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Unable to change WDM-KS sample rate #159
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The log suggests WDM-KS is not working at all:
It looks like the input and output devices you are using,
As explained in the FAQ, WDM-KS is unlikely to work when pointed to the default Windows audio devices, as that usually means the devices are already in use. WDM-KS usually cannot open devices that are in use. Does it work if you change your default audio devices to something else in your Windows audio settings?
As far as I can tell WDM-KS is not working at all, period. Most likely it's REW misleading you - the backend did not actually change and you are still using the previous backend you were using, not WDM-KS. |
In the log above, I did not start the generator or the input recording. I just opened REW and configured the devices. I will try changing the default audio devices. I am pretty confident that REW is using WDM-KS, as the SINAD measurements do change when only changing the backend. I can do another log with generator and input working if that helps. |
A log of WDM-KS actually working would be interesting to see, yes. |
OK, here is a new log with both input and output working. Changing the default devices did not seem to help. |
You are correct - it is indeed successfully running WDM-KS:
It's surprising that WDM-KS works when streaming but not when probing for sample rates. I will have to take a closer look when I have some time. |
@GoldenSound reported the same problem in #178. It seems to affect devices using WaveRT-based drivers regardless of the ASIO Host Application (I was able to reproduce in FlexASIOTest). The underlying cause appears to be the PortAudio WDM-KS backend being unable to open streams with |
After some more experiments it looks like I was slightly off on the trigger - it's not |
This is fixed in FlexASIO 1.10. |
When using FlexASIO within REW, the sample selection goes blank when selecing WMD-KS. All other modes appear to work. When using WMD-KS, the audio input/output continues to work, but the sample rate remains on the last used rate and is no longer selectable. I have attached my log after REW startup as well as the PortAudioDevices output.
More Info
https://www.avnirvana.com/threads/flexasio-and-wmd-ks-sample-rate-selection-disappears.11015/[](url)
FlexASIO.log
PortAudioDevices.txt
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