You use the color bars and 1-kHz tone clips in tandem at the beginning of a video. Color bars are multicolored vertical bars at the beginning of broadcast videos that help broadcasters calibrate the color for a video.
The 1‑kHz tone is a short tone at the 1-kHz frequency that broadcasters use to adjust audio levels—broadcasters set it at a specific level for reference, and then decrease or increase their own audio levels to match. Because some audio workflows must be calibrated at a specific tone level, you can customize the tone level to match your audio workflow.
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then click Project.
and
choose Bars And Tone.A Bars And Tone clip will be placed in the Media view and in the My Project panel.