HDTV > How does it work?

Aspect Ratio
You've probably heard a TV announcer say "this programs has been brought to you in HDTV." And you may already know that HDTV brings you a sharper picture and better sound than standard television. But it's when you really understand all that HDTV offers that you can truly begin to appreciate how much more enjoyable it makes your television viewing experience.

Fortunately, you just have to learn a few important terms in order to understand what HDTV is all about. Read on to learn everything you need to know about aspect ratio, pixels, resolution and Dolby® Digital 5.1 surround sound.

Aspect ratio describes the width of the TV screen in proportion to its height. When people talk about wide-screen TVs, they are referring to the 16:9 aspect ratio. Most HDTV programs are delivered in this widescreen format. A 16:9 aspect ratio fills more of your natural field of vision and creates a more cinematic experience. In comparison, standard TVs have an aspect ratio of 4:3, slightly wider than a square. In many instances images are cropped to accomodate your 4:3 screen, resulting in a loss of picture.

 

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