aspcore.fouriertransform.correlate_sum_tf

aspcore.fouriertransform.correlate_sum_tf(time_filter, freq_signal)

Computes linear correlation between a frequency-domain signal and a time-domain filter

Last dimension of the filter is summed over. Next to last dimension of the signal is summed over.

Parameters:

• time_filter (ndarray) – The filter. The last axis should correspond to time.

• freq_signal (ndarray) – The signal. The first axis should correspond to frequency. Before being transformed into the frequency domain, it should have been twice as long as the filter

Returns:

correlation – The linear correlation between the filter and the signal

Return type:

ndarray