Panasonic TX-24ASW504 Ehelp page 58

MPEG is an audio compression method that compresses audio to the
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smaller size without any considerable loss of audio quality.
Dolby Digital Plus and HE-AAC are the technologies for HD (High
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definition) programmes.
For DVB
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SPDIF Selection
(Auto / PCM)
Selects the initial setting for digital audio output signal from DIGITAL AUDIO
and HDMI2 (ARC function) terminals.
SPDIF is a standard audio transfer file format.
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Auto:
Dolby Digital Plus, Dolby Digital and HE-AAC multi-channel are output
as Dolby Digital Bitstream. MPEG is output as PCM. DTS is output as
DTS for video contents of Media Player / Network services.
PCM:
Digital output signal is fixed to PCM.
ARC (Audio Return Channel) is a function of digital audio output using
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HDMI cable.
For DVB or video contents of Media Player / Network services
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Media Player > Video mode > Audio output settings
Network > Videos > Audio output settings
SPDIF Delay
Adjusts the delay time of the sound output from DIGITAL AUDIO and HDMI2
(ARC function) terminals if the sound does not synchronise the image.
For DVB
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HDMI Input
(Digital / Analogue)
Selects to fit the input signal.
Watching > External equipment > HDMI features
Digital:
When sound is carried via the HDMI cable connection
Analogue:
When sound is not carried via the HDMI-DVI adaptor cable connection
For HDMI input
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