Chelonia LimitedWildlife Acoustic Monitoring | ||
Analysis
Once your PODs have been retrieved, you're ready to download the data and analyze it. There are two apps for downloading POD data:
The apps convert the data stored on the POD's SD card into a file that holds all the clicks recorded by the POD as well as the angle of the POD to vertical and the temperature for each minute. The apps then allow you to view the raw data and run the automatic click train detection classifiers, KERNO and KERNO-F to extract click trains. The classification process typically takes 1 minute per day of data and provides a more accurate classification than can be achieved by classifiers that work on individual clicks. In the SAMBAH project (see Testimonials), 400 years of data from the Baltic Sea were analysed in 5 days of computer time to give a false positive rate of less than 1 false positive second per year by using the KERNO classifier and an encounter classifier Hel1 developed using a large data set from Poland. This very low error rate was achieved at high sensitivity and enabled the data to be used without further editing. The apps contains many display tools and filters that are helpful in understanding the soundscape and cetacean click trains. To validate acoustic detections requires a knowledge of noise regimes as well as cetacean clicks and trains. Finally, the apps have flexible export tools to pass the data in various formats to spreadsheets, databases and statistics packages. For more information, see the F-POD and C-POD pages. ConsultancyWe would like to use customer F-POD data to help us improve the accuracy and sensitivity of the F-POD PC app train filter and species identification. Any app improvements we make will always be retrospectively applicable to all data sets and new versions of the F-POD app will be available free of charge, so that you can re-analyse your data. If you send us a copy of your F-POD data, we will, in return, provide brief feedback on the quality of your datasets free of charge. Any data you send us will be kept in complete confidence. You can send your data to us in any of the following ways:
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