GetSamplingFrequencyIndex(unsigned int sampling_frequency)
{
    switch (sampling_frequency) {
        case 96000: return 0;
        case 88200: return 1;
        case 64000: return 2;
        case 48000: return 3;
        case 44100: return 4;
        case 32000: return 5;
        case 24000: return 6;
        case 22050: return 7;
        case 16000: return 8;
        case 12000: return 9;
        case 11025: return 10;
        case 8000:  return 11;
        case 7350:  return 12;
        default:    return 0;
    }
}