Asus Xonar U3 - Manual (Page 37)

31 ASUS Xonar U3
Q4: Why do I need Dolby Headpone for PC games?
Answer:
1. Dolby Digital and Pro-Logic IIx are available on the latest game consoles,
like XBOX360, PS3, and Wii. Dolby can provide the best gaming sound
experience and compatibility with home theater or TV systems.
2. Dolby Headphone and Dolby Virtual Speaker are the best 3D sound
positioning, spatial modeling and 5.1-channel virtualization technology for
regular stereo headphones and speakers.
Q5: What is the most important benefit of the Xonar U3 for gamers?
Answer:
1. Headphone amplifier: Enables accurate sound positioning in superb quality
for unparalleled gaming experience.
2. Dolby headphone: Delivers a realistic and spacious 2-to-5.1 surround and
3D positional sound field over any set of stereo headphones.
3. GX 2.5: Enables the latest EAX gaming audio and restore surround gaming
in Windows Vista/7 without additional software.
Q6: Will PCM sound output through S/PDIF be just 2 channels even with
different analog output channels?
Answer:
The S/PDIF protocol specification (IEC-60958) can only carry 2-channel PCM
data or non-PCM AC3/DTS data. So, when a user selects PCM output for S/PDIF,
the Xonar sound card will always deliver 2 channel PCM data through the S/PDIF
output port.