signals.py 文件源码

def _signal_template(self,
                         signal_period,
                         frequency_sampling,
                         frequency_cut,
                         mean,
                         std,
                         filter_std=25,
                         filter_window_size=500,
                         seed=None,
                         n: int=1000):
        randgen = np.random.RandomState(seed=seed)
        noisy = randgen.normal(mean, std, size=self._size)
        high_band_filter = firwin(filter_window_size, frequency_cut,
                                  nyq=frequency_sampling,
                                  window=('gaussian', filter_std))
        filtered_noisy = convolve(noisy, high_band_filter, mode='same')
        return filtered_noisy