linguistic:voice_change, quality:corruption
Difference from conventional power

In physics, the average power of an AC signal is defined as the average value of voltage times current; for resistive (non- reactive) circuits, where voltage and current are in phase, this is equivalent to the product of the rms voltage and current:

But in signal processing and communication, one usually assumes that R = 1 Ω {\displaystyle R=1\Omega } so that factor is usually not included while measuring power or energy of a signal. This may cause some confusion among readers, but the resistance factor is not significant for typical operations performed in signal processing, or for computing power ratios. For most cases, the power of a signal would be considered to be simply