Infrasound detections were processed using the Progressive Multi-Channel Correlation (PMCC) detection algorithm (Brachet et al., 2010; Cansi, 1995; Cansi and Le Pichon, 2008; Le Pichon and Cansi, 2003).

The DTK-GPMCC software was kindly provided by  Commissariat à l’énergie atomique et aux énergies alternatives, Centre DAM-Île-de-France, Département Analyse, Surveillance, Environnement, Bruyères-le-Châtel, F91297 Arpajon, France.

References:
Brachet, N., Brown, D., Le Bras R., Cansi, Y., Mialle, P., Coyne, J., 2010. Monitoring the Earth’s Atmosphere with the Global IMS Infrasound Network. In: Le Pichon, A., Blanc, E., Hauchecorne A. (Eds.), Infrasound Monitoring for Atmospheric Studies. Springer Science+Business Media B.V., 77-118. Doi: 10.1007/978-1-4020-9508-5_3

Cansi, Y., 1995. An automatic seismic event processing for detection and location: The P.M.C.C. method. Geophys. Res. Lett. 22, 1021-1024. doi: 10.1029/95GL00468 

Cansi Y., Le Pichon A., 2008. Infrasound Event Detection Using the Progressive Multi-Channel Correlation Algorithm. In: Havelock D., Kuwano S., Vorländer M. (Eds.) Handbook of Signal Processing in Acoustics. Springer, New York, NY. https://doi.org/10.1007/978-0-387-30441-0_77

Le Pichon, A., Cansi, Y., 2003. PMCC for infrasound data processing. InfraMatics 02, 1-9.