Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

---

[ Follow Ups ] Thread: [ Display  All  Email ] [ Tweakers' Asylum ]

---

[ Alert Moderator ] [ Edit ] [ Delete ]

---

Copied CD's sound inferior to originals.

212.27.58.68

Posted by Peufeu on September 11, 2000 at 06:10:13

Copied CD's sound inferior to originals.

Or this is what I was told by a respectable audio shop owner, who has very good ears and
also designs loudspeakers.
So, Why not ?

I powered up the computer, copied a music CD to hard-disk using EAC, burned the resulting
wav-files on a CD-R with my crappy 4X IDE HP CDburner. At 4X, of course. Then, I
extracted the audio I just wrote on the disk, again with EAC. Then I compared the "original"
and the "copy"

630 Megabytes. 5.04 10^9 bits. Not one difference.

I extracted audio with my CD-Burner instead of doing it with my CD-Player. They both agree
on what's on the disc.

Therefore we can conclude that the bit error probability of the process is less than 2e-10.
Probably much less, as Reed-Solomon codes are used.

All this with no green paint on the CD, no blue LEDs, no snake oil.

Therefore, IMHO, hearing differences between a digital copy and it's original means that

- EAC was not used for audio extraction (duh ! I heard some even use Easy CD creator !!)
- CD Transport should be ditched
- people hear things

As a reminder, EAC (Exact Audio Copy) is the only software that can extract audio data
from a CD with NO errors or scratches. You can find EAC at http://www.exactaudiocopy.de/

Is it too much to ask a $1000 transport to do the job of a $60 CD-Rom reader ?

I'd like to hear from your experiences with copied CDs.
Thank you.

--
_________________________

Pierre-Frédéric Caillaud
peufeu@free.fr
32 Passage Gonin
69001 Lyon
France

06 61 52 75 96
04 78 43 15 94

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---