Chapter 4: Configuration
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must have an external Dolby Digital/DTS decoder along
with a SPDIF-compliant sound card to make this selection
available.
Note: If the SPDIF audio output is enabled, the volume control for
PowerDVD will be disabled as your decoder assumes the task.
• The 4 Speaker selection is for computers equipped with
sound cards which support 4-ch output.
• The 6 Speaker selection (a.k.a. 5.1 channels) is for computers
equipped with sound cards which support 6-ch output and is
optimal for DVD Video titles that feature multichannels
encoding such as Dolby Digital 5.1 or DTS 5.1.
• The 7 Speaker and 8 Speaker options are available for users
who have multiple speakers and wish to output audio to
each of them.
2. The following selections will only be available depending on
your selection in the Speaker Environment section.
• The major difference between Dolby Surround Compatible
Downmix and Stereo is that Dolby Surround uses the Dolby
Surround downmixing algorithm and the possibility exists of
connecting an analogue Pro Logic decoder to the sound card
so as to enable 4-ch surround sound (left, right, center,
surround) for Dolby Surround. Otherwise, both are relatively
similar in 2-channel output. For more information, see
Miscellaneous on p.69.
• Dolby Headphone is a post-processing effect designed to
create a virtual surround sound experience particularly for a
headphone environment but is suitable also for both
notebook and desktop environments. For more information,
see Dolby Headphone (Optional) on p.71.
• The CyberLink Headphone option uses technology
developed by CyberLink to improve the quality of audio
output from a notebook over headphones. The Advanced
options simulate the very different experiences of listening to
sound in a well-damped Living Room, a small Theater, or a
large Stadium. For more information, see CL Headphone on
p.72.
