Re: digital sound processing for windows sounds not wanted
From: Chris P. [MVP] (msdn_at_chrisnet.net)
Date: 12/09/04
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Date: Thu, 9 Dec 2004 09:57:59 -0500
On Wed, 8 Dec 2004 22:20:30 -0500, James W. Long wrote:
> Dear Chris:
>
> Thank you for comming back to me. I apreciate that this is OT and you
> still came back. Thanks for your time. I admit I am totally unfamilar with
> this
> specific aspect of the soundcard(s), no sound card I ever had ever
> used the digital output mode, actually it appears to be inside windows
> because windows is doing all the digital output processing, as I can see
> it happening in my task manager when sounds play.
>
> I dont use the SP/dif jack, so I am talking about the stereo ouput jack.
>
> I'm not seeing such a checkbox, either.
>
> Basically I want windows sounds NOT to be
> reconverted to digital on the output jack
> of the soundcard,. and the same for cd audio.
>
> both of these currently affected by actions done
> in windows like clicking an icon or saving a file,
> anything wich utilizes CPU, because the cpu
> quits processing digital output long enough to
> do something else then gets back to the digitl
> out and tries to catch up, then skips a few
> hundred bytes etc.....and by that time
> forget it, the tune is hosed.
>
> currently all playback uses the cpu to process
> and that can bee seen in my task manager as
> 25-30 percent for an mp3 and 40 percent or so
> for an audio cd. All windows sounds too!
>
> I am not getting wave sounds as wav sound,
> All sound output is being hi-jacked by this
> cpu digital processing-thing
> which cant go fast enough.
>
> seriosly speaking thats not quality.
> Its not for me.
> It's signal is lower volume too.
> it can not keep up when the cpu is needed
> elsewhere. Even my windows logon sound gets
> munged over logging on, Chris.
>
> mun'jed - a higly technical term, meaning
> fubar,fried,toast,history,dust,mist,wind,zoned,laterd and wasted.
>
> What I'm looking for is the way to put it as it was,
> so that analog is present on the output jack,
> and so no cpu is necessary to hear an audio cd
> and windows sounds dont get interrupted by
> operations.
>
> I'm just having difficulty understanding what I have
> to do to make it that way again.
>
> Is there some registry setting,config,etc?
> kill the driver?
>
> I hope I have helped to make it more clear for you,
> I dont know the correct terminology or even
> pretend to understand the processes involved, so I can
> only describe the effects I experience and see and hear.
Well if you're talking about the stereo output jack, it's output will
ALWAYS be analog - period. The internals of the sound card will always be
digital - period. Digital audio CD playback normally uses only a couple of
CPU points and isn't affected by file copies etc, there is something else
going on here.
But what seems to be happening here is there is some HQ (maybe surround)
process running on your machine that is preprocessing the data stream.
Most likely it got installed with the drivers you were discussing
originally. I'm not sure how to remove it as I'm not familiar with the
product, but as you have installed a new sound card it might be a good idea
to try and disable the on-board sound in the bios. Uninstall any system
driver packages that may have been installed.
Installing your system clean would probably fix this, but I would try the
above before resorting to that.
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