Copying audio CD with dd/cdrecord produces unplayable CD

Joerg Schilling Joerg.Schilling at
Sat Nov 29 04:36:11 PST 2008

>I am trying to copy an audio CD.

>First I've ran:
>dd if=/dev/acd0tN of=track-N.cdr bs=2352
>for every track. This gets raw track files.

>Secondly I run:
>cdrecord -v -dao -audio $* dev=2,0,0 speed=4
>This is supposed to recreate the original CD.

>But when I try to play it I can hear only noise.

Well, you should not expect to get a usable read
result from dd.

It is much better to use cdda2wav -vall to read the original
and if you later use cdrecord -useinfo ....
you will get a correct copy.

BTW: cdrecord of course works in a platform independent way and thus
expects raw audio data in standard network byte order....


 EMail:joerg at (home) Jörg Schilling D-13353 Berlin
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