Digital noise reduction on TV - that is: appointment setting

Modern TV sets are significantly different from older models. Now it is not just a device for watching TV, and a full multimedia center with a lot of different functions and settings.

These include:

• Screen resolution. This is one of the most important characteristics of a TV receiver, which is responsible for the quality of the transmitted images. The most common is a 1920x1080 HD value, but there are models with a screen resolution Ultra HD 3840h2160.
• Frame frequency. It affects the quality of the movement of objects on the screen.
• Smart TV. Function significantly expands the possibilities of television. Due to the possibility of accessing the Internet, the user has access to a huge amount of media files.

ATAll models also have a wide range of different settings. This adjust image quality or audio signal that can be customized based on personal preferences. For example, digital Noise Reduction.

Configuration of digital noise reduction

Modern TVs allow you to view both videos from external media as well as from Internet. As a general rule, so that they do not take up too much space, and the download is faster, they are compressed to a small size. This leads to a deterioration in the quality of transmitted images and appearance of the so-called noise. Noises appear as a "snow" blurred image or mesh. This is especially noticeable when viewing the digital signal.

REFERENCE. To cope with this defect makes the noise suppression technology, DNR or its more modern version of the DNR 2D and DNR 3D.

types of noise

The most common are the following types of noise.

• "Salt and pepper". They are called so because of the fact that the picture they look like white and gray spots.
• pulse. On the picture there are white spots.
• Gauss. Image appears blurred and fuzzy.

Methods for noise suppression

different ways of noise reduction are used in television receivers.

DNR

Method based on the interim analysis video signal. It analyzes only those objects that are in close proximity to the camera.

REFERENCE. Technology mixes footage, due to which there is noise reduction.

Background also remains unchanged.

DNR 2D

Image analysis occurs in the spatial domain. However, a temporary direction is ignored.

In this method has a significant drawback. signal processing leads to the fact that the image loses its sharpness.

DNR 3D

Method It combines the comparing and mixing personnel and reduces the spatial noise. This technology analyzes each frame and eliminates all the artifacts and other defects. Due to this, the contrast and sharpness of the image increases. And each frame is processed several times.

REFERENCE. The technology allows to process all the information about the picture, which gives her the opportunity to eliminate noise like static and in moving objects.

3D DNR method combines all methods of suppressing noise and DNR DNR 2D and thus does not have their disadvantages.

How to configure the Digital Noise Reduction

To tune DNR, you must use the remote control to enter the picture settings. Then perform the following manipulation.

• In the settings you need to find a place in it and the DNR to select "Noise Reduction".
• Using the "up" buttons and "down" on the remote control, select the desired value. To picture had optimum quality, it is desirable to set the lowest value.

IMPORTANT! If the TV picture is worth a function of a PC or Game mode, noise reduction settings feature is not available.

With simple settings, you can remove the existing noise and to obtain an image of excellent quality.