Samsung LT27A750ND-ZA - Manual (Page 46)

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English
● Digital Noise Filter ( Off / Low / Medium / High / Auto / Auto Visualization ):
If the broadcast signal received by your TV is weak, you can activate the Digital
Noise Filter feature to reduce any static and ghosting that may appear on the
screen.
N
When the signal is weak, try all the Digital Noise Filter options until the TV
displays the best picture.
Auto Visualization : Displays the signal strength of analog channels.
N Only available for analog channels.
N When the bar is green, you are receiving the best possible signal.
● MPEG Noise Filter ( Off / Low / Medium / High / Auto ): Reduces MPEG noise
to provide improved picture quality.