Filters

A set of filter designs to simplify the process of filtering data.

cheb2_notch_filter(self, cutoff, order=5, rs=3, width=.1, method=None, btype='bandstop')

A notch filter using the cheby2 filter from scipy.

Params

• cutoff: The frequency at which the filter is to act.
• order: The order of the filter
• rs: Minimum attenuation required in stop band. Specified in decibels.
• width: How precise is the filter supposed to be. In Hz.
• method: Method of filtering. By default scipy.signal.filtfilt is used
• btype: Type of filter bandstop or bandpass

butter_highpass_filter(self, cutoff, order=5, method=None)

A highpass filter filter using the butterworth filter from scipy.

Params

• cutoff: The frequency at which the filter is to act.
• order: The order of the filter
• method: Method of filtering. By default scipy.signal.filtfilt is used

butter_lowpass_filter(self, cutoff, order=5, method=None)

A lowpass filter filter using the butterworth filter from scipy.

Params

• cutoff: The frequency at which the filter is to act.
• order: The order of the filter
• method: Method of filtering. By default scipy.signal.filtfilt is used

butter_bandpass_filter(self, lowcut, highcut, order=5, method=None)

A bandpass filter filter using the butterworth filter from scipy.

Params

• lowcut: The lower frequency at which the filter is to act.
• highcut: The higher frequency at which the filter is to act.
• order: The order of the filter
• method: Method of filtering. By default scipy.signal.filtfilt is used