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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 6 | Geoscience Letters

Fig. 6

From: Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing

Fig. 6

Array processing results for I04AU. In this example a noise profile from a single sensor at the station was used for noise reduction processing of all channels (Batch process NR). Adaptive noise reduction, which does not require a preselected noise profile, was also used on all channels (Batch adaptive NR). The noise reduction software was configured with the same settings as was used for I06AU. Prior to processing, the signal is present only at frequencies lower than the microbarom whereas in the noise-reduced data the broader band characteristics of the signal are visible

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