Panasonic TH-43DS630U E-Manual page 63

= Note =
If the stereo signal is poor or the receiving conditions are not optimum or if
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STEREO:MONO automatic switching occurs, it is recommended to switch
from STEREO to MONO.
Selected mode is not affected when the contents of the receiving signal
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change.
When the receiving conditions deteriorate, listening will be easier if the
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mode is set to the MONO position pressing the Sound Selection button.
DUAL, also known as DUAL MONO or as BILINGUAL is not currently
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transmitted in some countries.
Digital Audio Preference
(Dolby D / MPEG / HE-AAC)
Selects the initial setting for audio tracks.
Dolby D:
The priority is given to Dolby Digital.
MPEG:
The priority is given to MPEG. (Australia only)
HE-AAC:
The priority is given to HE-AAC. (New Zealand only)
Dolby Digital is the method of coding digital signals developed by the
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Dolby Laboratories. Apart from stereo (2ch) audio, these signals can also
be multichannel audio.
MPEG is an audio compression method that compresses audio to the
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smaller size without any considerable loss of audio quality. (Australia only)
HE-AAC is a perceptual coding method used to compress digital audio for
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efficient storage and transmission. (New Zealand only)
Not valid in Analogue TV
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