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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: May 31 2005 at 06:06 |
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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: May 31 2005 at 06:13 |
Good burner:
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goose
Forum Senior Member
Joined: June 20 2004
Location: United Kingdom
Status: Offline
Points: 4097
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Posted: May 31 2005 at 06:48 |
oliverstoned wrote:
Because actually it's more complex that just 0 and 1. Sound is much more complex. And when you hear the difference between a computer-burned Cd and an original on a transparent system, you cry!! |
But a CD isn't more complex than 0 and 1, that's exactly how the data is stored! Any perfect digital copy is bit identical to the original, regardless of how it's done! How can it be more complex than 0 and 1 when only 0s and 1s are recorded? This has nothing to do with analogue vs. digital - I'm talking about when the music is already in a digital form.
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oliverstoned
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Joined: March 26 2004
Location: France
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Points: 6308
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Posted: May 31 2005 at 06:58 |
No! sorry!!
There are harmonics issues, supersonic noise and many other things.
And all that alter these 0 and 1!!
Come to my home with an original Cd and its computer copy an i will prove you by listening in 10 seconds!
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goose
Forum Senior Member
Joined: June 20 2004
Location: United Kingdom
Status: Offline
Points: 4097
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Posted: May 31 2005 at 07:03 |
But the harmonics and supersonic noise is still 1s and 0s!
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oliverstoned
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Joined: March 26 2004
Location: France
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Points: 6308
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Posted: May 31 2005 at 08:27 |
Yes, so consider that the integrity of the musical message (0 and 1) is not respected
!!
I'll get more precise info on this issue, but when you hear the difference, it's obvious
Another interesting thing about burn cds : when you record at high speed on the audiophile recorder, the sound is less good than at normal speed…like for tape !!
Here are a few technical answering elements from sites found on the net, about computer sound:
“Why are plug-in computer cards so jittery? Does this affect my work with the cards?
Most computer-based digital audio cards have quite high jitter, which makes listening through them a variable experience. It is very difficult to design a computer-based card with a clean clock--due to ground and power contamination and the proximity of other clocks on the computer's motherboard”
“I've also observed that a 4X-speed SCSI-based CDR copy sounds inferior to a double-speed copy and yet again inferior to a 1X speed copy.”
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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: May 31 2005 at 08:32 |
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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
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Points: 6308
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Posted: May 31 2005 at 08:38 |
Here's the inside view of a serious CD player (mark Levinson)
http://www.audioclub.it/h/audio/prodotti/MARKLEVINSON/PICSML /ML_390Sopen.jpg
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o0mr_bill0o
Forum Groupie
Joined: May 30 2005
Status: Offline
Points: 47
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Posted: May 31 2005 at 10:56 |
oliverstoned wrote:
No! sorry!!
There are harmonics issues, supersonic noise and many other things.
And all that alter these 0 and 1!!
Come to my home with an original Cd and its computer copy an i will prove you by listening in 10 seconds!
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ever heard of placebo? think it through logically. when you
burn a cd, any cd, it's all digital. that means all the data is
is comprised solely of 1s and 0s. moreover, the burning software
does a check after the burn to ensure that the burned cd is identical
to the source. barring issues with degradation of the media and
compatability issues with various types of players, there is absolutely
no reason why it would sound different.
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oliverstoned
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Joined: March 26 2004
Location: France
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Points: 6308
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Posted: May 31 2005 at 11:04 |
read up
jitter is one explanation
all the people who come to my house and make BLIND test feel a hude difference.
Placebo?
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oliverstoned
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: May 31 2005 at 11:09 |
...it's at the point it runs off the line in the highs, like MP3, which saturates too.
But you need a real sytem to hear it (whereas when i listen to a mp3 on my crappy computer loudspeakers, it clearly hear saturation on the "forte" too!)
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goose
Forum Senior Member
Joined: June 20 2004
Location: United Kingdom
Status: Offline
Points: 4097
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Posted: May 31 2005 at 11:27 |
oliverstoned wrote:
...it's at the point it runs off the line in the highs |
A copied CD literally doesn't do that, unless it's been converted to MP3 between ripping and copying.
On any decent drive the actual data on the CD will be exactly the same - the only issue is that because the tracks aren't done the same way it's harder to read for the CD player so some mistakes might be made. However, there aren't any mistakes on the CDR (if it's done properly), just in the reading. Plus CDR, especially cheap CDR, degrades rather quickly.
