Created on 2013-02-01 00:32:00
Rms (root mean square), is the preferred form of ac signal detection which measures amplitude in terms of its equivalent power content, regardless of signal waveshape.
The rms voltage level (Vrms) is the most common level measurement for audio signals, although this level is often stated in a variety of related units such as dBV or dBu. Rms values are typically lower than peak values for the same signal.