VU meter noun2 •A display in audio equipment that represents the loudness of the signal.VU (volume unit) meters are wonderful to look at as their pointers swing merrily back and forth across their brightly-lit faces. — 1978 •Any animated graphical representation of the volume of sound or music (often subdivided across channels).The ECC Syncro Demo is a demonstration of text scrolling in the GS border area, as well as having VU meters in the border area. Similar to FTA's X-mas demo. — 1991 formsVU meters