General CD ripping question regarding slow rips

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by Teknojnky » Sun Apr 16, 2006 1:17 pm

Those of you with slow cd ripping, may want to double check the "CD Reader 3.00" input plugin configuration.

Goto Options, Player, Input Plugins, CD Reader-Configure, select the drive(s) and configure, ensure that the drive read options appear to be correct.

For reference, mine are set for "STPI", 24 sectors, aspi blank, SCSI-3, Maximum, 5 read retries, ignore read errors.

by Guest » Mon Apr 10, 2006 8:25 am

rovingcowboy wrote:thats right i forgot about them pressing the store bought cdroms? they might have slowed classical cdroms down to keep the plastic coating from disfigureing and messing up the leasor from reading the songs properly.
read that again it says Might have.

the speed is only for cdr's and cdrw's you burn.

weather or not they speed up and slow down the store bought pressed cd's is unknown but i don't thing they would as the chemicals are the things that warp with speed. not the plastic. it does but not enough to cause errors in songs it will shatter though if too spun fast. but it takes longer to shatter then the cdrw's with the chemicals on.

the only other thing that will becausing the speed change in your cdrom drive is the motor / the belt drive if use's a belt. / the power supply going out and not able to give the needed supply or too small and not able to give the needed power supply to the drive. / or a short in a cooling fan making it draw too much power from the power suppyly and thus cut the amount givin to the cdrom drive.

the cdrom drive at the top of the tower might not be getting enough cool air. as it is a little higher then the exhaust fan in the power supply so there is always too much heat on it. try putting a cooling fan in the drive bays just below the cdrom drive if you don't want to move the cdrom down. or put one in the side of the tower if you can but get some air moving around that cdrom and see if it stops the slow downs.

also try that power supply take the tower to the computer repair shop in your town and have them check the needed power for your system then match the right power supply for you.

drawing too much power from the short or overloading the power souce will also slow down things. just like heat so those are the only things i can think of if it is not the bit rot of the software drivers.


Roving cowboy / keith hall.
not logged in today yet

thanks agentsmart i can remember things most others think unimportant or just didn't hear or read.

8)

Well...

by tbessie » Mon Apr 10, 2006 2:37 am

agentsmart wrote:nice to see some one remembers them old news storys and error posts from other threads. 8)
I'm still trying to figure out if you're pulling my leg, 'cause other people had said that pressings aren't different in different genre's of music (that is, publishers of classical music don't specify different specs than those of other music). And I can't find a reference to such a "speed" code anywhere I've looked on the web.

Got any references?

- Tim

by agentsmart » Sun Apr 09, 2006 6:57 am

nice to see some one remembers them old news storys and error posts from other threads. 8)

by rovingcowboy » Wed Apr 05, 2006 3:35 am

thats right i forgot about them pressing the store bought cdroms? they might have slowed classical cdroms down to keep the plastic coating from disfigureing and messing up the leasor from reading the songs properly.

the classical people must have that higher demand for those musical songs have a lot of differnt bit's needed and have a higher bit rate on each song so they might have slowed it down to make sure nothing is missed. 8)

I have re edited this reply to add in some stuff because i forgot about it before i first posted the reply

Sorry :oops:

Thanks!

by tbessie » Wed Apr 05, 2006 3:09 am

Thanks, Keith, for your extremely complete and informational answer!
That makes perfect sense, although it wasn't intuitive at all... the idea that different disks are marked to spin at a certain max speed to protect their structure... such an odd thing in this era of devices that last so long.

I'm thinking it was a combination of this slowing down based on one of these markers on the disk (perhaps Classical genre CD manufacturers request that they are pressed with slower max speeds for their critical clientelle?); also, I ran Nero DriveSpeed and had it redetect the CD speed each time I put a new one in, and that bumped up the perceived read speed (had to restart EAC, though, to pick up the new speed).

It's all a Black Art, seemingly. :-)

Anyway, thanks again for all the info!

- Tim

by rovingcowboy » Wed Apr 05, 2006 2:46 am

okay to answer you on your troubles as best as i can.

one.

the cdrom's leasor light might be in need of a clean lens.
buy a cdrom lesor dusting cdrom disk from a store they are
a cd disk with several little brushes on them that wipe the dust
off the lens this will also give you better reading from the disks.

it might not slow down the ripping unless it is covered with a layer
of sticky humid grimy dust. but the lens should be dusted every now
and then anyway.

the heavy use of the cdrom drive might have wore out the motor or the drive belt which ever is used by the cd drive.

the cdrom manufactures have also the options of putting software in your
computer to slow down your ripping so you get tired of it and don't do it anymore.
we know sony was sued over adding software with out telling anyone, but how many others are out there doing it that we Don't know about?
they might not have done it but that is a possible reason so it needs to be checked in your system and see if they did it.

now also the item you said of your cdroms slowing down or speeding up every time you put in different ones..

the reason has been known for about ten years now. and about 4 years ago the mythbusters did a segment on their show about the reason, and found it to be Real and not a myth.

the trouble is the cdrom drives can spin the cdroms too fast. and they will wobble and too much then crack then shatter.

the chemicals and the plastic can only handle so much spin speed, and the companys make the disks spin at the speed they wish to, which is the speed they feel will get the most life out of the cdrom disk.


and they also use different chemicals on them in order to burn them at different speeds.

some chemicals are too thick to be used at high speed.

what happens is the wobble of the cdrom disk will make the chemical form a wave on the disk yes a small wave on it because they get liquidized by the heat from the lesor and the spinning.

what that does is make the disk lopsided when it spins and thus makes it more prone to crack and shatter at high speeds so the cdrom disk manufactures and the cdrom drive manufactures have got together and added software in to the cdrom drives that will read a coded number on the inner hub of the disk and adjust the spin speed of the drive for that disk.

you can read that number if you look closely at your cdrom disks it is very small. and close to the chemical layer of the disk.

but that is the reason they speed up or slow down.

8)

General CD ripping question regarding slow rips

by tbessie » Wed Apr 05, 2006 12:38 am

I'm using EAC to rip my CDs. Most CDs I've ripped, rip pretty quickly.
But this current batch are all ripping very slowly, even in burst mode... max of 8x speed for some reason.

As I mentioned in another post, these are all Classical CDs. The common factors among them all are 1) that they're all classical, and 2) I'm ripping them after having ripped several hundred other CDs.

So I'm wondering if 1) these CDs are just low quality (some are major recording houses, though), and 2) if my CD drive has just decided to start being slow, due to some internal mechanical failure.

Has anyone ever seen this? Rip tons of CDs for some months, no problem. Then, drive starts ripping slowly all the time?

Another question -- why does any given CD determine the ripping speed of the drive? Many programs, as soon as you put a CD in, change the calculated speed of the drive. I don't quite get why the CD itself would make a difference... aren't they all the same format and, assuming they are not damaged in any way, would be the same reading speed?

- Tim

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