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  1. ObsPy Documentation (1.2.0)
  2. ObsPy Library Reference
  3. obspy.signal - Signal processing routines for ObsPy
  4. obspy.signal.trigger

12.2.1. obspy.signal.trigger.recursive_sta_lta

recursive_sta_lta(a, nsta, nlta)[source]

Recursive STA/LTA.

Fast version written in C.

Note:

This version directly uses a C version via CTypes
Parameters:
  • a (numpy.ndarray, dtype=float64) Seismic Trace, numpy.ndarray dtype float64
  • nsta (int) Length of short time average window in samples
  • nlta (int) Length of long time average window in samples
Return type:

numpy.ndarray, dtype=float64
Returns:

Characteristic function of recursive STA/LTA

See also

[Withers1998] (p. 98) and [Trnkoczy2012]