Panasonic TC-55AS530U - Manual (Page 116)

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Preferred audio type
(
Main Audio/Hearing Impaired/Visually Impaired)
Allows setting of the accessible audio format when its broadcast and the
language setting matches.
Digital audio out selection
(
Auto/PCM)
Selects the initial setting for digital audio output signal from DIGITAL AUDIO
OUT and HDMI 2 (ARC function) terminals.
Auto:
Dolby Digital Plus, Dolby Digital and HE-AAC multi-channel are output
as Dolby Digital Bit stream. MPEG is output as PCM.
PCM:
Digital output signal is fixed to PCM.
● For video contents of Media Player / Network services.
● ARC (Audio Return Channel):
A function of digital audio output using HDMI cable.
HDMI input (HDMIx in)
(
Digital/Analog)
The default setting is Digital for the HDMI connection. (Digital input signal)
Select audio input terminal when a DVI cable is connected along with an
analog audio input signal.
: indicate number of terminal
Reset to defaults
Resets all Audio adjustments to factory default settings.
● Gray-out when using Home Theater.