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CDR rejected by plant as master

CDR rejected by plant as master

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From: Stephan Cahen : stephan.cahen[a]fh-duesseldorf.de

My comments are: Dear Mr. Katz ! I am student in sound and motion pic engineering in germany and I really love your homepage (do I have to say that I'm a big fan of your work as well ?!?). The articles helped me more than one time to understand all the difficult stuff around mastering - it`s really complex !!! But now I have a huge problem (and I hope you could write me a short e-mail back ifyou'd find the time to...): As a part-time job, I am editing and premastering classical music for a small german label. It`s my second production premaster that I sent to the CD plant just a few days ago. I wanted a CD analysis protocol and got it today with the remarks: "BLER andpit jitter fail". The BLER is: Min277? / Max 2174? / Last 1672? / Avg 585?. The diagram concerning the pit jitters shows data over 35 at two times. There are NO E32 fails in it.

I am using my Yamaha CD-RW 4260 since half a year with Kodak CD-R`s. Could it be that my toaster is garbage ? Or the CD-R`s ? This is the first time I received such a sheet and I don`t know how to interpret it exactly. What should I do ? Is it really necessary to send a new CD-R to the plant and pay for another protocol ? What can happen, if I`d agree to the production with that "shitty" CD premaster ? Sorry for asking you, but I don't know who else could help me - I'm really desperate !!! Please answer me as soon as you can !

Thank you very, very much & greetings from germany !!!

Stephan Cahen

Dear Stephan:

Thanks very much for your comments. I really appreciate your thoughts.

Your CDR was rejected because the error rate is too high. This means either that your writer is not very good and/or that the blanks you are using are not very compatible with the writer. If your writer and blanks are included in the section of our website under "Glenn Meadows" CDR tests, then you're in luck. The lower the BLER, the better you are. Values on the order of 1-10 are highly sought and can be achieved, so you can see that either your writer or your blanks may be toast, I'm sorry to say. However, those Kodak CD blanks are notoriously "writer fickle." You will notice a great improvement in BLER if you change to a formulation and speed that's more compatible with your writer.

The variations in errors with CDRs are extraordinary.

Sincerely,

Bob KatzĀ 

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