sdr.DDS.process(x: ndarray) → ndarray Steps the DDS with the variable phase increment signal \(x[n]\). Parameters:¶ x: ndarray¶The input signal, \(x[n]\). The input signal varies the per-sample phase increment of the DDS. Returns:¶ The output complex exponential, \(y[n]\). Examples¶ See the Phase-locked loops example.