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Re: wav to cd



On Fri, 30 Jun 2000, Ely Levy wrote:

> other way is using raw device copy but i think some audio cds are
> protected

you can't rip music with raw device copy of /dev/cdrom, you need direct
access to the hardware for that and talk to the scsi device directly,
since music is stored in raw sectors, and data in cooked sectors. hence
no error correction, hence the slower-than-data rip speeds.

music CDs lose more info over the years that way, the data correction is
up to the CD player, using heuristics or some other logic on its DSP. 

for all the above reasons, rippers and burners use the scsi ID numbers
directly (see the cdrecord commandline) and need SCSI Generic device
support in the kernel.

-- 
Ira Abramov, GNU/Linux advocate.
(@-  "message passing as the fundamental operation of the OS is 
//\  just an excercise in computer science masturbation. It may 
v_/_ feel good, but you don't actually get anything DONE."
                                -- Linus on Microkernels.



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