On 5/9/06, Harald Arnesen <[EMAIL PROTECTED]> wrote:
"Daniel da Veiga" <[EMAIL PROTECTED]> writes:
>> You don't need the audio-cable to hear music from a cd - just the right
>> application ;)
>
> Oh yeah, you really don`t need the cable, it just makes things easier,
> because it will work with all applications, won`t send data using the
> system bus neither process it using the CPU, the CD drive will do all
> the work and send output directly to the soundcard, the volume manager
> of the soundcard with the "CD audio" label will work and some other
> benefits.
>
> But that`s just me. I want my hardware to do the stuff it should.
With a cable, you will (at least with some/most sound cards) have a
digital-analog conversion in the drive, an analog-digital conversion in
the sound card, and another digital-analog conversion on output from the
sound card.
With digital extraction you will just have the last digital-analog
conversion. Guess what sounds best.
A third option: most drives have a digital output connector, and most
sound cards have a digital input connector.
--
Wrong. Sound is by nature analog. The soundcard does nothing, as the
CD drive reads the digital audio and the DAC of the CD drive itself
converts it to analog, passing it directly to the soundcard, that send
it right to the speakers with a little amp or not. As the DAC of the
CD drive has nothing to do anyway, that is hardware doying what it
should.
Check it:
http://img.tfd.com/cde/DIGAUDEX.GIF
If you get the data digitally, you CD drive sends it directly, over
the system bus/digital cable, and your CPU/Soundcard PU must convert
it to analog audio (because your speakers still can't do it (at least
mine), with most modern boards and on-board audio cards, the soundcard
uses the CPU, so, yes, it uses a few cycles. I really don't care how
much, all I can say is that there's one more Interruption Request, and
I like my FPS at top.
--
Daniel da Veiga
Computer Operator - RS - Brazil
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