Windows 10: Wasapi exclusive mode with external hardware - the event driven callback time changes...

I've got a simple program running in Windows 10, that allows connection with a hardware device. The hardware device is a DJ controller, connected via USB to the laptop, and the hardware supports WASAPI mode.Sine tone audio is sent to the device via WASAPI exclusive mode, using event driven buffering. The callback buffer size is set to 160 samples, and sample rate is 44.1kHz 160 / 44100 = 3.6 msecs callback time.If I use my program to output to the laptop speakers, the audio processing works fine for hours. However, if I connect to the external hardware the DJ equipment via USB in this case

:)

 

WASAPI Exclusive Mode Not Working

Coming here as a last resort before I format and reinstall Win 10...

I have a GTX680 which is connected to my Yamaha RX-V681 receiver, up until now I had it set up with PotPlayer and with DTS Passthrough enabled in the player.

Today I did a fresh reinstall of PotPlayer to re-setup SVP and since then, no matter what I tried I cannot get WASAPI Exclusive mode to work. I have verified that the Exclusive settings are enabled in the windows playback devices, tried several different audio renderers (ReClock, built in WASAPI) but I am still in shared mode, the windows mixer still controls the audio that's coming out of the player to the AVR.

Before this, it was working perfectly. All I did was uninstall and reinstall the player and filters, and I cannot get it to work. I tried MPC-HC as well, and same issue.

Help please.

Thanks

 

WASAPI Exclusive Mode Not Working

Hi there

Taken from this web page ...
Announcing Windows 10 Insider Preview Build 14986 for PC - Windows Experience BlogWindows Experience Blog

Windows 10 Insider Preview Build 14986 for PC

Some things that we are already aware of:

Our class driver does not support ASIO
Our class driver does not work in WASAPI exclusive mode in certain applications

For the most recent information on USB Audio in Microsoft Windows, see ..
Installing the Microsoft class driver(s) for USB Audio devices – Matthew van Eerde's web log

Hope this helps

 

Cortana issue with WASAPI

Hi everyone, it's my first hours of using Cortana when I found it don't work with WASAPI.

Issue: When the audio device is being used exclusively, Cortana cannot open any apps.

In my case, I used MPC-HC with reclock using WASAPI exclusive output. I told Cortana to open "This PC" for me, but it stuck on the screen with Staring XXX and those little balls keep flying under the icon. I can click on the icon and the program is opened,
but this isn't what I wanted.

I understand Cortana cannot respond vocally, but shouldn't she continue the command even audio device is being used? It there any fix for this? (Don't tell me to give up WASAPI )