I installed ASUS Xonar HDAV 1.3A on Windows 7 Ultimate 64bit.
The audio is Popping like mad. Every sound, starts with a loud POP sound.
ASUS Audio Center is always set to: 6 Channels, SPDIF Out: Dolby Digital Live.
I checked: different SPDIF cables; coax connection; different Receivers.
And also Uninstalled, Restarted and Installed the drivers.
The popping is related to ‘Dolby Digital Life’ and ‘DTS Interactive’.
Stereo output (over Digital out SPDIF/Coax) doesn’t make a Pop-Sound.
I test using the Windows 7, Sounds Control Panel: selecting a ‘Program Event’ (with a Sound) and then clicking Test. Repeating this procedure, with different ‘Program Events’, produces a Pop-Sound in about 1 in 5 clicks.
I also noticed between ‘Program Event’ sounds, the Receiver switched to PCM 48Khz, while playing a Sound the Receiver switches to Dolby Digital 5.1 (which is correct). On another PC, with a DX, the Receiver doesn’t switch to PCM in-between sounds, just shows no signal.
Also noticed (hidden devices): 'MS Streaming Clock Proxy', NS Streaming Quality Manager Proxy', MS Streaming Service Proxy', 'Microsoft Trusted Audio Drivers': code 45
At the time the DX was installed, on Windows 7 64 bit, there were no popping-sounds.
Also the onboard SoundMax audio didn't POP.
DVB Viewer: Output AC3Filter Dolby 5.1; switching Channel: POP
Windows Internet Explorer: clicking on link: POP; Sometimes the "Start Navigation" sound can't be heard, but only the loud POP.
Winamp: Playing a wave file: POP (starting Winamp from Explorer: POP; Closing Winamp: POP).
Cyberlink: switching audio tracks POP; between chapters POP
Please contact me, if you need more information or tests.