fixes #455

filoe · Jul 6, 2021 · 54e4008 · 54e4008
1 parent 13bbebb
commit 54e4008
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Showing 2 changed files with 14 additions and 12 deletions.
diff --git a/CSCore/DSP/PitchShifterInternal.cs b/CSCore/DSP/PitchShifterInternal.cs
@@ -49,17 +49,17 @@ namespace CSCore.DSP
     internal class PitchShifterInternal
     {
         private static readonly int MaxFrameLength = 16000;
-        private static readonly float[] InFifo = new float[MaxFrameLength];
-        private static readonly float[] OutFifo = new float[MaxFrameLength];
-        private static readonly float[] FfTworksp = new float[2 * MaxFrameLength];
-        private static readonly float[] LastPhase = new float[MaxFrameLength / 2 + 1];
-        private static readonly float[] SumPhase = new float[MaxFrameLength / 2 + 1];
-        private static readonly float[] OutputAccum = new float[2 * MaxFrameLength];
-        private static readonly float[] AnaFreq = new float[MaxFrameLength];
-        private static readonly float[] AnaMagn = new float[MaxFrameLength];
-        private static readonly float[] SynFreq = new float[MaxFrameLength];
-        private static readonly float[] SynMagn = new float[MaxFrameLength];
-        private static long _gRover;
+        private readonly float[] InFifo = new float[MaxFrameLength];
+        private readonly float[] OutFifo = new float[MaxFrameLength];
+        private readonly float[] FfTworksp = new float[2 * MaxFrameLength];
+        private readonly float[] LastPhase = new float[MaxFrameLength / 2 + 1];
+        private readonly float[] SumPhase = new float[MaxFrameLength / 2 + 1];
+        private readonly float[] OutputAccum = new float[2 * MaxFrameLength];
+        private readonly float[] AnaFreq = new float[MaxFrameLength];
+        private readonly float[] AnaMagn = new float[MaxFrameLength];
+        private readonly float[] SynFreq = new float[MaxFrameLength];
+        private readonly float[] SynMagn = new float[MaxFrameLength];
+        private long _gRover;
 
         public static void PitchShift(float pitchShift, long numSampsToProcess,
            float sampleRate, float[] indata)

diff --git a/CSCore/Streams/Effects/PitchShifter.cs b/CSCore/Streams/Effects/PitchShifter.cs
@@ -17,6 +17,7 @@ namespace CSCore.Streams.Effects
     /// </remarks>
     public class PitchShifter : SampleAggregatorBase
     {
+        private readonly PitchShifterInternal _pitchShifterInternal;
         /// <summary>
         /// Gets or sets the pitch shift factor.
         /// </summary>
@@ -34,6 +35,7 @@ public class PitchShifter : SampleAggregatorBase
         public PitchShifter(ISampleSource source) : base(source)
         {
             PitchShiftFactor = 1.0f;
+            _pitchShifterInternal = new PitchShifterInternal();
         }
 
         /// <summary>
@@ -62,7 +64,7 @@ public override int Read(float[] buffer, int offset, int count)
                     Buffer.BlockCopy(buffer, offset, pitchBuffer, 0, read);
                 }
 
-                PitchShifterInternal.PitchShift(PitchShiftFactor, read, WaveFormat.SampleRate, buffer);
+                _pitchShifterInternal.PitchShift(PitchShiftFactor, read, WaveFormat.SampleRate, buffer);
 
                 if (offset != 0)
                 {