Filtering Posts By: "PPM"
02.05.2007| By Shure Notes|
Meters which monitor audio levels are typically one of two varieties: VU (Volume Unit) or PPM (Peak Program Meters). Though both perform the same function, they accomplish the function in very different manners. A VU meter displays the average volume level of an audio signal. A PPM displays the peak volume level of an audio signal. Analogy: The average height of the Himalayan Mountains is 18,000 feet (VU), but Mt. Everest’s peak is 29,000+ feet (PPM). For a steady state sine wave tone, the difference between the average level (VU) and the peak level (PPM) …