CD size vs time

Why does a CD limit audio to 80 minutes when the actual size is 700MB? I
would love to dump some audio books to CDs.

Hi,

Terry schrieb:
> Why does a CD limit audio to 80 minutes when the actual size is 700MB? I
> would love to dump some audio books to CDs.

AFAIK data discs keep some "reserve" on each disc if some defective
sector is recognized while writing on it while audio discs don't.

CU,
Mészi.

Terry (terry@myaol.com) in e9ciYMMAJHA.3756@TK2MSFTNGP03.phx.gbl:

> Why does a CD limit audio to 80 minutes when the actual size is
> 700MB? I would love to dump some audio books to CDs.

The specification ("Red Book", if I remember correctly) says 650 MB. Later
larger capacities (even beyond 700 MB) became available by extending the
usable surface.

If you have the hardware and software that support it, you can allow
"overburning" to use that extra surface.

I haven't watched the development. I'd assume that DVD had replaced CD, and
that Blu-Ray is about to succeed DVD.

--
Chris Laarman

Daniel Meszaros (spam@meszi.de) in
5kdnn5-vt6.ln1@meszaros.user.individual.de:

>> Why does a CD limit audio to 80 minutes when the actual size is
>> 700MB? I would love to dump some audio books to CDs.

> AFAIK data discs keep some "reserve" on each disc if some defective
> sector is recognized while writing on it while audio discs don't.

I think that you talk about "packet writing" (like UDF), as opposed to
writing all data (whether music or not) in one block:
http://en.wikipedia.org/wiki/Packet_writing.

That is a matter of how to use whatever space is available, but the question
addressed how much space is available at all. :-)

(In my experience UDF is a waste of usable space, some 20% overhead. But it
may sometimes be useful despite this.)

--
Chris Laarman