Re: [ARSCLIST] CD-R question

[Jerry Hartke <jhartke@xxxxxxxxxxxx>]

Philips has published Orange Book specifications for CD-R media. It is
available from them but is expensive. There are no equivalent public
standards. Public volume and file structure standards are published as ISO
9660 and UDF. These are standards for "interchange" that may be interpreted
as playability.

There is no published specification for write or read drives. Thus, if a
disc fails write or read, and meets all specs, then the drive is at fault.
If the disc does not meet specs, then it is the fault of the media.

This is rather simplistic, but does work. Information on our web site at
http://www.mscience.com/ references standards, our publications, links, and
has many FAQs.

Jerry
Media Sciences, Inc.

> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:ARSCLIST@xxxxxxx] On Behalf Of carlstephen koto
> Sent: Saturday, January 05, 2008 2:08 PM
> To: ARSCLIST@xxxxxxxxxxxxxxxx
> Subject: Re: [ARSCLIST] CD-R question
> 
> It's difficult to separate quality from playability.  Just where
> along the continuum of quality one decides if a media is playable is
> a standard that seems to be left to the discretion of the
> manufactures. It would seem that publishing spec.s for recording
> media would be in order. Otherwise professional users are left to
> trial and error/word of mouth to determine the quality of the media.
> Regarding the storage of less demanding program material, I don't
> think anyone can accurately anticipate the needs of future users. 33
> 1/3 lp users are continuing to discover subtle sounds that have
> remained buried under the noise floor of replay equipment, which
> (even when inaudible) influence the playback and adds to the
> listener's enjoyment. While this may not seem relevant to recording
> of say, the spoken word, these weren't recorded in a vacuum.
> Somewhere in those recordings are the acoustic imprints of the hall.
> And digitally mapping famous acoustics have become important to
> recording studios recently. Of course, this is just a wild guess on
> my part. But I hope you can see my point.
> Here's an interesting link to examples of acoustic sampling called
> Speakerphone. The video tour is fun, try it with headphones.
> http://www.audioease.com/
> On Jan 5, 2008, at 7:39 AM, David Lennick wrote:
> 
> > Incidentally, the original question re 90-minute CDs was from
> > someone who wanted to put 90-minute radio programs (downloaded) on
> > them for convenience. Audio quality may not be an issue, but
> > reliability and playability I presume are the issues, no? Either
> > they play or they don't.
> >
> > dl
> >
> > Howard Friedman wrote:
> >> Richard,
> >> I thought the point was, can one get 90 minutes or more audio on a
> >> CD, which one can with a Jukedisc.  As to quality, that's a whole
> >> different ball game!  As for myself, everything I put to jukediscs
> >> are 78s from 1900 to 1950, so quality becomes a rather personal
> >> thing.
> >> Howard