Resource Center: How to Speak A/V
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Entries starting with: native resolution: The picture resolution, usually expressed in horizontal by vertical pixels (such as 1,024 x 768), that a TV or other display device is inherently capable of without making use of line doubling, line interpolation, or other forms of rescaling. In a fixed-pixel display like a plasma, LCD, or DLP TV, the native resolution is the same as the actual pixel layout. negative feedback: see feedback. neutral density: Commonly denoting filters that dim the amount of light reaching a camcorder’s image sensor without changing the balance of colors. noise reduction (NR): A system designed to reduce the noise added to a signal during recording or playback. noise: Any unwanted signals that are not strongly correlated with the desired signal and that usually arise from a random process. Hiss and hum are typical examples of audible noise. In video programs, noise appears as “snow” onscreen or graininess in the image. noise shaping: A digital signal processing technique used in digital filters, analog-to-digital converters, and digital-to-analog converters that reduces quantization noise at the frequencies where it is most audible, at the expense of increasing noise at other frequencies. nonvolatile memory: A type of digital memory circuit that does not lose its data content when the power is removed; see flash memory. NTSC (National Television System Committee): The industry/government body that issued the U.S. analog color TV standard approved by the FCC (Federal Communications Commission) in 1953; any video signal or component that operates according to that standard. Abbreviations |
