Re: [TCLUG:12423] CD writing software....

[David Carter <dcarter@visi.com>]

On Mon, Jan 17, 2000 at 08:03:24PM -0600, Callum Lerwick wrote:
> > way to burn discs with the copy-OK flag set, or pre-emphasis set), as well as
> 
> What do those do...

These are the flags which can be set individually for each CD track:

DATA:	If set, this is a data track and won't be played on an audio CD player
4_CHANNEL: If set, this track has 4 channels of audio.  Regular CD players
	will play back the front two channels by default.  I don't know if
	there are any CD players which would play all four, but it's
	possible that some car players would.  (They already have four amps
	for four channels, but I don't know...)  This is hardly ever used.
COPY_PERMITTED: This will allow infinite copies to be made on DAT, Minidisc,
	and any other equipment which obeys the SCMS (Serial Copy Management
	System) copy protection standard -- copies will be marked as
	infinitely copiable instead of NO_COPY.  Without this, you usually
	can't make a second generation copy.  Most commercial CDs have this
	bit unset.
PRE-EMPHASIS: If set, the audio has been processed by a pre-emphasis filter,
	and the matching de-emphasis filter in the CD player should be
	activated.

If you want to know more about these, ask away.

	David

-- 
David Carter ** dcarter@visi.com
Network Engineer -- VISI.com
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