public float ms_per_frame()
{
float[][] ms_per_frame_array = {new float[]{8.707483f, 8.0f, 12.0f}, new float[]{26.12245f, 24.0f, 36.0f}, new float[]{26.12245f, 24.0f, 36.0f}};
return (ms_per_frame_array[h_layer - 1][h_sample_frequency]);
}