pyecsca.sca.trace.filter module

Provides functions for filtering traces using digital (low/high/band)-pass and bandstop filters.

filter_lowpass(trace, sampling_frequency, cutoff)

Apply a lowpass digital filter (Butterworth) to trace, given sampling_frequency and cutoff frequency.

Parameters:

• trace (Trace)

• sampling_frequency (int)

• cutoff (int)

Return type:

Trace

Returns:

filter_highpass(trace, sampling_frequency, cutoff)

Apply a highpass digital filter (Butterworth) to trace, given sampling_frequency and cutoff frequency.

Parameters:

• trace (Trace)

• sampling_frequency (int)

• cutoff (int)

Return type:

Trace

Returns:

filter_bandpass(trace, sampling_frequency, low, high)

Apply a bandpass digital filter (Butterworth) to trace, given sampling_frequency, with the passband from low to high.

Parameters:

• trace (Trace)

• sampling_frequency (int)

• low (int)

• high (int)

Return type:

Trace

Returns:

filter_bandstop(trace, sampling_frequency, low, high)

Apply a bandstop digital filter (Butterworth) to trace, given sampling_frequency, with the stopband from low to high.

Parameters:

• trace (Trace)

• sampling_frequency (int)

• low (int)

• high (int)

Return type:

Trace

Returns: