public VoiceActivityDetectorV2(int sampleRate)
{
this.sampleRate = sampleRate;
samplesInFrame = sampleRate / (1000 / frameSize);
fft = new FFT2();
fft.init((uint)Math.Log(samplesInFrame, 2));
Enabled = true; // default value
}
public void TestFFT()
{
const int SIZE = 512;
var re = new double[SIZE];
var im = new double[SIZE];
for (int i = 0; i < SIZE; i++)
{
re[i] = Math.Sin(2 * Math.PI / SIZE * i);
im[i] = 0;
}
var fft = new FFT2();
var logN = (uint)Math.Log(SIZE, 2);
fft.init(logN);
var expected = new double[SIZE];
Array.Copy(re, expected, re.Length);
fft.run(re, im);
fft.run(re, im, true);
for (int i = 0; i < SIZE; i++)
{
Assert.AreEqual(expected[i], re[i], 0.000000001);
}
}