[vox-tech] update on the audio CD problem

[Micah J. Cowan]

On Fri, Jan 27, 2006 at 04:05:23PM -0500, Peter Jay Salzman wrote:
> On Fri 27 Jan 06, 12:50 PM, Bill Kendrick <nbs at sonic.net> said:
> > On Fri, Jan 27, 2006 at 05:06:09AM -0500, Peter Jay Salzman wrote:
> > > Digital extraction is where the cd is read, and the signal gets pumped
> > > through the ATA port to your speakers.  This is more efficient from the
> > > CPU's standpoint.
> > 
> > Woah, I would think this is way LESS efficient.
> 
> No.  The CPU is involved in many read-copy operations when the signal passes
> through the sound card.
> 
> AFAIK, the north and south bridge use DMA during digital extraction.

Pete, I'm pretty sure that the CPU isn't even /involved/ with analog
mode. It's analog. There is no read/copy. There's nothing to read/copy.

-- 
Micah J. Cowan
micah at cowan.name