sdynpy.signal_processing.sdynpy_srs.sdof_filter

sdof_filter(b, a, signal, zi=None)

Applies a filter to simulate a single degree of freedom system

Parameters

• b (np.ndarray) – Size 3 array representing filter coefficients used by scipy.signal.lfilter

• a (np.array) – Size 3 array representing filter coefficients used by scipy.signal.lfilter

• signal (np.ndarray) – The signals that are to be filtered

• zi (np.ndarray, optional) – Optional initial state for the filters, having length max(len(a), len(b)) - 1. If not specified, zero initial conditions are assumed.

Returns

filtered_signal – The filtered signal

Return type

np.ndarray