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Matthias, What I meant by cheap disk is the data type disk. They are cheaper than the consumer audio disk (because of the tarrif on the audio disk). I didn't mean to imply that the lower cost disks are inferior in any way. I don't know how computer based cd burners handle optimization, or if they do test burns. I only know what my HHB standa alone CD audio recorder does. Optimization would allow the burner to create usable disks across the varied blanks. The disks vary due to manufacturing variences, as well as formulation differences from company to company. We use optimization routines in manufacturing hard disk drives. The variation in heads, media, preamps and other components, along with asssembly variences create a population of drives that may not work (write and read) optimally. So, we tune several parameters such as write current, and dsp filter settings on the read channel in order to make the all (or most) of the drive population write and read reliably ( over the life of the drive). If they can't be optimized, the drives are rejected and rebuilt. bret --- Matthias Grob <matthias@grob.org> wrote: > > What do you mean by cheap disk? > Does this mean that in my recorder this optimizing > process never happened? > If so, I doubt its necessary. > > Can you give us some sources for those theories? I > really want to > learn all about it... > > Thank you > Matthias > > > ---> http://Matthias.Grob.org > __________________________________________________ Do You Yahoo!? Talk to your friends online and get email alerts with Yahoo! Messenger. http://im.yahoo.com/