sdr.average_power(x: ArrayLike) → float Measures the average power of a time-domain signal \(x[n]\). \[P_{\text{avg}} = \frac{E}{N} = \frac{1}{N} \sum_{n=0}^{N-1} \left| x[n] \right|^2\] Parameters:¶ x: ArrayLike¶The time-domain signal \(x[n]\) to measure. Returns:¶ The average power of \(x[n]\) in units^2.