An analog VU (volume unit) meter is a splendid moving-coil measuring instrument. It is a passive electromechanical device displaying a representation of the signal level in an audio equipment. Even ...

Once a mainstay of every station, the reel-to-reel recorder is now a mystery to some people. While most radio stations are fully digital now, there are still a few limited (often forgotten) parts of ...

Fig. 1: Note the 3 dB difference in left- and right-channel levels shown by the console VU meters in this photo of announcer Pete Vukelich in the studio of WWWI Radio in Baxter, Minn. Yes, we are in ...

Audio metering is present in almost any equipment that plays or records audio – from cell phones displaying bar graphs of audio output levels, to home stereos with flashing LEDS, to live broadcasting.