CD Replication vs CD Duplication

Subject: CD Replication vs CD Duplication
From: Maryrrf
Date: 27 Oct 02 - 01:07 PM

I've noticed that there are two different terms used out there - CD replication and CD duplication. The replication seems to be cheaper. Does anybody know the difference? Thanks,
Mary

Subject: RE: CD Replication vs CD Duplication
From: GUEST,Al
Date: 27 Oct 02 - 03:14 PM

I'm not sure how these terms should be used. However, there is a large difference between the way a commercial facility creates CD's from a master versus the burning technology your home computer uses. Perhaps the terms ought to be used to differentiate between these two technologies. My guess is that most times, "duplication" and "replication" are being used interchangeably. Al

Subject: RE: CD Replication vs CD Duplication
From: GUEST,Ron
Date: 27 Oct 02 - 03:21 PM

I have Adaptec CD creator installed in my computer

I have tried to record a wav file to a CD but cannot do it for some reason

I have tried to copy a cd from a master cd

I think I am making head way but when it is ready to write to it a message comes up and says please install a CD with sufficent space

I am using new CD

Please help me


duhhhhhh


Ron

Subject: RE: CD Replication vs CD Duplication
From: Uncle_DaveO
Date: 27 Oct 02 - 03:27 PM

Caution: This is written while I am sitting upon an immense heap of ignorance about the argot of the industry.

That said, seems to me that "replication" might be an approach whereby the source is read, (in effect played, bit by bit) and the resulting information then is put into another CD as an independent process. Kind of like copying a file from your hard drive onto a floppy or another hard drive.

Then, by this speculation, "duplication" would be like making an image backup of a hard drive, which preserves a lot of information about the relative position of information on the source, and so forth. A Xerox, if you will, of the source.

I hope what I've said (regardless whether it correctly reflects what the industry means by the words) makes some sense.

Dave Oesterreich

Subject: RE: CD Replication vs CD Duplication
From: GUEST
Date: 27 Oct 02 - 04:23 PM

Replication is a manufacturing process. You replicate from a glass master and press CD's.

Duplication is what you do in a burner. CD-R's would be duplicated.

Subject: RE: CD Replication vs CD Duplication
From: GUEST,Folkmonster
Date: 27 Oct 02 - 06:03 PM

Er, no. Shurely not.

My understanding was that a duplicate - a 'dupe' is what comes out of a CD pressing plant. That is it is a duplicate - an *exact copy*.

A replica on the other hand is just that - something that looks (or sounds?) the same but isn't. So a replicated disk is one that is made on a home burner.

FM

Subject: RE: CD Replication vs CD Duplication
From: WFDU - Ron Olesko
Date: 27 Oct 02 - 08:56 PM

Er, technically Folkmonster the other guest was correct. However you are also right.

Confusing? It sure is.

I work in a post-production facility and often have to perform this service for clients. We get asked the question almost daily.

Replication is normally the term given to the manufacturing process. For CD's there is a stamping machine that first puts the "pits" in a layer that the laser will read and then subsquent layers are placed over this. This is what you normally buy for commercially released CD's.

CD-R's differ in that the layer is "burned" into an existing disc, and they are more apt to have problems. You wouldn't mass produce "burned" CD-R's, but they are what all home units create.

Some facilities differentiate by calling one-off CD-R's "duplication" and mass produced CD's "replication". If you are making a single or a small quantity of CD's, you would tend to use the CD-R's. Larger quantities are "replicated".   However, the terms are usually used for the same product depending on the facility.

I've never heard of CD's being referred to as "dupes", but I suppose there are places that call them that.   Usually a "dupe" is a copy of a video tape.

Again, it is mainly semantics.   The main thing is to discuss what process you are receiving when you have your CD's copied.
Ron

Subject: RE: CD Replication vs CD Duplication
From: dick greenhaus
Date: 27 Oct 02 - 09:06 PM

re: sufficient space

CDROMs come in 74 minute and 80 minute ratings. Make sure you're copying onto the larger capacity CD.

Subject: RE: CD Replication vs CD Duplication
From: GUEST,ro1sin
Date: 27 Oct 02 - 09:22 PM

thank you kindly for that info i will check

ron

Subject: RE: CD Replication vs CD Duplication
From: GUEST,Jim Clark..London..England
Date: 28 Oct 02 - 04:35 PM

Ron if you are copying wav files..you will need to copy them onto a data CDR not an audio CDR (wav is a data format not a pure audio format)..

Subject: RE: CD Replication vs CD Duplication
From: Ron Olesko
Date: 28 Oct 02 - 04:51 PM

That is true Jim. I was responding to the question concerning the difference between duplication and replication.

Subject: RE: CD Replication vs CD Duplication
From: treewind
Date: 28 Oct 02 - 05:11 PM

Jim - red herring alert! The usual way to burn an audio CDR on a computer is to start with .WAV files.

If I point my CDR recording program (Linux cdrecord) at..WAV files it assumes I mean to create an audio CD. Windoze progs probably do similarly.

And computers can make both types of CD on data CDR blanks: it's only audio CD recorders that have to use special "audio" blanks with the "no-copy" SCMS code hard-burned in.

Anahata

Subject: RE: CD Replication vs CD Duplication
From: GUEST
Date: 29 Oct 02 - 02:25 PM

And the terms 'recreation' and 'copy'and 'imitate' and 'imaging'?

Subject: RE: CD Replication vs CD Duplication
From: Ron Olesko
Date: 29 Oct 02 - 02:37 PM

Now you are in dangerous territory!!   How much time do we have?

Subject: RE: CD Replication vs CD Duplication
From: GUEST,Jim Clark..London..England
Date: 29 Oct 02 - 03:04 PM

Anahata,

In practice you will find that Wav files will record onto a data CD but not onto an audio CD without more specialist CD burning software than is supplied on home PC's as bog standard..I'm simply telling as my experience has found I'm no computing expert,I have both a Philips doubledeck stand alone CD recorder and the usual PC Adaptec CD writer thingamybob so I've experience of both