Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Comparing shift-autocorrelation with cepstrum for detection of burst pulses in impulsive noise

: Baggenstoss, P.M.; Kurth, F.


Journal of the Acoustical Society of America : JASA 136 (2014), Nr.4, S.1574-1582
ISSN: 0001-4966
ISSN: 1520-8524
Fraunhofer FKIE ()

The recently introduced shift method is applied to detect and characterize burst-pulse vocalizations produced by marine mammals. To this end, burst pulses are modeled as sequences of click-like events that are repeated after a certain inter-click interval (ICI). The shift method is used to first emphasize events that repeat within an input signal. Afterwards, the ICI can be estimated. A qualitative comparison of the method is made against classical cepstrum using real data. The detection performance is measured using random trials of simulated data with impulsive noise. It is shown that although the cepstrum outperforms in Gaussian noise at low signal-to-noise ratio, the shift method performs significantly better in impulsive noise.