From 14e041dbe86daa32a86769e8f0829f40b5695338 Mon Sep 17 00:00:00 2001
From: towsey <m.towsey@qut.edu.au>
Date: Fri, 12 Jun 2020 18:15:22 +1000
Subject: [PATCH] Update AnthusNovaeseelandiae.cs

Issue #321 Removed unused method.
---
 .../Birds/AnthusNovaeseelandiae.cs            | 67 +------------------
 1 file changed, 3 insertions(+), 64 deletions(-)

diff --git a/src/AnalysisPrograms/Recognizers/Birds/AnthusNovaeseelandiae.cs b/src/AnalysisPrograms/Recognizers/Birds/AnthusNovaeseelandiae.cs
index 5409435e9..1c70b0e3e 100644
--- a/src/AnalysisPrograms/Recognizers/Birds/AnthusNovaeseelandiae.cs
+++ b/src/AnalysisPrograms/Recognizers/Birds/AnthusNovaeseelandiae.cs
@@ -146,6 +146,9 @@ public static List<EventCommon> FilterEventsOnFrequencyProfile(List<EventCommon>
                 var componentEvents = ev.ComponentEvents;
                 var points = EventExtentions.GetCompositeTrack(componentEvents).ToArray();
 
+                // Uncomment this line when want to see the composite track profile.
+                //WriteFrequencyProfile(points);
+
                 // For Pipit require minimum of four frames duration.
                 var length = points.Length;
                 if (length < 4)
@@ -153,8 +156,6 @@ public static List<EventCommon> FilterEventsOnFrequencyProfile(List<EventCommon>
                     continue;
                 }
 
-                //WriteFrequencyProfile(points);
-
                 // Only select events having strong downward slope in spectrogram.
                 var avFirstTwoEvents = (points[0].Hertz.Minimum + points[0].Hertz.Minimum) / 2;
                 var avLastTwoEvents = (points[length - 1].Hertz.Minimum + points[length - 2].Hertz.Minimum) / 2;
@@ -167,70 +168,8 @@ public static List<EventCommon> FilterEventsOnFrequencyProfile(List<EventCommon>
             return returnEvents;
         }
 
-        /// <summary>
-        /// The Boobook call syllable is shaped like an inverted "U". Its total duration is close to 0.15 seconds.
-        /// The rising portion lasts for 0.06s, followed by a turning portion, 0.03s, followed by the decending portion of 0.06s.
-        /// The constants for this method were obtained from the calls in a Gympie recording obtained by Yvonne Phillips.
-        /// </summary>
-        /// <param name="ev">An event containing at least one forward track i.e. a chirp.</param>
-        public static void SetFrequencyProfileScore(ChirpEvent ev)
-        {
-            const double risingDuration = 0.06;
-            const double gapDuration = 0.03;
-            const double fallingDuration = 0.06;
-
-            var track = ev.Tracks.First();
-            var profile = track.GetTrackFrequencyProfile().ToArray();
-
-            // get the first point
-            var firstPoint = track.Points.First();
-            var frameDuration = firstPoint.Seconds.Maximum - firstPoint.Seconds.Minimum;
-            var risingFrameCount = (int)Math.Floor(risingDuration / frameDuration);
-            var gapFrameCount = (int)Math.Floor(gapDuration / frameDuration);
-            var fallingFrameCount = (int)Math.Floor(fallingDuration / frameDuration);
-
-            var startSum = 0.0;
-            if (profile.Length >= risingFrameCount)
-            {
-                for (var i = 0; i <= risingFrameCount; i++)
-                {
-                    startSum += profile[i];
-                }
-            }
-
-            int startFrame = risingFrameCount + gapFrameCount;
-            int endFrame = startFrame + fallingFrameCount;
-            var endSum = 0.0;
-            if (profile.Length >= endFrame)
-            {
-                for (var i = startFrame; i <= endFrame; i++)
-                {
-                    endSum += profile[i];
-                }
-            }
-
-            // set score to 1.0 if the profile has inverted U shape.
-            double score = 0.0;
-            if (startSum > 0.0 && endSum < 0.0)
-            {
-                score = 1.0;
-            }
-
-            ev.FrequencyProfileScore = score;
-        }
-
-        /// <summary>
-        /// .
-        /// </summary>
-        /// <param name="points">List of spectral points.</param>
         public static void WriteFrequencyProfile(ISpectralPoint[] points)
         {
-            /* Here are the frequency profiles of some events.
-             * Note that the first five frames (0.057 seconds) have positive slope and subsequent frames have negative slope.
-             * The final frames are likely to be echo and to be avoided.
-             * Therefore take the first 0.6s to calculate the positive slope, leave a gap of 0.025 seconds and then get negative slope from the next 0.6 seconds.
-            */
-
             if (points != null)
             {
                 var str = $"Track({points[0].Seconds.Minimum:F2}):";