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Re: filmscanners: CD from Scanner



Hi, Steve--

I get from your post that you're recording a lot of music CDs. This, I 
think, is a little different from data CDs (even photo CDs), in that music 
CDs are *extremely* time-sensitive, while data CDs are not. Having the 
fastest possible CD burner is an advantage with music CDs--it's not such a 
big deal with data CDs. I could be wrong on this, but I don't think so--if I 
am, someone will happily come in and correct me (at least I'd hope so). :-)

I can see how, in this case, CD-RW would give problems with your 
applications. CD-RW is slower than CD-R--we may be talking about "Data-Clog" 
again. If anybody actually knows the numbers, this would be a good time to 
enter the discussion--I don't think that Music CDs and Data CDs are 
comparable. Correct me if I'm wrong, and Steve and others will hopefully be 
grateful.

Best regardw--LRA


>From: "Steve Greenbank" <steve@gccl.fsbusiness.co.uk>
>Reply-To: filmscanners@halftone.co.uk
>To: <filmscanners@halftone.co.uk>
>Subject: Re: filmscanners: CD from Scanner
>Date: Thu, 12 Jul 2001 20:08:55 +0100
>
>I wrote:
> >
> > > > My own personal experience is that CD-RW is more
> > > > temperamental.
> >
>Since a few people have commented on this I think I should give a little
>more detail.
>
>I have extensively used CD-R even some dodgy cheap brands in my car 10
>CD-stack. These discs are exposed to temperatures from just under 0C to
>around 50C - no doubt wild fluctuations in humidity too. Non of these disks
>have displayed any problems at any time other than the odd unrepeatable 
>skip
>on a big bump. Some were frequently swapped but others spent 2-3 years in
>there.
>
>I have since changed cars and wanted to install a CD MP3 player. I couldn't
>get one at sensible price in the UK so I tried a personal MP3 CD player
>(Napa Dav 310 largely dictated by UK availability) - it's a load of rubbish
>and has a firmware bug that  makes it skip approx 1.5MB into any file
>recorded at anything other than 128kbits. With this unit I found my TDK
>CD-RW would only play reliably in the car if I recorded at 4x or lower and
>with the anti-shock in full on mode at 8x or 10x it would only work when 
>the
>unit was sat on a firm platform. This sort of problem was not uncommon with
>similar units according to several bulletin boards. The Napa went back -
>it's a load of rubbish and has a firmware bug that  makes it skip approx
>1.5MB into any file recorded at anything other than 128kbits.
>
>I now have a Kenwood in-dash MP3 (MP6090R - 8090 in US I think) this works
>great but it did suffer the odd problem whilst using the TDK R/W disc, but
>is apparently flawless with any old CD-R.
>
>I have also on several occaisions written to cheap CD R/W and been unable 
>to
>read it minutes later on the writer or anything else. Yet I can re-write it
>and it reads fine.
>
>Whilst I realise some of these problems are in part due to the quality of
>the electronics or cheap media. Not all have been and it rather suggests
>that the technology is running on the edge.
>
>Oh and the cheap CD-RW media was acquired by accident. I was sent the wrong
>CDs mail order. I couldn't be bothered with the hassle of returning them so
>I negotiated a discount to forget about it (I paid 40p a disc 2 years ago).
>I only use these discs to transfer big files from one machine to another
>where I have no network link. For this they are great - except when they
>suffer temporary amnesia.
>
>Oh and the cheap CD-Rs were deliberately bought for the car when there was
>quite a significant price difference - no point having good one's knicked
>and I could always remake them from the originals.
>
>Steve
>
>

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