CD-R quality (was Re: Shameless CDR vs CD questions)

[trev]

Real Festival Music now uses Taiyo Yuden Full-Face Silver Printable 52x CD-R 
archival CDrs, guaranteed for 100 years (by Taiyo Yuden, not me...cough!), 
on our own releases like max effect, insect brain, space ritual naked, god 
and man, etc.
There are still some left on datawrite CDr's, which i intend to sell to 
people with short hair, but if you want the archival stuff, say so and i 
will burn to order.

They cost more than double that of  normal branded CDrs by-the-way.

What would we do without the Boffins.

I would just like to add that i am very very good looking.

REAL FESTIVAL MUSIC - RFM   http://www.realfestivalmusic.co.uk
 Festival CDs, Photo Reviews, Festival Listings, News, Healers


----- Original Message ----- 
From: "Stephen Swann" <swann at PLUTONIA.COM>
To: <BOC-L at LISTSERV.ISPNETINC.NET>
Sent: Sunday, March 02, 2008 2:51 PM
Subject: Re: CD-R quality (was Re: Shameless CDR vs CD questions)


> On Mon, Feb 18, 2008 at 12:51:41PM +0000, Paul Mather wrote:
>>
>> The data CD gets less data per sector because they use some of the raw
>> sector data for extra data integrity checking: it's more important
>> that you detect that the balance in your bank spreadsheet file has
>> erroneously changed than some audio samples in a frame.  The former
>> would be potentially catastrophic, whereas the latter would probably
>> be perceptually unnoticeable.
>
> ... except of course that audio CD error is often a lot worse if
> the physical disc is even slightly marred, and if I ever had a
> chance to time travel and chat with the people who made that
> decision about Audio CDs, I'd want to have a pair of iron tongs
> and a blowtorch with me.
>
>> (BTW, the main reason expensive CD players sound better than cheap
>> ones is due mostly to the better quality of the analogue components.)
>
> I'd agree with that ever since advanced error correction
> technology got cheap - what *used* to be the biggest difference
> was how well they coped with imperfect CDs...
>
>> It's not true that you can't make a bit-identical copy of an audio
>> CD.
> [...]
>> So, to make bit-identical copies, you need: a) decent CDDA extraction
>> software aware of the issues (e.g., EAC; cdparanoia; etc.), and b) to
>> calibrate your CD drive.  There are lots of tutorials on how to do
>> this, via a variety of mechanisms, on the Web.  (E.g., do a search for
>> "EAC sample offset".)  Some extractors, like EAC and dBPowerAMP
>> support AccurateRip, which lets you calibrate your drive with respect
>> to a database of known pressed CDs and even compare your rips with
>> others.
>
> I'd just like to note that I went to MIT and I found it difficult
> to get my head around all the ins and out of digital audio
> extraction - finally concluding that the effort-to-results sweet
> spot was somewhere around 99.8% certainty.  So be warned, it's
> not *quite* as simple to do this as Dr. Mather (an expert on the
> subject) makes it sound...  No offense Paul - I know you give us
> all more credit than we deserve.  ;-)
>
> Steve
>