Audio Metering means using a visual display to monitor audio levels. This helps maintain audio signals at their optimum level and minimise degradation. There are two common types of meter which are used to measure audio levels:
VU Meter (Volume Unit)
PPM Meter (Peak Program)
Both types of meter are available in various forms including stand-alone units, components in larger systems, and software applications. Whatever the type of meter, two characteristics are important:
The scale which defines which units are being measured.
The ballistics of the meter which determine how fast it responds to sound and returns to a lower level.
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