volume unit

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volume unit

[′väl·yəm ‚yü·nət]
(engineering acoustics)
A unit for expressing the audio-frequency power level of a complex electric wave, such as that corresponding to speech or music; the power level in volume units is equal to the number of decibels above a reference level of 1 milliwatt as measured with a standard volume indicator. Abbreviated VU.
References in periodicals archive ?
And have a VU meter there and also with a plug for earphones, so I could walk out with the little thing suspended on my chest from a strap.
In addition, CatDV 12 now includes enhanced support for audio files including an advanced waveform display, VU meters, and the ability to handle more audio tracks.
The array is a linear-scaled display for original equipment manufacturers (OEMs) designing power, voltage or VU meters in applications such as process control panels, consumer audio equipment and professional sound equipment.