choppy system sound beeps in Windows 7 and 8.1 guests

[Mihai Hanor]

You can test this by enabling Toggle Keys (accessibility feature), in Ease of Access Center, and then pressing one of the keys: Caps Lock, Scroll Lock or Num Lock.

Or you can use an ​Autohotkey script to generate such sounds (see the attached file).

Very short sounds are either not audible (<110ms) or unclear (<170ms), like they're cut short (see the Toggle Keys tones). When played in the host, such sounds are very clear, well defined (50-150ms). It might be something to do with the start of the sound being cut short. Long playing sounds (duration of seconds) do stutter, less regularly on my Windows host, but regularly on my Ubuntu host.

Host OS: Windows 8.1 x64, Ubuntu 14.04 x64 (PulseAudio).

[Mihai Hanor]

Windows 8.1 VM log

[Mihai Hanor]

Autohotkey script

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.