SOUND VOLUME ADVANCED SETTINGS
Smart è Setting è Volume è Screen/Sound sync control
When synchronizing of picture and sound on TV screen is not matched, the viewer can directly adjust
the sound sync.
User can adjust video’s sync and sound output (TV speaker or SPDIF) when turning screen/sound
sync control “On.”
DID YOU KNOW?
Since the introduction of HDTV it is not uncommon to notice very obvious terrible lip synch on screen.
These incidents mostly occur during advertisement breaks. Reason being that HDTV requires more
processing than its predecessor analog broadcast, the audio portion of the signal having remained
virtually the same, now, in HD mode some segments have the voice coming across faster than the
image causing bad lip synch effect.
Most broadcasters and some advertisers quickly adapted by forcing the sound signal segment through
a delay process so that both synchronized picture and sound appear at the same time on screen.
Should this obvious lip sync situation only be noticeable here and there and mostly on some older
advertisements and definitely not always, do not adjust your set. Again, some producers have not yet
fully understood the move to digital TV and therefore haven’t adapted the process of introducing some
delay to their products’ audio track.
- [Vary with the model] Adjust sync of sound that is outputted from TV’s internal speaker. Speed up
sound output when moving cursor towards minus sign (-), delay sound output when moving towards
plus sign (+).
- Control sound sync from external speakers such as LG Home Theatre System, headphone or Surround
Sound System connected to optical digital audio output terminal. Speed up sound output when moving
cursor towards minus sign (-), delay sound output when moving towards plus sign (+).
- Matches video signal on screen and sound from external audio device to perfect synchronism without
any video or audio delay. Again, depending on how long it takes to produce the image on screen the
audio signal may jump ahead by a fraction of second and create this very awkward viewing experience.
SHOULD THIS ISSUE STRICTLY BE DETECTED WHEN VIEWING/STREAMING DOLBY ATMOS CONTENT, PLEASE REFER TO FOLLOWING:
For any individual still experiencing asynchronous audio video (lip sync) issues on their 2017 LG Smart TV from hooking up peripheral device to the television and viewing 4K content material, please ensure TV software has been updated to latest version (04.70.07) or greater.
Should the issue persist further to have updated to latest software version, please contact LG Call Centre at 1.888.542.2623 and formulate your predicament with as much detail as deemed possible so that we may alert software engineers to have them resolve the issue as promptly as possible.
Your patience and comprehension in this matter are greatly appreciated,