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32 HP HDTV User’s Guide
■ Virtual Surround selects an option for
emulated surround sound from the TV speakers.
“Selecting virtual surround sound” on page 32.
■ Speaker turns the TV speakers on or off. You
may want to turn off the TV speakers when you
connect an optional external sound system. Refer
to “Understanding audio output” on page 32.
Choosing the digital audio output mode
You must be watching a digital TV channel to access
the Audio menu Digital Audio option. This option sets
the format for the signal provided on the Digital
(Optical) Audio Output connector on the rear of the TV:
Dolby Digital or PCM. Select PCM if your external
digital audio system does not support surround sound.
For more information, see “Understanding audio
output” on page 32.
Selecting virtual surround sound
You can enjoy emulated surround sound from the TV
speakers. To do so, in the Audio menu Virtual Surround
option, select the mode that you want to hear:
Theater or Music Hall.
Understanding audio output
The input source signal and the Audio menu settings
for Digital Audio and Speaker determine the type of
audio output that you hear at the speakers, or at the
external sound system connected to the TV.
For example, if you connect an external sound system
by using the Digital (Optical) connector, you hear
digital sound from the connected external audio system
when you watch a digital TV program. The format of
digital signal that the TV provides depends on the
Digital Audio setting (Dolby Digital or PCM).
This TV does not support Dolby Digital audio input over
HDMI. When connecting a set-top box, DVD player, or
other device by means of HDMI, set the device audio
output to PCM format.
The following table shows the audio output
dependencies and the resulting output.
Input source
Audio output at
TV speakers
(Audio menu/
Speaker: On)
Audio output at Digital
(Optical) connector: (Audio
menu/Digital Audio)
Audio output at
Analog L and R
connectors
TV tuner, analog channel Stereo 2-channel PCM Stereo 2-channel
TV tuner, digital channel Stereo 2-channel PCM or Dolby Digital Stereo 2-channel
HDMI, PCM format Stereo 2-channel None Stereo 2-channel
HDMI, Dolby Digital
format
None None None
Component Stereo 2-channel PCM Stereo 2-channel
AV (S-Video or Video) Stereo 2-channel PCM Stereo 2-channel
PC Audio Stereo 2-channel PCM Stereo 2-channel