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CD digital audio extraction noise

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Name: Marc
Date: July 15, 1999 at 11:14:04 Pacific
Comment:

While recording my own CDR with digital audio from a different CD drive, I end up getting occasional pop and tick sounds. I determined the source of the problem to be the read drive and not the CDR drive. Any ideas on how to eliminate the noise problem from the read drive during the audio extraction? Should I slow down the extractino rate? Currently I extract at ~850kb/sec on a 36x (max) drive because that's what EZCD creator determined the setting to be.

Info appreciated. Thanks,
Marc



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Response Number 1
Name: Marc
Date: July 15, 1999 at 11:21:05 Pacific
Reply:

Wait, before you ask...

I determined the noise to be from the source drive because I tried recording to the hard drive first and then transferring it to the CDR. I burned two CDs from the same source and the pop and tick sounds were the same on both CDs.

My system:
ASUS P2B motherboard
Cel 450MHz (300 o/c, but same prob at 300MHz)
128M 8ns SDRAM
CL TNT vid
CL SB Live audio
Maxtor 8.4G HDD
I/O magic 36x (max) CDROM drive
Memorex 1622 CDRW (2x6) drive

-Marc


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Response Number 2
Name: ironman28
Date: July 15, 1999 at 19:22:16 Pacific
Reply:

I also have a cdr copier i don't know
how much signal noise gets into the cd but a problem may be you copier software certain programs purposely leave a 2 second gap between tracks , try using different software and get a cd rom cleaner kit it could be that you cdrom is dirty and it's introducing the pops otherwise also if you try barrowing some ones cdrom and use that otherwise I dont know


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Response Number 3
Name: Browser
Date: July 16, 1999 at 08:33:30 Pacific
Reply:

Try disabling your screensaver and as many
programs running in the background as you
can. When something else asks for your
processors attention (check screen saver
timeout, etc.)the CD burner can't wait on it
like software and disk drives can, the
result equals static, pops, and noise.


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Response Number 4
Name: Col
Date: March 31, 2000 at 07:37:00 Pacific
Reply:

You're right, the problem is with the source drive, not the write drive. The problem is that the digital audio extraction rate on the source drive isn't high enough. This is a physical limitation of the drive, not something that can be changed. EZCD Creator has a test to check the DAE. Ideally you want it to be above 600Kb/sec. I had the same problem with my CD-ROM (it only had 50Kb/Sec). To get round the problem I use my CD-RW drive to Extract the audio tracks to my hard drive (pre-record to WAV). This drive has >600Kb/sec so it produces perfectly clear sound when you create the CD from the WAV tracks back to a CD-R in the RW drive.
If you don't have enough space on your HDD (takes about 800mb per CD normally) then you might have to get a new CD-ROM to copy from. The best is probably the Plextor UltraPlex 40x, but hopefully the Pre-recording solution will work.


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Response Number 5
Name: Col
Date: March 31, 2000 at 07:47:54 Pacific
Reply:

Also, if your CD-RW drive doesn't have good DAE for Pre-Recording then try using this program for Audio Ripping:
http://www.ExactAudioCopy.de/eac.html


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