RMS power
  • A value obtained by squaring multiple instantaneous power measurements, averaging these over a given time interval, and taking the square root of this average.
  • For a periodic quantity, a value obtained by squaring multiple instantaneous power measurements, averaging these over the time of a complete cycle, and taking the square root of this average. In the specific case of a sinusoidal AC, the RMS power value is equal to 0.707 of the peak power value. When expressing power in audio applications, other parameters should be specified, as in 100 watts RMS per channel into 8 ohms, with 0.01% total harmonic distortion and intermodulation distortion at rated power, from 10 Hz to 60 kHz, +/- 0.5 dB.
  • synonym root-mean-square power

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