More > JRiver Media Center 21 for Windows
WASAPI and Windows sounds
DocLotus:
--- Quote ---I'd strongly suggest updating the driver from Realtek.
--- End quote ---
They are the latest. Have been working well otherwise.
Jim, suggested this...
--- Quote ---Try setting up WDM again.
--- End quote ---
Do you know if there is anything else I need to do here? Other than select it from the Windows sound dialog?
glynor:
Maybe their current ones are buggy then. Might need to try some older ones.
When WASAPI Exclusive isn't releasing the lock like that, it is usually the driver. I've seen it myself with Realtek audio outputs.
It could also be that something is playing silent audio through the WDM driver....
DocLotus:
Thanks for the feedback.
WASAPI plays fine with Exclusive Access unchecked if that makes any difference.
By the way, I've noticed that WASAPI Exclusive Access turned on plays loader than with it off; why is that?
What is the quality difference between Exclusive Access on vs. off?
RoderickGI:
Now you are back to the Wiki article on Exclusive Access: http://wiki.jriver.com/index.php/Exclusive_access
See the section titled: "Issues with Disabling Exclusive Access in WASAPI"
In particular, this paragraph:
If you disable Exclusive Mode in WASAPI on Windows, then you must set Media Center's Output Format DSP to resample all audio to match the format you have selected as the Default Format for the audio device. In WASAPI non-Exclusive mode, the Windows Default Format setting now becomes the only output setting that MC can use, and you must resample all other formats to match this format.
That doesn't quite explain why you aren't getting sound out of YouTube etc., but it make the audio chain more complex, and there could be a problem in the configuration of MC DSP and/or the WDM or RealTek default audio settings. With non-exclusive mode the audio chain is something like:
YouTube > Windows Sound > WDM Driver > MC Audio incl. DSP > Windows Sound > RealTek Driver > Windows Sound > Speakers
I don't know how often or where Windows Sound actually kicks in, I'll leave that to the experts, but it could be as bad as that! I'm a little out of my depth in this area. Perhaps some expert in this area can advise.
--- Quote from: DocLotus on August 12, 2015, 03:54:47 pm ---By the way, I've noticed that WASAPI Exclusive Access turned on plays loader than with it off; why is that?
--- End quote ---
Because with Exclusive Mode off, Windows Sound can change the audio as it sees fit. So it is at least reducing the volume, perhaps when down mixing, and probably changing the Bitrate and Sampling Frequency.
The disadvantages of non-exclusive mode were the reason I was happy to compromise and effectively lose short Windows sounds, like the Ding, etc. when using the WDM Driver.
DocLotus:
Ah, thanks for the feedback.
--- Quote ---Now you are back to the Wiki article on Exclusive Access: http://wiki.jriver.com/index.php/Exclusive_access
See the section titled: "Issues with Disabling Exclusive Access in WASAPI"
--- End quote ---
Read that yesterday... most interesting.
I'll re sample all my audio.
Right now I'm running with Exclusive Access off so I can get other windows sounds.
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