted by Asher
The problem with Agathon's argument is heard audio fidelity is only as strong as the weakest link.

If the DSP and/or DAC you use introduces electronic noise in place of the signal (that is, "bits" of the bitstream are corrupted), it will directly impact other factors later (headphone adapter, headphone cable, headphone quality, driver size, etc), not to mention other factors such as THD and crosstalk.

SNR numbers play a rather significant part in digital audio fidelity, it's simply part of the science that some people choose to believe is art to justify some absurd opinions.

Whether it sounds "better" or not is art, whether it's accurate reproduction is science. It's 2005, it's time for some people here to realize that.


Again - from Wikipedia

quote:
The designer of a system for sound reproduction needs to be able to measure the system's performance in a number of areas. While this is not a measure of quality but of quantity, it is a fact that certain quantifiable measurements must be of a certain order to assure quality. That said, it is possible to design systems that sound terrible nevertheless — in other words, a quality system will attain certain measurements, but the existence of those measurements does not guarantee quality.


Everyone who loves hi fi knows this. We simply don't have measurements that are accurate enough to predict with reasonable certainty which systems will sound better and more faithful to the original sound.

You can rabbit on all you like, but the entire audio review industry agrees with me. So give it up.

Agathon is offline Agathon
Prince
Leafs 4TW!! - CPA
Dec 2002
time: 00:34
  Old Post 18-03-2005 22:23
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From the Mpeg audio FAQ

http://www.chiariglione.org/mpeg/fa...aud/mp1-aud.htm

quote:
What is the Signal-To-Noise Ratio (SNR) of MPEG Audio?

For a perceptual codec, this is not really a relevant question. The SNR is a very bad measure of perceptual audio quality, even for a waveform coder. The SNR measured in a conventional way, may vary from a few dB up to more than 100 dB, mostly depending on the signal, while no noise is audible in any of these cases. Within the International Telecommunication Union (ITU-R), a task group (TG 10/4) is working on the development of a more appropriate objective measurement system, based on perceptual models. For the moment, one has to rely on the human ear as a measuring instrument, i.e. there are no other reliable means to determine the quality of a perceptual codec than listening tests. Even when a standardised perceptually based objective measurement system is available, listening tests will still be wise for comparison of different audio codecs.


Kiss my ass Asher.

Agathon is offline Agathon
Prince
Leafs 4TW!! - CPA
Dec 2002
time: 00:34
  Old Post 18-03-2005 22:31
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quote:
The use of measures such as MSE (SNR) allow us to get an objective indication of the performance of our processing. Such measure is known to have little perceptual meaning as far as considering the human psychoacoustics;


http://www.isr.umd.edu/~cknoll/enee624/proj1.html

Agathon is offline Agathon
Prince
Leafs 4TW!! - CPA
Dec 2002
time: 00:34
  Old Post 18-03-2005 22:40
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http://www.stereophile.com/asweseeit/572/

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 23:11 Visit Asher's homepage!
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quote:
Originally posted by Agathon
You can rabbit on all you like, but the entire audio review industry agrees with me. So give it up.

Strawman -- I'm not saying good SNR guarantees "good" sound. I've made this very clear.

If you have a component in the chain of sound reproduction that loses lots of the signal, that will impede the highest possible sound quality available.

I really don't give a rats ass what these pretentious audiophiles claim -- most of them probably can't even comprehend the concept of a bitstream let alone the implications of SNR with a bitstream.

They don't understand the technology if they think the SNR doesn't have an impact on the integrity of the digital signal.

I agree that ideally you need to listen to both to see which sounds better. My argument is that if you have a system with a crap SNR (ie, noise impedes on the signal in a significant way, resulting in loss of signal), it cannot possibly sound as good as a system with a good SNR, given everything else is the same.

Frankly, anyone who says otherwise needs a crash course in digital audio.

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 23:14 Visit Asher's homepage!
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quote:
Originally posted by Agathon
From the Mpeg audio FAQ

http://www.chiariglione.org/mpeg/fa...aud/mp1-aud.htm

Kiss my ass Asher.

You really do love those strawmen -- evidently, the only way for a philosophy major to try to win any kind of argument.

1) I've said, repeatedly, that under ideal circumstances, you should compare them and make a judgement (in all referenced cases here -- except for Tingkai who obviously has a bias if he calls one 'cheap plastic junk' and a vendetta against the Creative CEO -- people say the Zen sounds better)
2) I've said, repeatedly, that SNR in digital audio is a useful metric for measuring signal integrity of components. If you lose the signal in an early stage of the output, you cannot get it back. Saying that it's irrelevant is saying it's irrelevant that lots of information is missing from JPGs compared to BMP. It's not irrelevant...

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 23:17 Visit Asher's homepage!
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quote:
Originally posted by Agathon
http://www.stereophile.com/asweseeit/572/


An article from 1989 written by a bobb from the most famous pretentious audiophile magazine, clearly from an expert in modern digital audio reproduction.

Good catch.

Asher is offline Asher
King
Calgary, Alberta
Nov 1999
time: 22:34
  Old Post 18-03-2005 23:22 Visit Asher's homepage!
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quote:
Originally posted by Agathon
quote:
The use of measures such as MSE (SNR) allow us to get an objective indication of the performance of our processing. Such measure is known to have little perceptual meaning as far as considering the human psychoacoustics;


http://www.isr.umd.edu/~cknoll/enee624/proj1.html

Aha, the problem here is you don't seem to understand the other ramifications.

One of the reasons that the Zen DSP is so much better is because of things like the reduced SNR.

If you do things like EAX on the iPod, the "defects" introduced by poor SNR get amplified. It's akin to the need for higher precision color depth internally on 3D cards (128-bit color on DX9-era hardware), while the external color remains 32-bit (well 24-bit w/ alpha channel).

There are reasons internal SNR measurements are useful in modern digital audio, ones I don't think most hobbiest audiophile philosophers are aware of, or even apparently capable of comprehending.

Once you design a DSP and DAC, come back to talk to me.

DRoseDARs is offline DRoseDARs

Prince
"My god, it's full of peas..."
Jul 2002
time: 21:34
  Old Post 02-05-2005 08:32
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I just got home from CIrcuit City with a black Zen Mirco for $199.99 USD plus tax. It's charging right now and pulsing blue. :mesmorized:

 
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