Recorded in 16bit/44.1 KHZ but playback in 24bit/96khz??

[Syan25]

Under Display properties...
 
Nvidia Geforce 9800 GT linked to my PCI Express slot 1.
 
Here is a question: In itunes - it says that I can select SAFE MODE - wav files only - does that mean I can't play ALAC files if I select the Safe mode...
Also I can choose other sampling rates- 88.2khz , 64khz and then 48 khz before getting to 44.1 khz...

 

[Roller]

You're going at it the wrong way.
 
Discreet gpus can cause dropouts and other issues due to their power management settings, throttling back the gpu when not in use. While it does lower the TDP, the energy fluctuations also adversely affect latency, and even more on XP as that OS is less able to handle those on-the-fly settings changes.
 
In your specific case, you should disable powermizer settings.
 
I'm not understanding why you're even considering waveOut output at all

 

[Syan25]

How would I alter powermizer settings then? I also did prioritize itunes in the Task manager to above normal setting - if that helps...

 

[Syan25]

I'm not wanting to choose that save option - its just that I watched a tutorial on how to optimize itunes playback and I saw that was selected - but I knew using Alac files - that would not be possible...
 
When I bought this Yulong D100 USB DAC - I read the reviews and was told that it was totally compatible with XP and Vista and 7 as well as Apple software...
 
since itunes playback at 24bit/96khz works fine through my soundcard (Audigy x-fi) to my Altec Lansing speakers  - I assumed it would be fine through a USB DAC too...
 

 

[Roller]

Users usually go to registry, create a few keys and change others, but for an easier access, you can download this standalone app that will do the trick: http://somemorebytes.com/wp/wp-content/plugins/download-monitor/download.php?id=1
 
Why do you use itunes and XP?

 

[Syan25]

So - over this weekend I tried various settings -
 
24bit/96khz - 100ms/200ms/400ms/800ms - all the same glitching problem after about 10 minutes
 
24bit/48khz - 400ms - I got twenty minutes of perfect playback before there was an issue ....
 
So clearly it isn't latency/ buffer settings. And on a lower sample rate - it works somewhat better...
 
I think it can't be the USB cable nor the Yulong D100. It seems to me that the issue is Windows XP (CPU) providing the USB output with a constant stable stream of data.
 
I shall look at the power options now - and also is there anyway I can set up BIOS to prioritize and be dedicated to that specific USB port that connects to the Yulong D100.

 

[Roller]

Have you disabled powermizer?
 
About the BIOS setting, there are too many types of BIOS for someone to be able to pinpoint that, but I don't recall seeing such option on virtually all BIOS I've used.
 
Things would go so much easier if you used Windows 7...

 

[Syan25]

Tks. I take your comments on XP and I do understand what you are saying - however I did buy this Yulong DAC D100 specifically for my desktop which is XP. My notebook - is Windows 7 but I am not going to use the YULONG which is rather big for portable use...
 
Anyway - I will use your link to do this disabling - but may I ask - what are the other PC effects by disabling powermiser - I have never heard of it before...
 
Some people are using powered USB hubs - to connect to their USB DAC - but I have also never heard of that before

 

[Roller]

Powermizer is a Nvidia power saving feature that throttles back core and memory clocks to more conservative values, as a gpu doesn't need to be used at 100% for regular windows usage, using less energy. The disadvantage of this is that the whole back and forth of gpu clocks tends to introduce latency spikes with various degrees of severity. By disabling the powermizer, the gpu works at a set clock config, no longer switching clocks as it sees fit, reducing or eliminating any latency issues the user has.
 
About usb hubs, as long as they're externally powered, there shouldn't be any issue. Not that I'm that big of a fan of the whole huge usb daisy chaining numbers.
 
If you didn't have the specs that you have, I wouldn't recommend windows 7, but your machine is more than capable of handling windows 7, and xp is actually limiting the performance you get from your hardware. Curiously, some people who still use xp do things exactly the opposite of what you do, having windows 7 on desktops and xp on laptops.
 
Seriously, shoot that dying horse that is xp and put windows 7 on your desktop, you won't regret it at all.

 

[Syan25]

OK. So in terms of disabling the powermiser - how would that affect the CPU - I am assuming that the GPU will be using more energy?

 

[Roller]

CPU isn't affected at all, it's GPU related only. Yes, it will use more energy, in the sense that it will only use energy amounts within the normal bounds your GPU already uses.

 

[Syan25]

Quote:

CPU isn't affected at all, it's GPU related only. Yes, it will use more energy, in the sense that it will only use energy amounts within the normal bounds your GPU already uses.

 
OK cheers but I get the impression that I didn't have powermiser installed in the first place - since when I tried to run the program you sent me to - it said there was no settings already made on register and that I would need to backup files - I really have no idea what settings I am supposed to make on their either...looks complicated and when it comes to things like that I am a novice...

 

[Roller]

You should have recent graphics drivers installed in the first place, some older drivers have buggy powermizer settings. Install these drivers first, test the audio performance, and if it's still not good, use the manager with the newer drivers.
Anyway, here's the link: http://us.download.nvidia.com/Windows/266.58/266.58_desktop_winxp_32bit_english_whql.exe

 

[Syan25]

You've been more than helpful! Cheers! I shall try this and test the audio before the end of the week again. Until then I am busy now - but I will try to figure this out in my spare moments during the next two or three days...
 
I will return with a post once I've tried it...I guess I will use full clock settings or maybe the next to max settings...yes I do watch alot of movies and play occasional games too besides audio listening and music editing

 

[Roller]

No worries, I'm glad to help

all the the sake of getting closer to audio bliss, be it listening, producing, or whatever audio contact you might have

 
I recommend you using full clocks, and having a clean computer without dust and good airflow. That way you'll be just fine.