Samsung QET 85" Class 4K UHD Commercial LED Display - Manual (Page 71)

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Sound
2nd 3rd Description
Sound Mode You can select a sound mode to suit your personal preferences.
" This function is disabled when Sound Output is set to External or Receiver (HDMI) .
Balance Adjust speaker volume levels for sound balance optimization.
" This function is disabled when Sound Output is set to External or Receiver (HDMI) .
" Available functions may differ depending on the model.
Equalizer Adjust the equalizer to customize the volume and pitch, and enhance the richness of the sound output.
" Available only when Sound Mode is set to Standard .
" This function is disabled when Sound Output is set to External or Receiver (HDMI) .
HDMI Sound Select whether to hear from AV(HDMI) or PC(DVI) .
" Models without the AUDIO IN port are not supported.
Sound on Video Call Select sound output to listen to during a video call.
" Models without the AUDIO IN port are not supported.
Digital Output Audio Format Select the digital audio output format. The Dolby Digital+ option is only available via HDMI(ARC) for external devices that
support the format.
" This function may not be supported depending on the model.