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Old 11-02-2006, 01:52 PM   #1
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K3b Audio CD - [Q] regarding "index"

This is my first try at using K3b to burn an audio fact, my first try at buring an audio CD at all in Linux, though I've burned a few in Windows. I think my question isn't K3b specific, but more general audio CD burning.

I'm assembling tracks from vinyl, not ripping CDs, so have individually recorded, split and cleaned tracks in WAV format, with about 1-1/2 LP per CD.

In the K3b GUI, in the Properties window for a given file to be burned, the bottom section is "Indices".

(1) What are indices?

(2) There is what appears to be a time scale bar with a readout as I hover the cursor over it along its length. There's a check box followed by "Index" and an underlined number followed by a time readout with up and down arrows, followed by another time readout with arrows labeled "gap". This appears to be some way to set an indexing point within the track, but as a newbie at this, I'm not sure if I need to do anything with it or if it's just optional for setting address locations. Can anybody explain and tell me if I can get by without it, or if it's important, and if so, how to use it.

(3) What is the checkbox named "preemphasis" in the options section for?

(4) Once I have all of the files entered and the metadata, am I ready to burn? Any other suggestions?

(5) I have a part of a cone of blank Memorex CDs that were bought by somebody else - probably in ignorance - several years ago. They are labeled "music" CD-Rs. We intended and started using them for storing digital photos, but had various problems that I was told was due to their being intended for music - something about copy protection. Any truth to that, and if so, is there any advantage or disadvantage to using them for audio CDs, at least for practice, other than probably not as long-term stable as curren technology?

Thanks for your assistance!
Old 11-02-2006, 11:03 PM   #2
David the H.
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1&2) I'm afraid I can't answer you about the indices thing. I was curious about it myself and looked around, but I couldn't find any clear explanation for it. The only thing I can guess from playing with it is that it has to do with the gaps between tracks or something. If you want to break the .wav up into separate tracks, try the "split track" funtion in the right-click context menu.

3) Preemphasis seems to be a way to "brighten" up the sound by boosting higher frequencies as compared to lower ones. It's probably not a good idea to use it generally.

4) Yes, that should be all you need to do. You might want to add cd-text info for the album as well, but it's not really necessary since most players don't support this function.

5) Music CD's are a scam instituted by the music industry. They are pretty much identical to a data cd, except that they have an extra metadata field with a copy control bit included. This is the same flag that made DAT so successful a decade ago. They were mostly necessary when computers still weren't powerful enough for multimedia editing, and the only cd copy machines available were stand-alone stereo system recorders.

AFAIK, other than the meta-field and the extra cost that goes into the coffers of the RIAA, there's no other real difference in the disks. Maybe they aren't good for data, as you've discovered, but I think they'll be fine for audio. Just make sure you check the "copy permitted" flag in the track properties. (No guarantees though, as I've never used them myself).


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