I am setting up an array of virtual machines with different versions of Windows for testing.
I am using VirtualBox and currently have an issue to get any sound when running a DAW (the JUCE Plugin Host and Reaper is what I am currently testing with) on Windows 7 Ultimate SP1 32bit and 64bit, testing with DirectSound and WASAPI in the guest and only have the option for DirectSound on the host OS (in the Audio Settings of the vm).
I think there is some detection for performance issues or jitter in the sound that automatically mutes it (if no track is playing I can hear the Windows sounds on changing the volume or on browsing the disk with the Explorer).
How do you usually go about audio testing in vm’s? Any specific setup or settings of the vm?