Projektdateien hinzufügen.

AudioVisualizer/SampleAggregator.cs

@@ -0,0 +1,68 @@
+using NAudio.Dsp;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioVisualizer
+{
+    /*
+    *This class is not created by me(Stone_Red)
+    *I forgot who mad this class if i find the source of this class i will credit the original creator
+    */
+    class SampleAggregator
+    {
+        // FFT
+        public event EventHandler<FftEventArgs> FftCalculated;
+        public bool PerformFFT { get; set; }
+        private Complex[] fftBuffer;
+        private FftEventArgs fftArgs;
+        private int fftPos;
+        private int fftLength;
+        private int m;
+
+        public SampleAggregator(int fftLength)
+        {
+            if (!IsPowerOfTwo(fftLength))
+            {
+                throw new ArgumentException("FFT Length must be a power of two");
+            }
+            this.m = (int)Math.Log(fftLength, 2.0);
+            this.fftLength = fftLength;
+            this.fftBuffer = new Complex[fftLength];
+            this.fftArgs = new FftEventArgs(fftBuffer);
+        }
+
+        bool IsPowerOfTwo(int x)
+        {
+            return (x & (x - 1)) == 0;
+        }
+
+        public void Add(float value)
+        {
+            if (PerformFFT && FftCalculated != null)
+            {
+                fftBuffer[fftPos].X = (float)(value * FastFourierTransform.HammingWindow(fftPos, fftLength));
+                fftBuffer[fftPos].Y = 0; // This is always zero with audio.
+                fftPos++;
+                if (fftPos >= fftLength)
+                {
+                    fftPos = 0;
+                    FastFourierTransform.FFT(true, m, fftBuffer);
+                    FftCalculated(this, fftArgs);
+                }
+            }
+        }
+    }
+
+    public class FftEventArgs : EventArgs
+    {
+        public FftEventArgs(Complex[] result)
+        {
+            this.Result = result;
+        }
+        public Complex[] Result { get; private set; }
+    }
+}