Audio power
（重定向自RMS power）
![A graph of instantaneous power over time for a waveform, with peak power labeled P0 and average power labeled Pavg](/Images/godic/202502/07/Peak-power-average-power-tau-T3458.png")
Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts. The electrical power delivered to the loudspeaker, together with its sensitivity, determines the sound power level generated (with the rest being converted to heat).