[ale] Rehat 9 ide-scsi

[Dow Hurst]

Grip has cdparanoia built into it.  In fact the only notes on popping 
and distortion is mentioning that you will get those effects if you 
don't have DMA access enabled for the cdrom drive.  So ide-scsi 
emulation is recommended.  However the docs are a bit old since the 2.4 
kernels now do support dma access on CDROMs and DVDROMs.  I need to read 
the docs on cdparanioa.  Maybe I am missing a parameter setting that 
could improve the rip.  What I should do is play the ripped file and see 
if the pop is there.  I have only played the encoded ogg files via XMMS.
Dow


Matthew Macumber wrote:

>What program are you using to rip the cd's?
>I won't trust anything other than cdparanoia.
>
>-matt
>
>On August 27, 2003 09:56 pm, Dow Hurst wrote:
>  
>
>>The reason I am posting this is that even though I can set the DVD
>>reader to use dma, Grip still produces pops and thumps in the encoded
>>ogg files.  I thought setting the drive to use dma would make the
>>difference but I still get problems with the quality of the output.  I
>>thought then that going to the ide-scsi emulation would work but so far
>>Grip won't use the device properly.  I've put the hdc=ide-scsi in
>>/etc/grub.conf just like you've shown.  It works just fine and the
>>/dev/scd1 is now the device that is the active scsi emulation device.
>>I can read the CD titles using it but the rip doesn't happen normally,
>>it goes really quick with no output.  No encoding takes place.  I'm just
>>working on getting my CDs encoding in ogg format prior to burning on a
>>DVD. :-)
>>I wanted nice sounding ogg files before I went any further.  I have set
>>the bitrate for encoding to 192 and the quality for oggenc to level 6.
>>Doesn't help with the /dev/cdrom using dma and no ide-scsi emulation.
>>
>>The order I've tried this stuff:
>>
>>/dev/cdrom  no dma        sounded horrible with distortion, pops, and
>>thumps /dev/cdrom  with dma      sounded better but still has predictable
>>pops and thumps
>>/dev/scd1   with ide-scsi no rips happening
>>
>>I am working on classical CDs since you can distinctly hear the problems
>>where rock hides some of the pops and thumps.  Thanks for the help,
>>Dow
>>
>>James P. Kinney III wrote:
>>    
>>
>>>It goes in grub as it's needed at boot time:
>>>
>>>title Custom kernel (2.4.18 xfs & ext3 and good USB)
>>>       root (hd0,0)
>>>       kernel /kernel-2.4.18-LNS1.2 ro root=/dev/hda5 hdd=ide-scsi
>>>
>>>On Wed, 2003-08-27 at 19:35, Dow Hurst wrote:
>>>      
>>>
>>>>In Redhat 9, where do you put the ide-scsi=hdc command?  I'm used to
>>>>SuSE and in /etc/sysconfig/ there is a file for that purpose.  You can
>>>>put which IDE devices should be treated with the SCSI emulation.  I
>>>>can't find this under RedHat.  There is a hwinfo file that shows what is
>>>>currently configured but not a place for defining the configuration.  I
>>>>was avoiding modifying /etc/grub.conf since I thought RedHat might have
>>>>provided a more elegant way of managing this.  I am just too used to
>>>>German engineering?  Anyway, I just want /dev/hdc emulated as a SCSI
>>>>device. Dow
>>>>        
>>>>
>
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>  
>

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Dow Hurst                  Office: 770-499-3428            *
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