Work on AUst bittern recognizer

Issue #319 Start work on reducing FPs.
QutEcoacoustics · May 29, 2020 · c680408 · c680408
1 parent 6818266
commit c680408
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Showing 2 changed files with 7 additions and 11 deletions.
diff --git a/src/AnalysisConfigFiles/RecognizerConfigFiles/Towsey.BotaurusPoiciloptilus.yml b/src/AnalysisConfigFiles/RecognizerConfigFiles/Towsey.BotaurusPoiciloptilus.yml
@@ -1,6 +1,6 @@
 ---
 
-# Australasian Bittern
+# Australasian Bittern = Botaurus poiciloptilus
 # Resample rate must be 2 X the desired Nyquist
 ResampleRate: 8000
 # SegmentDuration: units=seconds;    

diff --git a/src/AnalysisPrograms/Recognizers/Birds/BotaurusPoiciloptilus.cs b/src/AnalysisPrograms/Recognizers/Birds/BotaurusPoiciloptilus.cs
@@ -115,22 +115,18 @@ public override RecognizerResults Recognize(
 
             //filter the events for duration in seconds
             var minimumEventDuration = 0.5;
+            var maximumEventDuration = 2.0;
             if (genericConfig.CombinePossibleSyllableSequence)
             {
                 minimumEventDuration = 2.0;
             }
 
-            var filteredEvents = new List<EventCommon>();
-            foreach (var ev in newEvents)
-            {
-                var eventDuration = ((SpectralEvent)ev).EventDurationSeconds;
-                if (eventDuration > minimumEventDuration && eventDuration < 11.0)
-                {
-                    filteredEvents.Add(ev);
-                }
-            }
+            combinedResults.NewEvents = SpectralEvent.FilterOnDuration(newEvents, minimumEventDuration, maximumEventDuration);
 
-            combinedResults.NewEvents = filteredEvents;
+            double average = 365;
+            double sd = 22;
+            double sigmaThreshold = 3.0;
+            combinedResults.NewEvents = SpectralEvent.FilterOnBandwidth(combinedResults.NewEvents, average, sd, sigmaThreshold);
 
             //UNCOMMENT following line if you want special debug spectrogram, i.e. with special plots.
             //  NOTE: Standard spectrograms are produced by setting SaveSonogramImages: "True" or "WhenEventsDetected" in UserName.SpeciesName.yml config file.