コード例 #1
0
        public static void Execute(Arguments arguments)
        {
            MainEntry.WarnIfDeveloperEntryUsed();

            string title = "# EVENT PATTERN RECOGNITION.";
            string date  = "# DATE AND TIME: " + DateTime.Now;

            Log.WriteLine(title);
            Log.WriteLine(date);

            Log.Verbosity = 1;

            string targetName = arguments.Target; // prefix of name of created files

            var input = arguments.Source;

            string        recordingFileName  = input.Name;
            string        recordingDirectory = input.DirectoryName;
            DirectoryInfo outputDir          = arguments.Config.ToFileInfo().Directory;
            FileInfo      targetPath         = outputDir.CombineFile(targetName + "_target.txt");
            FileInfo      targetNoNoisePath  = outputDir.CombineFile(targetName + "_targetNoNoise.txt");
            FileInfo      noisePath          = outputDir.CombineFile(targetName + "_noise.txt");
            FileInfo      targetImagePath    = outputDir.CombineFile(targetName + "_target.png");
            FileInfo      paramsPath         = outputDir.CombineFile(targetName + "_params.txt");

            Log.WriteIfVerbose("# Output folder =" + outputDir);

            //i: GET RECORDING
            AudioRecording recording = new AudioRecording(input.FullName);

            //if (recording.SampleRate != 22050) recording.ConvertSampleRate22kHz(); THIS METHOD CALL IS OBSOLETE
            int sr = recording.SampleRate;

            //ii: READ PARAMETER VALUES FROM INI FILE
            var config = new ConfigDictionary(arguments.Config);
            Dictionary <string, string> dict = config.GetTable();

            // framing parameters
            //double frameOverlap      = FeltTemplates_Use.FeltFrameOverlap;   // default = 0.5
            double frameOverlap = double.Parse(dict["FRAME_OVERLAP"]);

            //frequency band
            int minHz = int.Parse(dict["MIN_HZ"]);
            int maxHz = int.Parse(dict["MAX_HZ"]);

            // oscillation OD parameters
            double dctDuration  = double.Parse(dict[OscillationRecogniser.key_DCT_DURATION]);  // 2.0; // seconds
            double dctThreshold = double.Parse(dict[OscillationRecogniser.key_DCT_THRESHOLD]); // 0.5;
            int    minOscilFreq = int.Parse(dict[OscillationRecogniser.key_MIN_OSCIL_FREQ]);   // 4;
            int    maxOscilFreq = int.Parse(dict[OscillationRecogniser.key_MAX_OSCIL_FREQ]);   // 5;
            bool   normaliseDCT = false;

            // iii initialize the sonogram config class.
            SonogramConfig sonoConfig = new SonogramConfig(); //default values config

            sonoConfig.SourceFName = recording.BaseName;

            //sonoConfig.WindowSize = windowSize;
            sonoConfig.WindowOverlap = frameOverlap;

            // iv: generate the sonogram
            BaseSonogram sonogram = new SpectrogramStandard(sonoConfig, recording.WavReader);

            Log.WriteLine("Frames: Size={0}, Count={1}, Duration={2:f1}ms, Overlap={5:f2}%, Offset={3:f1}ms, Frames/s={4:f1}",
                          sonogram.Configuration.WindowSize, sonogram.FrameCount, sonogram.FrameDuration * 1000,
                          sonogram.FrameStep * 1000, sonogram.FramesPerSecond, frameOverlap);
            int binCount = (int)(maxHz / sonogram.FBinWidth) - (int)(minHz / sonogram.FBinWidth) + 1;

            Log.WriteIfVerbose("Freq band: {0} Hz - {1} Hz. (Freq bin count = {2})", minHz, maxHz, binCount);

            // v: extract the subband energy array
            Log.WriteLine("# Start extracting target event.");
            double[] dBArray = SNR.DecibelsInSubband(sonogram.Data, minHz, maxHz, sonogram.FBinWidth);
            for (int i = 0; i < sonogram.FrameCount; i++)
            {
                dBArray[i] /= binCount; // get average dB energy
            }

            double Q  = 0.0;
            double SD = 0.0;

            throw new NotImplementedException("Mike changed the API here, I don't know how to fix it.");
            dBArray = new[] { 0.0 };             // SNR.NoiseSubtractMode(dBArray, out Q, out SD);
            double maxDB       = 6.0;
            double dBThreshold = 2 * SD / maxDB; //set dB threshold to 2xSD above background noise

            dBArray = SNR.NormaliseDecibelArray_ZeroOne(dBArray, maxDB);
            dBArray = DataTools.filterMovingAverage(dBArray, 7);

            //Log.WriteLine("Q ={0}", Q);
            //Log.WriteLine("SD={0}", SD);
            //Log.WriteLine("Th={0}", dBThreshold); //normalised threshhold

            // #############################################################################################################################################
            // vi: look for oscillation at required OR for ground parrots.
            double[] odScores = Oscillations2010.DetectOscillationsInScoreArray(dBArray, dctDuration, sonogram.FramesPerSecond, dctThreshold,
                                                                                normaliseDCT, minOscilFreq, maxOscilFreq);

            //odScores = SNR.NoiseSubtractMode(odScores, out Q, out SD);
            double maxOD = 1.0;

            odScores = SNR.NormaliseDecibelArray_ZeroOne(odScores, maxOD);
            odScores = DataTools.filterMovingAverage(odScores, 5);

            //odScores = DataTools.NormaliseMatrixValues(odScores); //NormaliseMatrixValues 0 - 1
            //double odThreshold = (10 * SD) / maxOD;   //set od threshold to 2xSD above background noise
            //double odThreshold = dctThreshold;
            double odThreshold = 0.4;

            Log.WriteLine("Max={0}", odScores.Max());

            //Log.WriteLine("Q  ={0}", Q);
            //Log.WriteLine("SD ={0}", SD);
            Log.WriteLine("Th ={0}", dctThreshold); //normalised threshhold

            // #############################################################################################################################################
            // vii: LOOK FOR GROUND PARROTS USING TEMPLATE
            var template = GroundParrotRecogniser.ReadGroundParrotTemplateAsList(sonogram);

            double[] gpScores = DetectEPR(template, sonogram, odScores, odThreshold);
            gpScores = DataTools.normalise(gpScores); //NormaliseMatrixValues 0 - 1

            // #############################################################################################################################################

            // iv: SAVE extracted event as matrix of dB intensity values
            //FileTools.WriteMatrix2File(template, targetPath);                  // write template values to file PRIOR to noise removal.
            //FileTools.WriteMatrix2File(templateMinusNoise, targetNoNoisePath); // write template values to file AFTER to noise removal.
            //FileTools.WriteArray2File(noiseSubband, noisePath);

            // v: SAVE image of extracted event in the original sonogram
            string sonogramImagePath = outputDir + Path.GetFileNameWithoutExtension(recordingFileName) + ".png";

            //DrawSonogram(sonogram, sonogramImagePath, dBArray, dBThreshold / maxDB, odScores, dctThreshold, gpScores, template);
        }
コード例 #2
0
 public override Task <int> Execute(CommandLineApplication app)
 {
     GroundParrotRecogniser.Execute(this);
     return(this.Ok());
 }