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oliverstoned
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Joined: March 26 2004
Location: France
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Points: 6308
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Posted: May 31 2005 at 12:03 |
You can play on words between "distorsion" and "harshness", more the system is transparent, more you hear the defects.
I don't talk about track pb (TOC), i only talk about sound issue.
Anyway, i talk to a wall...
If you had a transparent system, you would know what i mean.
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goose
Forum Senior Member
Joined: June 20 2004
Location: United Kingdom
Status: Offline
Points: 4097
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Posted: May 31 2005 at 13:31 |
If an original CD has the data 10001011110100100011 (etc. etc.), the copied CD will also have the data 10001011110100100011 (etc. etc.). Where's the distortion introduced?
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o0mr_bill0o
Forum Groupie
Joined: May 30 2005
Status: Offline
Points: 47
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Posted: May 31 2005 at 16:24 |
goose wrote:
If an original CD has the data 10001011110100100011
(etc. etc.), the copied CD will also have the data 10001011110100100011
(etc. etc.). Where's the distortion introduced? |
exactly. any distortion has to be introduced on the player side,
rather than the burner side. i really can't believe a thing
oliver says until he can tell me why distortion is
introduced. so far, he hasn't been able to do this. a lot
of people believe that if they wear magnets on their back it'll make
them healthier, and just because some people say it's true doesn't make
it anything but complete and utter bullsh*t.
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The-Bullet
Forum Senior Member
Joined: January 23 2005
Location: United Kingdom
Status: Offline
Points: 401
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Posted: May 31 2005 at 18:23 |
That's the point I was raising. We're not talking about playback, but the copying of 0's and 1's. If a cd burner on a PC "mis-copies" then wouldn't any software it was copying crash ?. Now, if you're talking about a Hi-Fi cd player misreading these cheaply produced standard cdr's then that's a different matter.
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"Why say it cannot be done.....they'd be better doing pop songs?"
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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: June 01 2005 at 08:26 |
Yes i know it's hard to believe but when you hear the difference, you don't even search the reason.
It's at the point i give more than 100 computer-burned cd to a (non-audiophile) friend...
Now my collection is only made of original cd and "good" copy made on audiophile recorder.
I insist: the difference is HUGE, everybody agrees in BLIND TEST.
I will find an explanation!
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Certif1ed
Special Collaborator
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Joined: April 08 2004
Location: England
Status: Offline
Points: 7559
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Posted: June 01 2005 at 10:53 |
The explanation is in the software.
As goose says, a CD burner puts 1s and 0s onto a CD - it doesn't introduce them or remove them; it CAN'T. Sound data is like any other data; just streams of 1s and 0s. It CANNOT change if it is directly copied, but it can if it is in any way manipulated.
When you burn an audio CD, you rely on a variety of algorithms to convert from one format to another in the burning software (e.g. WAV to CDA). If you do a "straight copy", you are still relying on the software to extract the data and put it back together exactly as it found it - which it might not, depending on the algorithm used.
Although I do not know how every CD burning package performs it's tasks, I have noticed that most seem to create a temporary "spool" file on the hard disk. This suggests to me that it writes the audio data to a proprietary encoded file (changes the data) before encoding it to CDA (changing it again).
A high end burner, in all likelihood, uses either a highly efficient algorithm in it's firmware, or none at all (which is best of all, as it would leave the data fully unchanged). I don't know enough about the mechanics of CD Burners, but I do understand software and data to a reasonable extent!
Plausible?
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oliverstoned
Special Collaborator
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Joined: March 26 2004
Location: France
Status: Offline
Points: 6308
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Posted: June 01 2005 at 11:10 |
Absolutely!
The audiophile burner has its own converter.
In the case of the Pionner shown above, its called "Legato link" and it even "add" informations!
(that's why it sounds softer on playback, even when you play bad mp3 cds, it compensate actually, by recalculating miising info).
As you see,guys, it's not that simple!!
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BaldJean
Prog Reviewer
Joined: May 28 2005
Location: Germany
Status: Offline
Points: 10387
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Posted: June 01 2005 at 11:12 |
I never listen to MP3. First of all I prefer to have the CD myself (we have a huge collection of CDs and vinyls home), and second I don't like to listen to just one song taken out of context; I either listen to the whole album or not at all. I am not interested in ephemerae.
Edited by BaldJean
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A shot of me as High Priestess of Gaia during our fall festival. Ceterum censeo principiis obsta
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