public static double logRootMeanSquare(double[] samples)
{
if (!SpeechClassifier.assertionsDisabled && samples.Length <= 0)
{
throw new AssertionError();
}
double num = (double)0f;
int num2 = samples.Length;
for (int i = 0; i < num2; i++)
{
double num3 = samples[i];
num += num3 * num3;
}
double num4 = Math.sqrt(num / (double)samples.Length);
num4 = Math.max(num4, (double)1f);
return((double)(LogMath.log10((float)num4) * 20f));
}