在C#中实现FftPitchDetector

我已经在我的项目中添加了FftPitchDetector.cs，但我不知道如何使用它。

我的代码：

private void sourceStream_DataAvailable(object sender, NAudio.Wave.WaveInEventArgs e)
        {
            if (waveWriter == null) return;
            byte[] buffer = e.Buffer;
            float sample32 = 0;
            int bytesRecorded = e.BytesRecorded;
            float[] floats = new float[buffer.Length];

            waveWriter.Write(buffer, 0, bytesRecorded);
            for (int index = 0; index < e.BytesRecorded; index += 2)
            {
                short sample = (short)((buffer[index + 1] << 8) |
                                        buffer[index + 0]);
                sample32 = sample / 32768f;
                sampleAggregator.Add(sample32);
            }
            floats = bytesToFloats(buffer);
            FftPitchDetector PitchDetect = new FftPitchDetector(sample32);
            **PitchDetect.DetectPitch(XXXXXX, XXXXXXXXXXX);**
           }
        private static float[] bytesToFloats(byte[] bytes)
        {
            float[] floats = new float[bytes.Length / 2];
            for (int i = 0; i < bytes.Length; i += 2)
            {
                floats[i / 2] = bytes[i] | (bytes[i + 1] << 8);
            }
            return floats;
        }

我应该在PitchDetect.DetectPitch（XXXXXXXXXX，XXXXXXXXXX）中放入哪些参数？？

如何使用FftPitchDetector.cs获取输入频率？

谢谢！