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Composite video is an baseband analog video format that typically carries a 405, 525 or 625 line interlaced black and white or color signal, on a single channel, unlike the higher-quality S-Video (two channels) and the even higher-quality YPbPr (three channels).
Time base correction (TBC) is a technique to reduce or eliminate errors caused by mechanical instability present in analog recordings on mechanical media. Without time base correction, a signal from a videotape recorder (VTR) or videocassette recorder (VCR), cannot be mixed with other, more time-stable devices such as character generators and video cameras found in television studios and post ...
In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal. A common example is the conversion of a sound wave to a sequence of "samples". A sample is a value of the signal at a point in time and/or space; this definition differs from the term's usage in statistics, which refers to a set of such values ...
Each of these steps is subject to deliberate or unavoidable loss of quality. To retain that quality in the final image, it is desirable to eliminate as many of the encoding/decoding steps as possible. S-Video is an approach to this problem. It eliminates the final mixing of C with Y and subsequent separation at playback time.
This, as mentioned, is how the NTSC field refresh frequency worked in the original black-and-white system; when color was added to the system, however, the refresh frequency was shifted slightly downward by 0.1%, to approximately 59.94 Hz, to eliminate stationary dot patterns in the difference frequency between the sound and color carriers (as ...
Like competitor TVI, SIC does not broadcast many international TV-series during prime-time. It was the second most watched channel for 13 years (save for 2007, 2009, and 2010 when it was at third place) until 2019, when it overtook TVI for the number 1 position. Prior to that, SIC was number 1 from 1995 to 2004, breaking RTP1's long-standing lead.
The rest of the article is a list of formulas like "period = 1 / frequency" and "frequency = 1 / period" which are the same formula restated and can be found in the reciprocal article, talk about some SI units (Hertz and seconds), and another list of formulas like "wavelength / time = velocity" that are restated 6 times. Seems like a pointless ...
A seasonal pattern exists when a time series is influenced by seasonal factors. Seasonality occurs over a fixed and known period (e.g., the quarter of the year, the month, or day of the week). [1], the irregular component (or "noise") at time t, which describes random, irregular influences. It represents the residuals or remainder of the time ...