Signal Processing#

get_rising_frames_from_ttl(trace: ndarray, threshold: float | None = None) → ndarray[source]#

Return the frame indices for rising events in a TTL pulse.

Parameters:

  • trace (numpy.ndarray) – A TTL signal.

  • threshold (float, optional) – The threshold used to distinguish on/off states in the trace. The mean of the trace is used by default.

Returns:

rising_frames – The frame indices of rising events.

Return type:

numpy.ndarray

get_falling_frames_from_ttl(trace: ndarray, threshold: float | None = None) → ndarray[source]#

Return the frame indices for falling events in a TTL pulse.

Parameters:

  • trace (numpy.ndarray) – A TTL signal.

  • threshold (float, optional) – The threshold used to distinguish on/off states in the trace. The mean of the trace is used by default.

Returns:

falling_frames – The frame indices of falling events.

Return type:

numpy.ndarray