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Topic: Internal Clockrate Problem (Read 2677 times) previous topic - next topic
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Internal Clockrate Problem

Hi,

At the moment I'm building a HTPC so I can record my favorite shows, watch dvd's, play music, ... . Everything is working out great but a couple of days ago I stumbled on a problem. I was happily watching a DVD while suddenly there was a pitch change in the sound (lower pitch), at first I didn't know wtf happened but suddenly it hit me that my PVR-software was also recording a show.
So I guess the following happened : WINdvd was playing the movie with the internal clock set to 48kHz when suddenly my pvrsoftware began recording a movie and must have thought is was a good idea to set the internal clock to 44,1kHz causing all the sounds coming from the soundcard to shift down in pitch.

Now I've got a couple of questions :
- What can be done to prevent this from happening? simple queston huh
- Why does my pvrsoftware actually need to use the soundcard as all it has to do is capture tv through a PVR150 (hardware mpeg encoder mind you) onto disk. I guess I'm a bit baffled as why it would route the sound through the soundcard for capturing when the captured data is not directly played.
- Could a solution be to activate (currently disabled in bios) my onboard, super deluxe craptacular, ac97 soundcard to record shows while using my terratec aureon space to play sounds? The idea is to let my pvrsoftware change the internal clock of the ac97 to whatever it wants while not touching the terratec's internal clock because it may be playing something.

Internal Clockrate Problem

Reply #1 –
Nobody got any ideas on how to solve this?

Internal Clockrate Problem

Reply #2 –
Ok let me simplify my question : if I would install a second soundcard do I get 2 separate internal clocks or does a windows-system somehow have one internal clock through it's mixer?
I'd just like to know in advance how things will react if I'd install the second soundcard because I don't feel like reinstalling this machine (and yes I do backup but it's just a hassle putting it all back  ).

Internal Clockrate Problem

Reply #3 –
Using the AC97 onboard chipset, or another soundcard should solve the problem.
 

Internal Clockrate Problem

Reply #4 –
Thanks for the reply, I'll give it a whirl.