Waveform Options

Posted By admin On 29/07/21
  1. Waveform Options Vs
  2. Waveform Optimization

Note:

A Function Generator or sometimes called a Waveform Generator is a device or circuit that produces a variety of different waveforms at a desired frequency. It can generate Sine waves, Square waves, Triangular and Sawtooth waveforms as well as other types of output waveforms.

Starting with the June 2015 release of Premiere Pro CC, vectroscope, and waveform monitors are replaced with new Lumetri Scopes. For more information see Lumetri Scopes.

Premiere Pro has a vectorscope and waveform monitors (YC Waveform, YCbCr Parade, and RGB Parade) to help you output a video program that meets broadcast standards and make adjustments based on aesthetic considerations, such as color corrections.

Options

For decades, video production and duplication facilities have used waveform monitors and vectorscopes to accurately evaluate video levels—specifically, color and brightness.

  • LTSpice - waveform display options. Thread starter Ramussons; Start date Feb 7, 2017; Search Forums; New Posts; Thread Starter. Joined May 3, 2013 908.
  • Click on Waveform under the Window menu option. In the Hierarchy window, highlight all signals in the signal list with the left mouse button. Then with the middle mouse button, drag the selected signals over to the black space in the waveform window. At this point, you should see the waveforms starting at time 0 of the simulation.
  • As mentioned above, unlike LTE NR has two options for UL Waveform. One is CP-OFDM (same as DL Waveform) and the other one is DFT-s-OFDM which is same as LTE UL waveform. Transform Precoding is the first step to create DFT-s-OFDM waveform as highlighed below. Whether UE need to use CP-OFDM or DFT-s-OFDM is determined by following RRC Parameter.

A vectorscope measures the chrominance (color components) of a video signal, including hue and saturation. A vectorscope maps a video’s color information onto a circular chart.

The traditional waveform monitor is useful in measuring the brightness, or luminance component, of a video signal. In Premiere Pro, the waveform monitors can also display chrominance information. The waveform monitor works something like a graph. The horizontal axis of the graph corresponds to the video image from left to right. Vertically, the waveform displays the luminance levels, and optionally, the chrominance levels.

You can view a vectorscope, YC waveform, YCbCrParade, and an RGB Parade scope either individually or grouped inthe Reference Monitor, Program Monitor, or Source Monitor.

  1. Depending on whether you want to view a scopefor a master clip or sequence clip, do one of the following:
    • Double-click the clip in the Project panel.

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    • In a Timeline panel, position the playhead in thesequence you want.

  2. (Optional) Choose Reference Monitor from the Window menuif you selected a clip in a Timeline panel.
  3. Choose any of the following from either the ReferenceMonitor, Program Monitor, or Source Monitor menu:

    Displays the Vectorscope, YC Waveform, YCbCr Parade,and RGB Parade scopes in one monitor.

    Displays a vectorscope for viewing the chrominance inthe video.

    Displays a waveform monitor for viewing luminance andchrominance information.

    Displays a scope with luminance (Y) and color difference(Cb and Cr) information.

    Displays a scope showing the red, green, and blue componentsin the video.

    Displays the Vectorscope, YC Waveform, and YCbCr Paradescope in one monitor.

    Displays the Vectorscope, YC Waveform, and RGB Paradescope in one monitor.

The Vectorscope displays a circular chart, similar toa color wheel, that shows the video’s chrominance information. Saturationis measured from the center of the chart outward. Saturated, vividcolors produce a pattern some distance from the center of the chart,while a black-and-white image produces only a dot at the centerof the chart. The particular color, or hue, of the image determinesthe direction (angle of the pattern). Small target boxes indicatewhere fully saturated magenta, blue, cyan, green, yellow, and red(present in a color bars test pattern) should appear. In NTSC video,chrominance levels should not exceed these target areas.


A. Target boxes B. Imageprofile

Adjusts the brightness of the pattern display. It does notaffect the video output signal.

Default position. Use to check video input in which standard75% intensity bars, like those in Premiere Pro, are used.

Shows the entire range of video signal chrominance. Use withvideo input containing 100% intensity bars.

The YC Waveform displays a graph showing the signal intensity in the video clip. The horizontal axis of the graph corresponds to the video image (from left to right) and the vertical axis is the signal intensity in units called IRE (named for the Institute of Radio Engineers).

The YC Waveform displays luminance information as a green waveform. Bright objects produce a waveform pattern (bright green areas) near the top of the graph; darker objects produce a waveform toward the bottom. For NTSC video in the United States, luminance levels should range from 7.5 to 100 IRE (sometimes referred to as the legal broadcast limit). Japan’s implementation of NTSC standards permits a luminance range from 0 to 100 IRE. Generally, luminance and chroma values should be about the same and distributed evenly across the 7.5 to 100 IRE range.

The YC Waveform also displays chrominance information as a blue waveform. The chrominance information is overlaid upon the luminance waveform.

You can specify whether the YC Waveform displays both luminance and chrominance information, or just luminance information.


A. IRE units B. Rangeof signal components

Adjusts the brightness of the waveform display. It does notaffect the video output signal.

Displays a waveform that approximates the final analog video outputsignal. Deselecting this option displays the digital video information.

Displays both chrominance in addition to luminance information. Deselectingthis option displays only the luminance.

The YCbCr Parade scope displays waveforms representinglevels of the luminance and color difference channels in the videosignal. The waveforms appear in a graph one after another.

The Intensity control adjusts the brightness of the waveforms.It does not affect the video output signal.

Waveform Options Vs

Note:

Cb and Cr are the color difference channels in a digital videosignal. Cb is blue minus luma and Cr is red minus luma. Y representsluma.


A. Values B. Y (luminance)waveform C. Cb waveform D. Cr waveform E. Rangeof signal components

The RGB Parade scope displays waveforms representingthe levels of the red, green, and blue channels in a clip. The waveformsappear in a graph one after another, in parade fashion. This scopeis useful for viewing the distribution of the color components ina clip. The levels of each color channel are measured proportionatelyto each other using a scale of 0 to 100.

The Intensity control adjusts the brightness of the waveforms.It doesn’t affect the video output signal.

Waveform Optimization


A. Values B. R waveform C. G waveform D. B waveform E. Rangeof signal components

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