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The Peak-to-average power ratio (PAPR) of a signal is the peak power divided by the average power.
$P A P R = \frac{x_{p e a k}^{2}}{S_{x}} = \frac{{\hat{x}}^{2}}{x_{e f f}^{2}}$

Crest factor
$C = \sqrt{P A P R}$

Waveform	$P A P R$	$P A P R \|_{d B}$
DC		0 dB
Square		0 dB
Sine		3,01 dB
Cosine		3,01 dB
Triangle		4,77 dB
Sawtooth		4,77 dB
Audio signal	80	19 dB

Peak-to-average power ratio (PAPR)

Each wave form has its particular PAPR value. Measure for different wave forms the peak amplitude and the time-averaged power. Determine the PAPR of this wave form.

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Peak-to-average power ratio of signals